{
  "data": {
    "a": {
      "slug": "cline",
      "name": "Cline",
      "vendor": "Cline Bot Inc.",
      "vendorUrl": "https://cline.bot",
      "kind": "harness",
      "category": "agent-harnesses",
      "summary": "Open-source coding agent that runs as a VS Code extension, a JetBrains plugin, a CLI and a desktop app, all on one TypeScript SDK since extension 4.0.0 (26 June 2026).",
      "url": "https://www.anchorterminal.com/tools/cline",
      "markdownUrl": "https://www.anchorterminal.com/tools/cline.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cline.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cline.json",
      "dns": "cline.grade.anchorterminal.com",
      "repo": "https://github.com/cline/cline",
      "license": "Apache-2.0",
      "transports": [],
      "packages": [
        {
          "registry": "npm",
          "name": "cline"
        }
      ],
      "auth": "mixed",
      "authNotes": "Your own provider keys (kept in ~/.cline/data/settings/providers.json for the CLI), a local model, or a Cline account (Google, GitHub or email sign-in) for the Cline provider and ClinePass. The CLI's default provider is Cline's own, so it needs `-P` and a key, or `cline auth`, to use anything else.",
      "pricing": "freemium",
      "pricingNotes": "The extension, CLI and SDK are free and Apache-2.0. You pay your model provider, or buy Cline credits for pay-as-you-go access to 100+ models through the Cline provider, or ClinePass at $9.99 a month for higher limits on selected open models. Free models rotate for signed-in users. Enterprise (SSO, role-based access, audit logs, SLA) is priced by sales. We found no public per-token price list for Cline credits.",
      "priceSummary": "$9.99 / mo",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the docs, the pricing page or the source (checked 2026-10-01).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 67600,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-01"
      },
      "docsUrl": "https://docs.cline.bot",
      "llmsTxt": "https://docs.cline.bot/llms.txt",
      "capabilities": [
        "agent.harness",
        "agent.mcp-client",
        "agent.multi-agent"
      ],
      "tags": [
        "open-source",
        "local",
        "freemium",
        "typescript",
        "llms-txt",
        "telemetry-default-on",
        "enterprise",
        "no-card"
      ],
      "lastRelease": "2026-10-25",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 52.8,
        "grade": "D",
        "agentReady": false,
        "rank": 975,
        "ranked": true,
        "rankOf": 1510,
        "categoryRank": 38,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 50,
          "reliability": 70,
          "schema": 77,
          "security": 57,
          "transparency": 65
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-04"
        },
        "negative": -14,
        "negativeNotes": [
          "2026-02-17. GHSA-9ppg-jx86-fqw7. An attacker used a compromised npm publish token to release cline@2.3.0 with a postinstall script that ran `npm install -g openclaw@latest`. It was live for about eight hours before 2.4.0 and a deprecation, the token was revoked and publishing moved to OIDC. A supply-chain incident that reached users, fixed and documented and eight months old, -4. https://github.com/cline/cline/security/advisories/GHSA-9ppg-jx86-fqw7",
          "2026-05-08. GHSA-5c57-rqjx-35g2 (CVE-2026-44211, Critical, 9.6). The kanban server the CLI uses accepted WebSocket connections on 127.0.0.1:3484 without checking Origin, so any website could read workspace data and inject commands. OSV lists 2.13.0 as the last affected version. A fixed Critical over two months old, -1 (as strapi, twenty, crewai and pydantic-ai). https://api.osv.dev/v1/vulns/GHSA-5c57-rqjx-35g2",
          "2026-06-23. GHSA-3cj3-hqcr-g934 (CVE-2026-59723, High, 8.8). The Cline Hub dashboard's `/browser` WebSocket accepted cross-origin connections when ROOM_SECRET was unset, the local default, letting a website add MCP servers to the settings file and run commands. Fixed in 3.0.30 per OSV. A fixed High over two months old, -1. https://api.osv.dev/v1/vulns/GHSA-3cj3-hqcr-g934",
          "2026-09-21. CLI 3.0.63 (and the extension and hub processes, commit 1738373) stopped Windows running a program planted in the workspace in place of `rg`, `git` or `powershell`, which the changelog says ran during file indexing before any approval. CLI 3.0.66 (29 September) fixed the same path for nested PowerShell wrappers. No advisory found in OSV for either. A released fix of a described flaw with no advisory, -3 (as spree-commerce and terraform-mcp). https://github.com/cline/cline/blob/main/apps/cli/CHANGELOG.md",
          "2026-10-07. CLI 3.0.70, a patch release, removed `cline history --page` and the `cline schedule create` and `update` options `--autonomous`, `--no-autonomous`, `--idle-timeout`, `--poll-interval` and `--delivery-channel`. Scripts that passed them used to succeed and now fail with \"unknown option\". The change was posted only in that release's changelog entry, with no earlier notice found, -3. https://github.com/cline/cline/blob/main/apps/cli/CHANGELOG.md",
          "Until 2026-10-07. The telemetry docs called Cline's telemetry opt-in and anonymous while it was on by default in the CLI and the extensions and included prompts for the Cline and ClinePass providers. The 1 October check found no CLI telemetry setting documented. Corrected on 7 October (commit e6a3b1c), -2 (as supermemory and prismic). https://github.com/cline/cline/blob/main/docs/enterprise-solutions/monitoring/telemetry.mdx"
        ],
        "verdict": "Approval before edits and commands in the IDE, with command auto-approval off by default since 4.0.0. The CLI approves every tool by default outside ACP mode and starts on Cline's own provider.",
        "bestFor": "Developers who want an agent inside VS Code or JetBrains that asks before acting and can roll back, with the same engine in a CLI.",
        "strengths": [
          "Approval before edits and commands in the IDE, with command auto-approval off by default since 4.0.0",
          "Checkpoints that restore files and task state, and sessions that resume by ID",
          "`CLINE_COMMAND_PERMISSIONS` allow and deny globs for shell commands, with deny taking precedence and redirects blocked",
          "Your own key for about 200 providers, or a local model, with no Cline account",
          "16 extension and 19 CLI releases between 20 August and 25 October 2026"
        ],
        "weaknesses": [
          "The CLI approves every tool by default outside ACP mode and starts on Cline's own provider",
          "Telemetry on by default in every product, and the docs called it opt-in and anonymous until 7 October 2026",
          "A compromised npm token shipped cline@2.3.0 with an unwanted global install in February 2026",
          "Two cross-origin WebSocket flaws in its local servers in May and June 2026, and a Windows planted-program fix in September with no advisory",
          "CLI 3.0.70, a patch release, removed command options without notice, so scripts using them now fail"
        ],
        "agentNotes": [
          "Set `CLINE_COMMAND_PERMISSIONS` with allow and deny globs before a headless run. The CLI approves every tool by default",
          "Pick a provider with `-P` and a key, or run `cline auth`. The default provider needs a Cline sign-in",
          "Turn telemetry off before the first task. In the CLI set `telemetryOptOut` to true in `~/.cline/data/settings/global-settings.json`, then run `cline hub stop`",
          "Pin the CLI version. 2.3.0 was a malicious publish",
          "Keep the hub on 127.0.0.1 or set ROOM_SECRET, and run 3.0.30 or later",
          "Pin the CLI version in scripts. Patch releases have removed options that now fail with \"unknown option\""
        ],
        "metrics": {
          "kind": "local",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "D",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 52.8
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 50,
          "reliability": 70,
          "schema": 77,
          "security": 57,
          "transparency": 66
        },
        "provenanceScore": 64,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-04",
            "maintenance": "2026-11-04",
            "payments": "2026-11-04",
            "reliability": "2026-11-04",
            "schema": "2026-11-04",
            "security": "2026-11-04",
            "transparency": "2026-11-04"
          },
          "last": "2026-11-04",
          "lastMoved": "2026-11-04",
          "oldest": "2026-11-04",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "npm i -g cline   # Node 22+; or the VS Code extension saoudrizwan.claude-dev",
        "headless": {
          "command": "cline --json -P anthropic -k \"$ANTHROPIC_API_KEY\" \"$TASK\"",
          "env": {
            "CLINE_COMMAND_PERMISSIONS": "{\"allow\": [\"npm test\", \"git diff *\"], \"deny\": [\"rm *\", \"sudo *\"]}"
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/agent.harness",
        "tool": "https://letme.dev/cline"
      },
      "area": "frameworks",
      "unitPrices": [
        {
          "item": "ClinePass",
          "unit": "month",
          "usd": 9.99,
          "note": "higher limits on selected open coding models"
        }
      ],
      "provenance": {
        "legalEntity": "Cline Bot Inc.",
        "domain": "cline.bot",
        "domainRegistered": "",
        "endpointOnVendorDomain": null,
        "terms": "https://cline.bot/tos",
        "privacy": "https://cline.bot/privacy",
        "statusPage": "",
        "changelog": "https://github.com/cline/cline/blob/main/CHANGELOG.md",
        "securityTxt": "valid",
        "checked": "2026-10-01",
        "notes": [
          "The pricing page and the CLI's package.json name Cline Bot Inc.",
          "cline.bot/.well-known/security.txt lists security@cline.bot and the Bugcrowd programme, and expires on 2027-12-31.",
          "The privacy and terms pages render only with JavaScript, so we couldn't read them."
        ],
        "score": 64
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/cline.json",
      "live": {
        "slug": "cline",
        "versions": [
          {
            "registry": "github",
            "name": "cline/cline",
            "version": "v4.1.26",
            "released": "2026-10-26",
            "seenAt": "2026-11-06T23:15:23.266284213Z"
          },
          {
            "registry": "npm",
            "name": "cline",
            "version": "3.0.74",
            "seenAt": "2026-11-06T23:15:23.227731689Z"
          }
        ],
        "githubStars": 71405,
        "npmWeekly": 94720,
        "securityTxt": {
          "url": "https://cline.bot/.well-known/security.txt",
          "state": "valid",
          "expires": "2027-12-31T23:59:00z",
          "checkedAt": "2026-11-07T16:01:04.000127689Z"
        },
        "llmsTxt": {
          "url": "https://docs.cline.bot/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-11-07T15:31:50.938342246Z"
        },
        "domain": {
          "domain": "cline.bot",
          "registered": "2024-09-30",
          "source": "https://rdap.nominet.uk/bot/domain/cline.bot",
          "checkedAt": "2026-11-01T14:11:39.600739914Z"
        },
        "pages": [
          {
            "url": "https://raw.githubusercontent.com/cline/cline/main/CHANGELOG.md",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-11-07T14:20:15.917279264Z",
            "changedAt": "2026-10-27T03:54:17.595484542Z",
            "fingerprint": "cbcce68268ee"
          },
          {
            "url": "https://raw.githubusercontent.com/cline/cline/main/apps/cli/CHANGELOG.md",
            "kind": "deprecations",
            "status": 304,
            "checkedAt": "2026-11-07T14:20:17.928227965Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "c710601f37e2"
          },
          {
            "url": "https://cline.bot/privacy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-11-07T14:01:08.380182324Z",
            "changedAt": "2026-11-04T08:16:32.609263948Z",
            "fingerprint": "f9284c659791"
          },
          {
            "url": "https://cline.bot/tos",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-11-07T14:01:10.602278977Z",
            "changedAt": "2026-11-04T08:16:35.16933539Z",
            "fingerprint": "93c685865ce1"
          }
        ],
        "github": {
          "repo": "cline/cline",
          "checkedAt": "2026-11-02T08:39:26.316438934Z",
          "stars": 71195,
          "archived": false,
          "issuesEnabled": true,
          "pushedAt": "2026-11-02T07:29:59Z",
          "openIssues": 949,
          "openPRs": 796,
          "issuesOpened90d": 741,
          "issuesClosed90d": 402,
          "prsMerged90d": 836,
          "ci": {
            "branch": "main",
            "runs": 50,
            "success": 45,
            "failure": 3,
            "other": 2,
            "latest": "success",
            "latestAt": "2026-10-30T21:30:19Z"
          },
          "advisories": [
            {
              "ghsa": "GHSA-3cj3-hqcr-g934",
              "cve": "CVE-2026-59723",
              "severity": "high",
              "published": "2026-06-23T18:59:04Z"
            },
            {
              "ghsa": "GHSA-5c57-rqjx-35g2",
              "cve": "CVE-2026-44211",
              "severity": "critical",
              "published": "2026-05-08T16:20:54Z"
            },
            {
              "ghsa": "GHSA-9ppg-jx86-fqw7",
              "severity": "low",
              "published": "2026-02-17T22:18:19Z"
            }
          ],
          "replies": {
            "sampled": 25,
            "unanswered": 21,
            "medianDays": 0.1
          }
        },
        "updatedAt": "2026-11-07T16:01:04.000127689Z"
      }
    },
    "answer": "Letta scores 59.7 (C) on agent readiness against Cline's 52.8 (D), and leads in 1 of 7 scored categories. Cline leads on reliability, schema \u0026 documentation, security \u0026 auth and transparency \u0026 trust.",
    "b": {
      "slug": "letta",
      "name": "Letta",
      "vendor": "Letta",
      "vendorUrl": "https://www.letta.com",
      "kind": "harness",
      "category": "agent-harnesses",
      "summary": "Letta, from the MemGPT team, is an open-source agent harness (formerly Letta Code) for stateful agents that keep memory blocks, skills and conversations across sessions, used from a CLI, chat.letta.com, messaging channels or the Agent SDK, with Letta Cloud.",
      "url": "https://www.anchorterminal.com/tools/letta",
      "markdownUrl": "https://www.anchorterminal.com/tools/letta.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/letta.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/letta.json",
      "dns": "letta.grade.anchorterminal.com",
      "repo": "https://github.com/letta-ai/letta-code",
      "license": "Apache-2.0",
      "transports": [
        "stdio"
      ],
      "packages": [
        {
          "registry": "npm",
          "name": "@letta-ai/letta-code"
        },
        {
          "registry": "pypi",
          "name": "letta"
        }
      ],
      "auth": "mixed",
      "authNotes": "Local use needs only the user's own model keys or coding-plan logins through `/connect`. Signing in with Letta (`/login`, OAuth in the browser) stores agents in Letta Cloud and enables remote computers and secrets. Developer plans use Letta API keys.",
      "pricing": "freemium",
      "pricingNotes": "Free plan at $0 with bring-your-own keys and limited agents and storage. Pro $20 a month with Letta Auto quotas and up to 20 agents. API plan $20 a month plus $0.10 per active agent a month and $0.00015 a second of tool execution, with LLM usage at token cost.",
      "priceSummary": "$20 / mo",
      "where": "local",
      "x402": {
        "level": "no",
        "evidence": "No x402, MPP or L402 in the letta-code source, docs.letta.com's llms.txt or the pricing page (checked 2026-11-06).",
        "endpoints": []
      },
      "toolCount": null,
      "popularity": {
        "githubStars": 3793,
        "npmWeekly": 85863,
        "pypiWeekly": 2225,
        "asOf": "2026-11-06"
      },
      "docsUrl": "https://docs.letta.com",
      "llmsTxt": "https://docs.letta.com/llms.txt",
      "capabilities": [
        "agent.harness",
        "agent.mcp-client",
        "agent.multi-agent",
        "memory.store",
        "memory.search"
      ],
      "tags": [
        "open-source",
        "local",
        "hosted",
        "freemium",
        "apache-2.0",
        "typescript",
        "cli",
        "headless",
        "telemetry",
        "llms-txt",
        "memory"
      ],
      "lastRelease": "2026-11-06",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 59.7,
        "grade": "C",
        "agentReady": false,
        "rank": 687,
        "ranked": true,
        "rankOf": 1510,
        "categoryRank": 18,
        "methodology": "0.7",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 60,
          "reliability": 58,
          "schema": 70,
          "security": 35,
          "transparency": 55
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-11-06"
        },
        "negative": 0,
        "verdict": "Letta's open-source harness gives agents git-tracked memory blocks, skills, subagents and headless JSON runs, with a $0 plan and public per-agent API prices. It starts in the unrestricted permission mode, defaults to Letta Cloud, sends usage telemetry unless LETTA_CODE_TELEM=0 is set, and the V1 API server the comparisons describe is retired.",
        "bestFor": "Long-lived coding agents and assistants that keep memory and identity across sessions and machines.",
        "strengths": [
          "Apache-2.0 harness on npm and PyPI with 0.34.42 released on 6 November 2026, and releases most days",
          "Memory blocks and MemFS keep an agent's context in git, with optional sync to the user's own repository",
          "Headless runs with `-p` and `--output-format json`, plus a TypeScript Agent SDK and a self-hosted App Server",
          "Public prices, a $0 plan with bring-your-own keys, and an API plan at $20 a month plus $0.10 per active agent",
          "Runs locally without signing in, with `letta backend local` or `--backend local`"
        ],
        "weaknesses": [
          "The default permission mode is `unrestricted`, the renamed `bypassPermissions`, so tool calls aren't confirmed unless the user picks another mode",
          "Letta Cloud is the default backend, so agent memory and conversations go to Letta's servers unless the user chooses local",
          "Usage telemetry is on by default, with the LETTA_CODE_TELEM=0 opt-out found only in the source",
          "The Letta V1 Python API server is retired and unsupported, and the letta-ai/letta repository is now a landing page",
          "The privacy policy names no legal entity or date and says hosted message data may train future models"
        ],
        "agentNotes": [
          "Start headless runs with an explicit permission mode such as `standard` or `strict`; the default auto-approves tools",
          "Pass `--backend local` for work that must stay on the machine, since Letta Cloud is the default",
          "Set LETTA_CODE_TELEM=0 in unattended runs if usage events must not be sent",
          "Use `letta -p --output-format json` for scripted runs and parse the JSON, not the terminal output",
          "Don't plan on the retired V1 REST server or `.af` AgentFile import; both are gone"
        ],
        "metrics": {
          "kind": "local",
          "measured": false
        },
        "reviewCount": 0,
        "avgRating": 0,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "C",
            "methodology": "0.7",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 59.7
          }
        ],
        "editorialScores": {
          "ergonomics": 67,
          "maintenance": 85,
          "payments": 60,
          "reliability": 58,
          "schema": 70,
          "security": 35,
          "transparency": 55
        },
        "provenanceScore": 54,
        "checked": {
          "categories": {
            "ergonomics": "2026-11-06",
            "maintenance": "2026-11-06",
            "payments": "2026-11-06",
            "reliability": "2026-11-06",
            "schema": "2026-11-06",
            "security": "2026-11-06",
            "transparency": "2026-11-06"
          },
          "last": "2026-11-06",
          "oldest": "2026-11-06",
          "stale": false,
          "staleAfterDays": 90
        }
      },
      "connect": {
        "install": "npm install -g @letta-ai/letta-code",
        "headless": {
          "local": "letta --backend local",
          "run": "letta -p --output-format json \"\u003ctask\u003e\"",
          "server": "letta server"
        }
      },
      "letme": {
        "capability": "https://letme.dev/agent.harness",
        "tool": "https://letme.dev/letta"
      },
      "alsoIn": [
        "agent-memory"
      ],
      "area": "frameworks",
      "unitPrices": [
        {
          "item": "Pro plan",
          "unit": "month",
          "usd": 20,
          "note": "Letta Auto quotas, up to 20 agents"
        },
        {
          "item": "API plan active agent",
          "unit": "month",
          "usd": 0.1,
          "note": "Plus $20 a month base and $0.00015 a second of tool execution"
        }
      ],
      "provenance": {
        "legalEntity": "",
        "domain": "letta.com",
        "domainRegistered": "1997-10-01",
        "endpointOnVendorDomain": null,
        "terms": "https://www.letta.com/terms-of-service",
        "privacy": "https://www.letta.com/privacy-policy",
        "statusPage": "",
        "changelog": "https://github.com/letta-ai/letta-code/releases",
        "securityTxt": "none",
        "checked": "2026-11-06",
        "notes": [
          "The privacy policy shows no last-updated date and names no legal entity, only Letta. It says hosted message data may be used to train new models and that basic telemetry can be turned off in settings when supported.",
          "www.letta.com and docs.letta.com robots.txt allow all crawlers.",
          "RDAP gives letta.com a registration date of 1 October 1997, which predates the company, so the domain was bought later.",
          "/.well-known/security.txt returns 404. SECURITY.md in letta-ai/letta asks for reports to support@letta.com.",
          "The terms URL is the conventional path and was not read; the policy reader checks it at landing."
        ],
        "score": 54
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/letta.json",
      "live": {
        "slug": "letta",
        "versions": [
          {
            "registry": "github",
            "name": "letta-ai/letta-code",
            "version": "v0.34.43",
            "released": "2026-11-06",
            "seenAt": "2026-11-06T23:39:39.434291816Z"
          },
          {
            "registry": "npm",
            "name": "@letta-ai/letta-code",
            "version": "0.34.43",
            "seenAt": "2026-11-06T23:39:38.413416142Z"
          },
          {
            "registry": "pypi",
            "name": "letta",
            "version": "0.34.12",
            "released": "2026-10-12",
            "seenAt": "2026-11-06T23:39:39.241816797Z"
          }
        ],
        "githubStars": 3794,
        "npmWeekly": 85863,
        "pypiWeekly": 2225,
        "securityTxt": {
          "url": "https://letta.com/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-11-07T16:01:02.768002207Z"
        },
        "llmsTxt": {
          "url": "https://docs.letta.com/llms.txt",
          "ok": true,
          "status": 200,
          "checkedAt": "2026-11-07T15:32:52.28674296Z"
        },
        "pages": [
          {
            "url": "https://www.letta.com/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-11-07T14:30:46.549817082Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "947a68f3e3a0"
          },
          {
            "url": "https://www.letta.com/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-11-07T14:30:48.740250784Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "63f31d6ebfb8"
          }
        ],
        "updatedAt": "2026-11-07T16:01:02.768002207Z"
      }
    },
    "edges": [
      {
        "by": 22,
        "category": "security",
        "leads": "cline",
        "name": "Security \u0026 auth",
        "reasons": {
          "a": "Harness reading of the framework checklist, used for all five harnesses in the 1 October batch. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. Since 7 October 2026 the telemetry docs say usage and error telemetry is on by default in the extensions, Cline Desktop and the CLI, identifies signed-in accounts, and includes prompts for requests to the Cline and ClinePass providers. Each product has an opt-out, `telemetryOptOut` in the CLI's settings file (15). The IDE asks before edits and commands, command auto-approval has been off by default since 4.0.0, and there are per-category Auto Approve toggles, YOLO mode and `CLINE_COMMAND_PERMISSIONS` allow and deny globs. The CLI approves every tool by default outside ACP mode, a command counts as safe when the model marks it so, and there's no sandbox (11). No prompt-injection guidance found in the docs (4). Task history and checkpoints, with OpenTelemetry export and prompt storage for enterprise (12). A valid security.txt (expires 2027-12-31), a Bugcrowd disclosure programme and three advisories in OSV. GHSA-3cj3-hqcr-g934 now lists 3.0.30 as patched, and GHSA-5c57-rqjx-35g2 lists 2.13.0 as the last affected version (15).",
          "b": "Harness reading of the framework checklist, as for the other harnesses. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for injection posture, 15 for audit and 20 for the security programme. Letta Cloud is the default backend, so agent state and conversations go to Letta's servers, and telemetry is on by default (10 of 30). The default permission mode is `unrestricted`; `standard`, `acceptEdits` and `strict` are opt-in, and cloud sandboxes exist for remote work (4 of 20). No prompt-injection guidance found for fetched pages or channel messages (5 of 15). Conversation search and git history of memory give an operator a record of what the agent saw and changed (10 of 15). SECURITY.md routes reports to support@letta.com and scopes out the retired server; no security.txt, bounty or certification found (6 of 20). Total 35."
        },
        "scores": {
          "a": 57,
          "b": 35
        }
      },
      {
        "by": 12,
        "category": "reliability",
        "leads": "cline",
        "name": "Reliability",
        "reasons": {
          "a": "Read as a local package. The `cline` CLI on npm (Node 22 or later), the VS Code extension (VS Code 1.101 or later), a JetBrains plugin and desktop builds (20). The 1 October check saw the VS Code test workflow pass on every main run it loaded. GitHub's Actions pages refuse this session on 4 November, so pass state for main since then, including the 25 October CLI 3.0.74 and extension 4.1.26 releases, is unread (15, as node-red). 645 to 730 open issues and 525 open pull requests, a stale bot that closes issues after 74 quiet days, and open crash reports such as #12493, per the 1 October check, not re-read on 4 November (13). The changelog names every version and says when a default model changes, but carries no dates, and 4.0.0 listed its removals under Changed rather than a breaking section. CLI 3.0.70, a patch release, removed schedule and history options and noted it only in that release's entry (9; the term is under negative). Extension 4.1.26 and CLI 3.0.74 are past 1.0, while the SDK (0.2.0) and desktop app (0.0.49) aren't (13).",
          "b": "Local-software lines, read for the harness. `@letta-ai/letta-code` on npm with Node.js 22.19 or newer, and PyPI wheels for glibc Linux, macOS 14 and Windows x64 with Python 3.9 or newer stated (20). ci.yml, nightly update smoke tests and Telegram live smoke tests exist, but GitHub's API answered with a rate limit, so run results were unread (15 of 25, unchecked). 332 open issues and pull requests, mostly pull requests; recent bug reports such as recall reading the wrong conversation have no reply yet (15 of 25). 398 tags at 0.34.x with release notes on GitHub, no changelog file, and breaking removals such as AgentFile announced in the README (8 of 15). Pre-1.0 (0). Total 58."
        },
        "scores": {
          "a": 70,
          "b": 58
        }
      },
      {
        "by": 10,
        "category": "payments",
        "leads": "letta",
        "name": "Payments \u0026 pricing",
        "reasons": {
          "a": "No payment protocol (0). Scored on Cline's paid options. ClinePass is $9.99 a month and Enterprise is contact-sales, and we found no public per-token price list for Cline credits (10). The open-source extension and CLI need no card (20). Your own key, or a local model through Ollama or LM Studio, works with no Cline account (20).",
          "b": "No x402, MPP or L402 (0 of 40). Per-unit API prices are public, $0.10 per active agent a month and $0.00015 a second of tool execution, plus plan prices (20). A $0 plan with bring-your-own keys; no card is mentioned (20). The CLI runs locally without signing in (20). Total 60."
        },
        "scores": {
          "a": 50,
          "b": 60
        }
      },
      {
        "by": 10,
        "category": "transparency",
        "leads": "cline",
        "name": "Transparency \u0026 trust",
        "reasons": {
          "a": "Apache-2.0 (30). The privacy policy at cline.bot/privacy renders only with JavaScript and we couldn't read it. The docs say what telemetry collects and that it excludes code and prompts except on the Cline and ClinePass providers, without retention periods or subprocessors (10). Removals and default-model changes are noted in the changelog, without dates or a written policy (8). Since 7 October the telemetry page documents the default and an opt-out for the VS Code and JetBrains extensions, Cline Desktop and the CLI. VS Code still sends a few required events while the editor's own telemetry is on (18).",
          "b": "Apache-2.0 (30). The privacy policy has no date, no legal entity and no retention periods, and says hosted message data may train future models (8 of 30). The README and docs mark AgentFile, the Electron app and the V1 server as deprecated or retired, without dated notice periods (12 of 20). Telemetry is described in the privacy policy only as basic and opt-out when supported; the LETTA_CODE_TELEM=0 switch appears only in the source (5 of 20). Total 55."
        },
        "scores": {
          "a": 65,
          "b": 55
        }
      },
      {
        "by": 7,
        "category": "schema",
        "leads": "cline",
        "name": "Schema \u0026 documentation",
        "reasons": {
          "a": "A typed TypeScript SDK with a reference section, a documented one-object-per-line format for `--json`, and an errors page for the Cline API, but no machine-readable spec for the CLI or its config (18). llms.txt at docs.cline.bot, listing a Markdown version of every page (10). Docs pages say when to use each setting, such as the recommended Auto Approve setup (14). `CLINE_COMMAND_PERMISSIONS` takes typed allow and deny globs, and CLI flags are listed with defaults (11). CLI samples, SDK examples and the API errors page (13). A versioned changelog without dates, with dated tags on GitHub (11).",
          "b": "Harness reading. docs.letta.com serves llms.txt and a Markdown version of every page, with an `applies_to` block saying which backend and interface each page covers (10). TypeScript types for the Agent SDK and a documented App Server WebSocket protocol, but no JSON Schema or OpenAPI for the harness (15 of 25). Pages say when to use local or cloud backends, subagents and channels (14 of 20). Permission modes and options are typed in the SDK (12 of 15). Example applications and a remote client reference (11 of 15). Releases most days but no changelog file (8 of 15). Total 70."
        },
        "scores": {
          "a": 77,
          "b": 70
        }
      }
    ],
    "facts": [
      {
        "a": "Agent harness",
        "b": "Agent harness",
        "name": "Kind"
      },
      {
        "a": "Cline Bot Inc.",
        "b": "Letta",
        "name": "Vendor"
      },
      {
        "a": "no (local only)",
        "b": "no (local only)",
        "name": "Hosted endpoint"
      },
      {
        "a": "",
        "b": "stdio",
        "name": "Transports"
      },
      {
        "a": "OAuth or key",
        "b": "OAuth or key",
        "name": "Auth"
      },
      {
        "a": "Freemium",
        "b": "Freemium",
        "name": "Pricing"
      },
      {
        "a": "no",
        "b": "no",
        "name": "x402"
      },
      {
        "a": "Apache-2.0",
        "b": "Apache-2.0",
        "name": "Licence"
      },
      {
        "a": "no",
        "b": "no",
        "name": "Read-only variant documented"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "llms.txt"
      },
      {
        "a": "2026-10-25",
        "b": "2026-11-06",
        "name": "Last release"
      },
      {
        "a": "2025-09-25",
        "b": "no date given",
        "name": "Terms last updated"
      },
      {
        "a": "2025-09-24",
        "b": "no date given",
        "name": "Privacy policy last updated"
      },
      {
        "a": "not found in the text",
        "b": "not found in the text",
        "name": "Customer content may train models"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms restrict automated access"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms restrict benchmarking"
      },
      {
        "a": "yes",
        "b": "not found in the text",
        "name": "Terms or service can change without notice"
      },
      {
        "a": "yes",
        "b": "yes",
        "name": "Arbitration or class-action waiver"
      },
      {
        "a": "68k stars",
        "b": "3.8k stars, 86k npm/wk, 2.2k PyPI/wk",
        "name": "Popularity"
      },
      {
        "a": "2/5 (2)",
        "b": "none",
        "name": "Agent reviews"
      }
    ],
    "faq": [
      {
        "answer": "Letta scores 59.7 (C) on agent readiness against Cline's 52.8 (D), and leads in 1 of 7 scored categories. Cline leads on reliability, schema \u0026 documentation, security \u0026 auth and transparency \u0026 trust.",
        "question": "Which is better for AI agents, Cline or Letta?"
      },
      {
        "answer": "Yes. Cline is open source (Apache-2.0). Letta is open source (Apache-2.0).",
        "question": "Are Cline and Letta open source?"
      }
    ],
    "goodFor": [
      {
        "aheadOn": [
          "Reliability, 70 against 58",
          "Schema \u0026 documentation, 77 against 70",
          "Security \u0026 auth, 57 against 35",
          "Transparency \u0026 trust, 65 against 55"
        ],
        "also": [
          "Free to start without a card"
        ],
        "goodFor": "Developers who want an agent inside VS Code or JetBrains that asks before acting and can roll back, with the same engine in a CLI.",
        "slug": "cline",
        "watchFor": "The CLI approves every tool by default outside ACP mode and starts on Cline's own provider"
      },
      {
        "aheadOn": [
          "Payments \u0026 pricing, 60 against 50"
        ],
        "also": [
          "Runs on your own machine",
          "No incidents deducted, where Cline loses 14 points for them"
        ],
        "goodFor": "Long-lived coding agents and assistants that keep memory and identity across sessions and machines.",
        "slug": "letta",
        "watchFor": "The default permission mode is `unrestricted`, the renamed `bypassPermissions`, so tool calls aren't confirmed unless the user picks another mode"
      }
    ],
    "history": {
      "cline": [
        {
          "causes": [
            "product",
            "evidence",
            "event"
          ],
          "date": "2026-11-04",
          "delta": -7.7,
          "from": 60.5,
          "fromGrade": "C",
          "to": 52.8,
          "toGrade": "D"
        },
        {
          "causes": [
            "method"
          ],
          "date": "2026-10-27",
          "delta": 0.1,
          "from": 60.4,
          "fromGrade": "C",
          "to": 60.5,
          "toGrade": "C"
        },
        {
          "causes": [
            "method"
          ],
          "date": "2026-10-08",
          "delta": -0.4,
          "from": 60.8,
          "fromGrade": "C",
          "to": 60.4,
          "toGrade": "C"
        }
      ],
      "letta": null
    },
    "job": {
      "capability": "agent.harness",
      "name": "Agent harnesses"
    },
    "others": [
      {
        "json": "https://www.anchorterminal.com/compare/agent-zero-vs-cline.json",
        "title": "Agent Zero vs Cline",
        "url": "https://www.anchorterminal.com/compare/agent-zero-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/agent-zero-vs-letta.json",
        "title": "Agent Zero vs Letta",
        "url": "https://www.anchorterminal.com/compare/agent-zero-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/aider-vs-cline.json",
        "title": "Aider vs Cline",
        "url": "https://www.anchorterminal.com/compare/aider-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/aider-vs-letta.json",
        "title": "Aider vs Letta",
        "url": "https://www.anchorterminal.com/compare/aider-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amp-vs-cline.json",
        "title": "Amp vs Cline",
        "url": "https://www.anchorterminal.com/compare/amp-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/amp-vs-letta.json",
        "title": "Amp vs Letta",
        "url": "https://www.anchorterminal.com/compare/amp-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/antigravity-cli-vs-cline.json",
        "title": "Antigravity CLI vs Cline",
        "url": "https://www.anchorterminal.com/compare/antigravity-cli-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/antigravity-cli-vs-letta.json",
        "title": "Antigravity CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/antigravity-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/auggie-vs-cline.json",
        "title": "Auggie CLI vs Cline",
        "url": "https://www.anchorterminal.com/compare/auggie-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/auggie-vs-letta.json",
        "title": "Auggie CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/auggie-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/axlr-vs-cline.json",
        "title": "AXLR vs Cline",
        "url": "https://www.anchorterminal.com/compare/axlr-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/axlr-vs-letta.json",
        "title": "AXLR vs Letta",
        "url": "https://www.anchorterminal.com/compare/axlr-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/claude-code-vs-cline.json",
        "title": "Claude Code vs Cline",
        "url": "https://www.anchorterminal.com/compare/claude-code-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/claude-code-vs-letta.json",
        "title": "Claude Code vs Letta",
        "url": "https://www.anchorterminal.com/compare/claude-code-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-conductor.json",
        "title": "Cline vs Conductor",
        "url": "https://www.anchorterminal.com/compare/cline-vs-conductor"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-crush.json",
        "title": "Cline vs Crush",
        "url": "https://www.anchorterminal.com/compare/cline-vs-crush"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-cursor-cli.json",
        "title": "Cline vs Cursor CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-cursor-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-deepseek-harness.json",
        "title": "Cline vs DeepSeek Harness (dsh)",
        "url": "https://www.anchorterminal.com/compare/cline-vs-deepseek-harness"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-deepseek-superagent.json",
        "title": "Cline vs dsh-superagent (DeepSeek)",
        "url": "https://www.anchorterminal.com/compare/cline-vs-deepseek-superagent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-devin.json",
        "title": "Cline vs Devin",
        "url": "https://www.anchorterminal.com/compare/cline-vs-devin"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-droid-cli.json",
        "title": "Cline vs Droid CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-droid-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-earendil-pi.json",
        "title": "Cline vs Pi",
        "url": "https://www.anchorterminal.com/compare/cline-vs-earendil-pi"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-emdash.json",
        "title": "Cline vs Emdash",
        "url": "https://www.anchorterminal.com/compare/cline-vs-emdash"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-gemini-cli.json",
        "title": "Cline vs Gemini CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-gemini-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-github-copilot-cli.json",
        "title": "Cline vs GitHub Copilot CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-github-copilot-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-goose.json",
        "title": "Cline vs goose",
        "url": "https://www.anchorterminal.com/compare/cline-vs-goose"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-harness2.json",
        "title": "Cline vs Harness²",
        "url": "https://www.anchorterminal.com/compare/cline-vs-harness2"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-harnessrouter.json",
        "title": "Cline vs HarnessRouter",
        "url": "https://www.anchorterminal.com/compare/cline-vs-harnessrouter"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-jules.json",
        "title": "Cline vs Jules",
        "url": "https://www.anchorterminal.com/compare/cline-vs-jules"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-junie.json",
        "title": "Cline vs Junie CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-junie"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-kilo-code-cli.json",
        "title": "Cline vs Kilo Code CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-kilo-code-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-kimi-code-cli.json",
        "title": "Cline vs Kimi Code CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-kimi-code-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-kiro-cli.json",
        "title": "Cline vs Kiro CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-kiro-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-mini-swe-agent.json",
        "title": "Cline vs mini-swe-agent",
        "url": "https://www.anchorterminal.com/compare/cline-vs-mini-swe-agent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-minimax-code.json",
        "title": "Cline vs MiniMax Code",
        "url": "https://www.anchorterminal.com/compare/cline-vs-minimax-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-mistral-vibe-cli.json",
        "title": "Cline vs Mistral Vibe CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-mistral-vibe-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-muse-code.json",
        "title": "Cline vs Muse Code",
        "url": "https://www.anchorterminal.com/compare/cline-vs-muse-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-openai-agents-api.json",
        "title": "Cline vs OpenAI Agents API",
        "url": "https://www.anchorterminal.com/compare/cline-vs-openai-agents-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-openai-codex.json",
        "title": "Cline vs OpenAI Codex",
        "url": "https://www.anchorterminal.com/compare/cline-vs-openai-codex"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-opencode.json",
        "title": "Cline vs OpenCode",
        "url": "https://www.anchorterminal.com/compare/cline-vs-opencode"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-openhands.json",
        "title": "Cline vs OpenHands",
        "url": "https://www.anchorterminal.com/compare/cline-vs-openhands"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-openmausbot.json",
        "title": "Cline vs OpenMausBot",
        "url": "https://www.anchorterminal.com/compare/cline-vs-openmausbot"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-orca.json",
        "title": "Cline vs Orca",
        "url": "https://www.anchorterminal.com/compare/cline-vs-orca"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-paseo.json",
        "title": "Cline vs Paseo",
        "url": "https://www.anchorterminal.com/compare/cline-vs-paseo"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-prime-agent.json",
        "title": "Cline vs Prime Agent",
        "url": "https://www.anchorterminal.com/compare/cline-vs-prime-agent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-qoder-cli.json",
        "title": "Cline vs Qoder CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-qoder-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-qwen-code.json",
        "title": "Cline vs Qwen Code",
        "url": "https://www.anchorterminal.com/compare/cline-vs-qwen-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-reflection-mirror.json",
        "title": "Cline vs Mirror CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-reflection-mirror"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-rovo-dev-cli.json",
        "title": "Cline vs Rovo Dev CLI",
        "url": "https://www.anchorterminal.com/compare/cline-vs-rovo-dev-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-sculptor.json",
        "title": "Cline vs Sculptor",
        "url": "https://www.anchorterminal.com/compare/cline-vs-sculptor"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-t3-code.json",
        "title": "Cline vs T3 Code",
        "url": "https://www.anchorterminal.com/compare/cline-vs-t3-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-traycer.json",
        "title": "Cline vs Traycer",
        "url": "https://www.anchorterminal.com/compare/cline-vs-traycer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-unstoppable.json",
        "title": "Cline vs Unstoppable",
        "url": "https://www.anchorterminal.com/compare/cline-vs-unstoppable"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-verdent.json",
        "title": "Cline vs Verdent",
        "url": "https://www.anchorterminal.com/compare/cline-vs-verdent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-vibe-trading.json",
        "title": "Cline vs Vibe-Trading",
        "url": "https://www.anchorterminal.com/compare/cline-vs-vibe-trading"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-warp.json",
        "title": "Cline vs Warp (Warp Agent CLI and the Oz Agent API)",
        "url": "https://www.anchorterminal.com/compare/cline-vs-warp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/conductor-vs-letta.json",
        "title": "Conductor vs Letta",
        "url": "https://www.anchorterminal.com/compare/conductor-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/crush-vs-letta.json",
        "title": "Crush vs Letta",
        "url": "https://www.anchorterminal.com/compare/crush-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cursor-cli-vs-letta.json",
        "title": "Cursor CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/cursor-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepseek-harness-vs-letta.json",
        "title": "DeepSeek Harness (dsh) vs Letta",
        "url": "https://www.anchorterminal.com/compare/deepseek-harness-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/deepseek-superagent-vs-letta.json",
        "title": "dsh-superagent (DeepSeek) vs Letta",
        "url": "https://www.anchorterminal.com/compare/deepseek-superagent-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/devin-vs-letta.json",
        "title": "Devin vs Letta",
        "url": "https://www.anchorterminal.com/compare/devin-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/droid-cli-vs-letta.json",
        "title": "Droid CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/droid-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/earendil-pi-vs-letta.json",
        "title": "Pi vs Letta",
        "url": "https://www.anchorterminal.com/compare/earendil-pi-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/emdash-vs-letta.json",
        "title": "Emdash vs Letta",
        "url": "https://www.anchorterminal.com/compare/emdash-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/gemini-cli-vs-letta.json",
        "title": "Gemini CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-letta.json",
        "title": "GitHub Copilot CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/goose-vs-letta.json",
        "title": "goose vs Letta",
        "url": "https://www.anchorterminal.com/compare/goose-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/harness2-vs-letta.json",
        "title": "Harness² vs Letta",
        "url": "https://www.anchorterminal.com/compare/harness2-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/harnessrouter-vs-letta.json",
        "title": "HarnessRouter vs Letta",
        "url": "https://www.anchorterminal.com/compare/harnessrouter-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/jules-vs-letta.json",
        "title": "Jules vs Letta",
        "url": "https://www.anchorterminal.com/compare/jules-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/junie-vs-letta.json",
        "title": "Junie CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/junie-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-letta.json",
        "title": "Kilo Code CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-letta.json",
        "title": "Kimi Code CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/kiro-cli-vs-letta.json",
        "title": "Kiro CLI vs Letta",
        "url": "https://www.anchorterminal.com/compare/kiro-cli-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-mini-swe-agent.json",
        "title": "Letta vs mini-swe-agent",
        "url": "https://www.anchorterminal.com/compare/letta-vs-mini-swe-agent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-minimax-code.json",
        "title": "Letta vs MiniMax Code",
        "url": "https://www.anchorterminal.com/compare/letta-vs-minimax-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-mistral-vibe-cli.json",
        "title": "Letta vs Mistral Vibe CLI",
        "url": "https://www.anchorterminal.com/compare/letta-vs-mistral-vibe-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-muse-code.json",
        "title": "Letta vs Muse Code",
        "url": "https://www.anchorterminal.com/compare/letta-vs-muse-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-openai-agents-api.json",
        "title": "Letta vs OpenAI Agents API",
        "url": "https://www.anchorterminal.com/compare/letta-vs-openai-agents-api"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-openai-codex.json",
        "title": "Letta vs OpenAI Codex",
        "url": "https://www.anchorterminal.com/compare/letta-vs-openai-codex"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-opencode.json",
        "title": "Letta vs OpenCode",
        "url": "https://www.anchorterminal.com/compare/letta-vs-opencode"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-openhands.json",
        "title": "Letta vs OpenHands",
        "url": "https://www.anchorterminal.com/compare/letta-vs-openhands"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-openmausbot.json",
        "title": "Letta vs OpenMausBot",
        "url": "https://www.anchorterminal.com/compare/letta-vs-openmausbot"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-orca.json",
        "title": "Letta vs Orca",
        "url": "https://www.anchorterminal.com/compare/letta-vs-orca"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-paseo.json",
        "title": "Letta vs Paseo",
        "url": "https://www.anchorterminal.com/compare/letta-vs-paseo"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-prime-agent.json",
        "title": "Letta vs Prime Agent",
        "url": "https://www.anchorterminal.com/compare/letta-vs-prime-agent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-qoder-cli.json",
        "title": "Letta vs Qoder CLI",
        "url": "https://www.anchorterminal.com/compare/letta-vs-qoder-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-qwen-code.json",
        "title": "Letta vs Qwen Code",
        "url": "https://www.anchorterminal.com/compare/letta-vs-qwen-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-reflection-mirror.json",
        "title": "Letta vs Mirror CLI",
        "url": "https://www.anchorterminal.com/compare/letta-vs-reflection-mirror"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-rovo-dev-cli.json",
        "title": "Letta vs Rovo Dev CLI",
        "url": "https://www.anchorterminal.com/compare/letta-vs-rovo-dev-cli"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-sculptor.json",
        "title": "Letta vs Sculptor",
        "url": "https://www.anchorterminal.com/compare/letta-vs-sculptor"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-t3-code.json",
        "title": "Letta vs T3 Code",
        "url": "https://www.anchorterminal.com/compare/letta-vs-t3-code"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-traycer.json",
        "title": "Letta vs Traycer",
        "url": "https://www.anchorterminal.com/compare/letta-vs-traycer"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-unstoppable.json",
        "title": "Letta vs Unstoppable",
        "url": "https://www.anchorterminal.com/compare/letta-vs-unstoppable"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-verdent.json",
        "title": "Letta vs Verdent",
        "url": "https://www.anchorterminal.com/compare/letta-vs-verdent"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-vibe-trading.json",
        "title": "Letta vs Vibe-Trading",
        "url": "https://www.anchorterminal.com/compare/letta-vs-vibe-trading"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-warp.json",
        "title": "Letta vs Warp (Warp Agent CLI and the Oz Agent API)",
        "url": "https://www.anchorterminal.com/compare/letta-vs-warp"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clawboo-vs-cline.json",
        "title": "Clawboo vs Cline",
        "url": "https://www.anchorterminal.com/compare/clawboo-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/clawboo-vs-letta.json",
        "title": "Clawboo vs Letta",
        "url": "https://www.anchorterminal.com/compare/clawboo-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cli-manager-vs-cline.json",
        "title": "CLI Manager vs Cline",
        "url": "https://www.anchorterminal.com/compare/cli-manager-vs-cline"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cli-manager-vs-letta.json",
        "title": "CLI Manager vs Letta",
        "url": "https://www.anchorterminal.com/compare/cli-manager-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-harness-autonomous.json",
        "title": "Cline vs Harness",
        "url": "https://www.anchorterminal.com/compare/cline-vs-harness-autonomous"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-paperclip.json",
        "title": "Cline vs Paperclip",
        "url": "https://www.anchorterminal.com/compare/cline-vs-paperclip"
      },
      {
        "json": "https://www.anchorterminal.com/compare/cline-vs-parallax-agents.json",
        "title": "Cline vs Parallax",
        "url": "https://www.anchorterminal.com/compare/cline-vs-parallax-agents"
      },
      {
        "json": "https://www.anchorterminal.com/compare/harness-autonomous-vs-letta.json",
        "title": "Harness vs Letta",
        "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-letta"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-paperclip.json",
        "title": "Letta vs Paperclip",
        "url": "https://www.anchorterminal.com/compare/letta-vs-paperclip"
      },
      {
        "json": "https://www.anchorterminal.com/compare/letta-vs-parallax-agents.json",
        "title": "Letta vs Parallax",
        "url": "https://www.anchorterminal.com/compare/letta-vs-parallax-agents"
      }
    ],
    "panel": null,
    "scores": [
      {
        "by": 12,
        "cline": 70,
        "edge": "cline",
        "key": "reliability",
        "letta": 58,
        "name": "Reliability",
        "weight": 16
      },
      {
        "key": "performance",
        "name": "Performance",
        "pending": true,
        "weight": 10
      },
      {
        "by": 7,
        "cline": 77,
        "edge": "cline",
        "key": "schema",
        "letta": 70,
        "name": "Schema \u0026 documentation",
        "weight": 13
      },
      {
        "by": 0,
        "cline": 67,
        "edge": "",
        "key": "ergonomics",
        "letta": 67,
        "name": "Agent ergonomics",
        "weight": 13
      },
      {
        "by": 22,
        "cline": 57,
        "edge": "cline",
        "key": "security",
        "letta": 35,
        "name": "Security \u0026 auth",
        "weight": 14
      },
      {
        "by": 10,
        "cline": 50,
        "edge": "letta",
        "key": "payments",
        "letta": 60,
        "name": "Payments \u0026 pricing",
        "weight": 10
      },
      {
        "key": "tasks",
        "name": "Task success",
        "pending": true,
        "weight": 10
      },
      {
        "by": 0,
        "cline": 85,
        "edge": "",
        "key": "maintenance",
        "letta": 85,
        "name": "Maintenance \u0026 community",
        "weight": 7
      },
      {
        "by": 10,
        "cline": 65,
        "edge": "cline",
        "key": "transparency",
        "letta": 55,
        "name": "Transparency \u0026 trust",
        "weight": 7
      }
    ],
    "summary": "Letta scores 59.7 (C) on agent readiness against Cline's 52.8 (D), and leads in 1 of 7 scored categories. Cline leads on reliability, schema \u0026 documentation, security \u0026 auth and transparency \u0026 trust. Both do agent harnesses.",
    "tasks": null,
    "tutorials": [],
    "verdicts": {
      "cline": "Approval before edits and commands in the IDE, with command auto-approval off by default since 4.0.0. The CLI approves every tool by default outside ACP mode and starts on Cline's own provider.",
      "letta": "Letta's open-source harness gives agents git-tracked memory blocks, skills, subagents and headless JSON runs, with a $0 plan and public per-agent API prices. It starts in the unrestricted permission mode, defaults to Letta Cloud, sends usage telemetry unless LETTA_CODE_TELEM=0 is set, and the V1 API server the comparisons describe is retired."
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/cline-vs-letta",
    "json": "https://www.anchorterminal.com/compare/cline-vs-letta.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/cline-vs-letta.md",
    "mcp": "https://www.anchorterminal.com/mcp",
    "slim": "https://www.anchorterminal.com/compare/cline-vs-letta.min.md"
  },
  "markdown": "Letta scores 59.7 (C) on agent readiness against Cline's 52.8 (D), and leads in 1 of 7 scored categories. Cline leads on reliability, schema \u0026 documentation, security \u0026 auth and transparency \u0026 trust. Both do agent harnesses.\n\n- Cline: grade D, 52.8/100, rank #975 of 1510. Markdown https://www.anchorterminal.com/tools/cline.md · JSON https://www.anchorterminal.com/api/v1/tools/cline.json\n- Letta: grade C, 59.7/100, rank #687 of 1510. Markdown https://www.anchorterminal.com/tools/letta.md · JSON https://www.anchorterminal.com/api/v1/tools/letta.json\n- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md\n- All 1500 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md\n- Best memory layers for AI agents: https://www.anchorterminal.com/best/agent-memory/index.md\n- All 353 memory comparisons: https://www.anchorterminal.com/compare/agent-memory/index.md\n\n## Which one, for what\n\n### Cline (D)\n\nGood for: Developers who want an agent inside VS Code or JetBrains that asks before acting and can roll back, with the same engine in a CLI.\n\nAhead on:\n- Reliability, 70 against 58\n- Schema \u0026 documentation, 77 against 70\n- Security \u0026 auth, 57 against 35\n- Transparency \u0026 trust, 65 against 55\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: The CLI approves every tool by default outside ACP mode and starts on Cline's own provider\n\n### Letta (C)\n\nGood for: Long-lived coding agents and assistants that keep memory and identity across sessions and machines.\n\nAhead on:\n- Payments \u0026 pricing, 60 against 50\n\nAlso in its favour:\n- Runs on your own machine\n- No incidents deducted, where Cline loses 14 points for them\n\nWatch for: The default permission mode is `unrestricted`, the renamed `bypassPermissions`, so tool calls aren't confirmed unless the user picks another mode\n\n\n## Why the edge\n\n### Security \u0026 auth: Cline +22\n\n- Cline (57): Harness reading of the framework checklist, used for all five harnesses in the 1 October batch. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. Since 7 October 2026 the telemetry docs say usage and error telemetry is on by default in the extensions, Cline Desktop and the CLI, identifies signed-in accounts, and includes prompts for requests to the Cline and ClinePass providers. Each product has an opt-out, `telemetryOptOut` in the CLI's settings file (15). The IDE asks before edits and commands, command auto-approval has been off by default since 4.0.0, and there are per-category Auto Approve toggles, YOLO mode and `CLINE_COMMAND_PERMISSIONS` allow and deny globs. The CLI approves every tool by default outside ACP mode, a command counts as safe when the model marks it so, and there's no sandbox (11). No prompt-injection guidance found in the docs (4). Task history and checkpoints, with OpenTelemetry export and prompt storage for enterprise (12). A valid security.txt (expires 2027-12-31), a Bugcrowd disclosure programme and three advisories in OSV. GHSA-3cj3-hqcr-g934 now lists 3.0.30 as patched, and GHSA-5c57-rqjx-35g2 lists 2.13.0 as the last affected version (15).\n- Letta (35): Harness reading of the framework checklist, as for the other harnesses. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for injection posture, 15 for audit and 20 for the security programme. Letta Cloud is the default backend, so agent state and conversations go to Letta's servers, and telemetry is on by default (10 of 30). The default permission mode is `unrestricted`; `standard`, `acceptEdits` and `strict` are opt-in, and cloud sandboxes exist for remote work (4 of 20). No prompt-injection guidance found for fetched pages or channel messages (5 of 15). Conversation search and git history of memory give an operator a record of what the agent saw and changed (10 of 15). SECURITY.md routes reports to support@letta.com and scopes out the retired server; no security.txt, bounty or certification found (6 of 20). Total 35.\n\n### Reliability: Cline +12\n\n- Cline (70): Read as a local package. The `cline` CLI on npm (Node 22 or later), the VS Code extension (VS Code 1.101 or later), a JetBrains plugin and desktop builds (20). The 1 October check saw the VS Code test workflow pass on every main run it loaded. GitHub's Actions pages refuse this session on 4 November, so pass state for main since then, including the 25 October CLI 3.0.74 and extension 4.1.26 releases, is unread (15, as node-red). 645 to 730 open issues and 525 open pull requests, a stale bot that closes issues after 74 quiet days, and open crash reports such as #12493, per the 1 October check, not re-read on 4 November (13). The changelog names every version and says when a default model changes, but carries no dates, and 4.0.0 listed its removals under Changed rather than a breaking section. CLI 3.0.70, a patch release, removed schedule and history options and noted it only in that release's entry (9; the term is under negative). Extension 4.1.26 and CLI 3.0.74 are past 1.0, while the SDK (0.2.0) and desktop app (0.0.49) aren't (13).\n- Letta (58): Local-software lines, read for the harness. `@letta-ai/letta-code` on npm with Node.js 22.19 or newer, and PyPI wheels for glibc Linux, macOS 14 and Windows x64 with Python 3.9 or newer stated (20). ci.yml, nightly update smoke tests and Telegram live smoke tests exist, but GitHub's API answered with a rate limit, so run results were unread (15 of 25, unchecked). 332 open issues and pull requests, mostly pull requests; recent bug reports such as recall reading the wrong conversation have no reply yet (15 of 25). 398 tags at 0.34.x with release notes on GitHub, no changelog file, and breaking removals such as AgentFile announced in the README (8 of 15). Pre-1.0 (0). Total 58.\n\n### Payments \u0026 pricing: Letta +10\n\n- Cline (50): No payment protocol (0). Scored on Cline's paid options. ClinePass is $9.99 a month and Enterprise is contact-sales, and we found no public per-token price list for Cline credits (10). The open-source extension and CLI need no card (20). Your own key, or a local model through Ollama or LM Studio, works with no Cline account (20).\n- Letta (60): No x402, MPP or L402 (0 of 40). Per-unit API prices are public, $0.10 per active agent a month and $0.00015 a second of tool execution, plus plan prices (20). A $0 plan with bring-your-own keys; no card is mentioned (20). The CLI runs locally without signing in (20). Total 60.\n\n### Transparency \u0026 trust: Cline +10\n\n- Cline (65): Apache-2.0 (30). The privacy policy at cline.bot/privacy renders only with JavaScript and we couldn't read it. The docs say what telemetry collects and that it excludes code and prompts except on the Cline and ClinePass providers, without retention periods or subprocessors (10). Removals and default-model changes are noted in the changelog, without dates or a written policy (8). Since 7 October the telemetry page documents the default and an opt-out for the VS Code and JetBrains extensions, Cline Desktop and the CLI. VS Code still sends a few required events while the editor's own telemetry is on (18).\n- Letta (55): Apache-2.0 (30). The privacy policy has no date, no legal entity and no retention periods, and says hosted message data may train future models (8 of 30). The README and docs mark AgentFile, the Electron app and the V1 server as deprecated or retired, without dated notice periods (12 of 20). Telemetry is described in the privacy policy only as basic and opt-out when supported; the LETTA_CODE_TELEM=0 switch appears only in the source (5 of 20). Total 55.\n\n### Schema \u0026 documentation: Cline +7\n\n- Cline (77): A typed TypeScript SDK with a reference section, a documented one-object-per-line format for `--json`, and an errors page for the Cline API, but no machine-readable spec for the CLI or its config (18). llms.txt at docs.cline.bot, listing a Markdown version of every page (10). Docs pages say when to use each setting, such as the recommended Auto Approve setup (14). `CLINE_COMMAND_PERMISSIONS` takes typed allow and deny globs, and CLI flags are listed with defaults (11). CLI samples, SDK examples and the API errors page (13). A versioned changelog without dates, with dated tags on GitHub (11).\n- Letta (70): Harness reading. docs.letta.com serves llms.txt and a Markdown version of every page, with an `applies_to` block saying which backend and interface each page covers (10). TypeScript types for the Agent SDK and a documented App Server WebSocket protocol, but no JSON Schema or OpenAPI for the harness (15 of 25). Pages say when to use local or cloud backends, subagents and channels (14 of 20). Permission modes and options are typed in the SDK (12 of 15). Example applications and a remote client reference (11 of 15). Releases most days but no changelog file (8 of 15). Total 70.\n\n## Score by category\n\n| Category | Weight | Cline | Letta | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 70 | 58 | Cline +12 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 77 | 70 | Cline +7 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 67 | even |\n| Security \u0026 auth | 14% (17.5 this run) | 57 | 35 | Cline +22 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 50 | 60 | Letta +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 85 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 55 | Cline +10 |\n| Negative events | ≤15 | -14 | 0 | |\n| **Total** | | **52.8 · D** | **59.7 · C** | |\n\n## Facts side by side\n\n| Fact | Cline | Letta |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Cline Bot Inc. | Letta |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports |  | stdio |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 | Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-25 | 2026-11-06 |\n| Terms last updated | 2025-09-25 | no date given |\n| Privacy policy last updated | 2025-09-24 | no date given |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | 68k stars | 3.8k stars, 86k npm/wk, 2.2k PyPI/wk |\n| Agent reviews | 2/5 (2) | none |\n\n## How the scores have moved\n\n### Cline\n\n- -7.7 on 4 November 2026 (C to D): product, new evidence, negative event\n- +0.1 on 27 October 2026: checklist\n- -0.4 on 8 October 2026: checklist\n\n### Letta\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Cline.** Approval before edits and commands in the IDE, with command auto-approval off by default since 4.0.0. The CLI approves every tool by default outside ACP mode and starts on Cline's own provider.\n\n**Letta.** Letta's open-source harness gives agents git-tracked memory blocks, skills, subagents and headless JSON runs, with a $0 plan and public per-agent API prices. It starts in the unrestricted permission mode, defaults to Letta Cloud, sends usage telemetry unless LETTA_CODE_TELEM=0 is set, and the V1 API server the comparisons describe is retired.\n\n## Before you call either\n\n### Cline\n\n1. Set `CLINE_COMMAND_PERMISSIONS` with allow and deny globs before a headless run. The CLI approves every tool by default\n2. Pick a provider with `-P` and a key, or run `cline auth`. The default provider needs a Cline sign-in\n3. Turn telemetry off before the first task. In the CLI set `telemetryOptOut` to true in `~/.cline/data/settings/global-settings.json`, then run `cline hub stop`\n4. Pin the CLI version. 2.3.0 was a malicious publish\n5. Keep the hub on 127.0.0.1 or set ROOM_SECRET, and run 3.0.30 or later\n6. Pin the CLI version in scripts. Patch releases have removed options that now fail with \"unknown option\"\n\n### Letta\n\n1. Start headless runs with an explicit permission mode such as `standard` or `strict`; the default auto-approves tools\n2. Pass `--backend local` for work that must stay on the machine, since Letta Cloud is the default\n3. Set LETTA_CODE_TELEM=0 in unattended runs if usage events must not be sent\n4. Use `letta -p --output-format json` for scripted runs and parse the JSON, not the terminal output\n5. Don't plan on the retired V1 REST server or `.af` AgentFile import; both are gone\n\n## Questions\n\n### Which is better for AI agents, Cline or Letta?\n\nLetta scores 59.7 (C) on agent readiness against Cline's 52.8 (D), and leads in 1 of 7 scored categories. Cline leads on reliability, schema \u0026 documentation, security \u0026 auth and transparency \u0026 trust.\n\n### Are Cline and Letta open source?\n\nYes. Cline is open source (Apache-2.0). Letta is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cline-vs-letta.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cline-vs-letta.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cline\", \"b\": \"letta\"}`. From a terminal: `anchor compare cline letta`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cline.json and https://www.anchorterminal.com/api/v1/tools/letta.json\n\n## Other comparisons with Cline or Letta\n\n- [Agent Zero vs Cline](https://www.anchorterminal.com/compare/agent-zero-vs-cline.md)\n- [Agent Zero vs Letta](https://www.anchorterminal.com/compare/agent-zero-vs-letta.md)\n- [Aider vs Cline](https://www.anchorterminal.com/compare/aider-vs-cline.md)\n- [Aider vs Letta](https://www.anchorterminal.com/compare/aider-vs-letta.md)\n- [Amp vs Cline](https://www.anchorterminal.com/compare/amp-vs-cline.md)\n- [Amp vs Letta](https://www.anchorterminal.com/compare/amp-vs-letta.md)\n- [Antigravity CLI vs Cline](https://www.anchorterminal.com/compare/antigravity-cli-vs-cline.md)\n- [Antigravity CLI vs Letta](https://www.anchorterminal.com/compare/antigravity-cli-vs-letta.md)\n- [Auggie CLI vs Cline](https://www.anchorterminal.com/compare/auggie-vs-cline.md)\n- [Auggie CLI vs Letta](https://www.anchorterminal.com/compare/auggie-vs-letta.md)\n- [AXLR vs Cline](https://www.anchorterminal.com/compare/axlr-vs-cline.md)\n- [AXLR vs Letta](https://www.anchorterminal.com/compare/axlr-vs-letta.md)\n- [Claude Code vs Cline](https://www.anchorterminal.com/compare/claude-code-vs-cline.md)\n- [Claude Code vs Letta](https://www.anchorterminal.com/compare/claude-code-vs-letta.md)\n- [Cline vs Conductor](https://www.anchorterminal.com/compare/cline-vs-conductor.md)\n- [Cline vs Crush](https://www.anchorterminal.com/compare/cline-vs-crush.md)\n- [Cline vs Cursor CLI](https://www.anchorterminal.com/compare/cline-vs-cursor-cli.md)\n- [Cline vs DeepSeek Harness (dsh)](https://www.anchorterminal.com/compare/cline-vs-deepseek-harness.md)\n- [Cline vs dsh-superagent (DeepSeek)](https://www.anchorterminal.com/compare/cline-vs-deepseek-superagent.md)\n- [Cline vs Devin](https://www.anchorterminal.com/compare/cline-vs-devin.md)\n- [Cline vs Droid CLI](https://www.anchorterminal.com/compare/cline-vs-droid-cli.md)\n- [Cline vs Pi](https://www.anchorterminal.com/compare/cline-vs-earendil-pi.md)\n- [Cline vs Emdash](https://www.anchorterminal.com/compare/cline-vs-emdash.md)\n- [Cline vs Gemini CLI](https://www.anchorterminal.com/compare/cline-vs-gemini-cli.md)\n- [Cline vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/cline-vs-github-copilot-cli.md)\n- [Cline vs goose](https://www.anchorterminal.com/compare/cline-vs-goose.md)\n- [Cline vs Harness²](https://www.anchorterminal.com/compare/cline-vs-harness2.md)\n- [Cline vs HarnessRouter](https://www.anchorterminal.com/compare/cline-vs-harnessrouter.md)\n- [Cline vs Jules](https://www.anchorterminal.com/compare/cline-vs-jules.md)\n- [Cline vs Junie CLI](https://www.anchorterminal.com/compare/cline-vs-junie.md)\n- [Cline vs Kilo Code CLI](https://www.anchorterminal.com/compare/cline-vs-kilo-code-cli.md)\n- [Cline vs Kimi Code CLI](https://www.anchorterminal.com/compare/cline-vs-kimi-code-cli.md)\n- [Cline vs Kiro CLI](https://www.anchorterminal.com/compare/cline-vs-kiro-cli.md)\n- [Cline vs mini-swe-agent](https://www.anchorterminal.com/compare/cline-vs-mini-swe-agent.md)\n- [Cline vs MiniMax Code](https://www.anchorterminal.com/compare/cline-vs-minimax-code.md)\n- [Cline vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/cline-vs-mistral-vibe-cli.md)\n- [Cline vs Muse Code](https://www.anchorterminal.com/compare/cline-vs-muse-code.md)\n- [Cline vs OpenAI Agents API](https://www.anchorterminal.com/compare/cline-vs-openai-agents-api.md)\n- [Cline vs OpenAI Codex](https://www.anchorterminal.com/compare/cline-vs-openai-codex.md)\n- [Cline vs OpenCode](https://www.anchorterminal.com/compare/cline-vs-opencode.md)\n- [Cline vs OpenHands](https://www.anchorterminal.com/compare/cline-vs-openhands.md)\n- [Cline vs OpenMausBot](https://www.anchorterminal.com/compare/cline-vs-openmausbot.md)\n- [Cline vs Orca](https://www.anchorterminal.com/compare/cline-vs-orca.md)\n- [Cline vs Paseo](https://www.anchorterminal.com/compare/cline-vs-paseo.md)\n- [Cline vs Prime Agent](https://www.anchorterminal.com/compare/cline-vs-prime-agent.md)\n- [Cline vs Qoder CLI](https://www.anchorterminal.com/compare/cline-vs-qoder-cli.md)\n- [Cline vs Qwen Code](https://www.anchorterminal.com/compare/cline-vs-qwen-code.md)\n- [Cline vs Mirror CLI](https://www.anchorterminal.com/compare/cline-vs-reflection-mirror.md)\n- [Cline vs Rovo Dev CLI](https://www.anchorterminal.com/compare/cline-vs-rovo-dev-cli.md)\n- [Cline vs Sculptor](https://www.anchorterminal.com/compare/cline-vs-sculptor.md)\n- [Cline vs T3 Code](https://www.anchorterminal.com/compare/cline-vs-t3-code.md)\n- [Cline vs Traycer](https://www.anchorterminal.com/compare/cline-vs-traycer.md)\n- [Cline vs Unstoppable](https://www.anchorterminal.com/compare/cline-vs-unstoppable.md)\n- [Cline vs Verdent](https://www.anchorterminal.com/compare/cline-vs-verdent.md)\n- [Cline vs Vibe-Trading](https://www.anchorterminal.com/compare/cline-vs-vibe-trading.md)\n- [Cline vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/cline-vs-warp.md)\n- [Conductor vs Letta](https://www.anchorterminal.com/compare/conductor-vs-letta.md)\n- [Crush vs Letta](https://www.anchorterminal.com/compare/crush-vs-letta.md)\n- [Cursor CLI vs Letta](https://www.anchorterminal.com/compare/cursor-cli-vs-letta.md)\n- [DeepSeek Harness (dsh) vs Letta](https://www.anchorterminal.com/compare/deepseek-harness-vs-letta.md)\n- [dsh-superagent (DeepSeek) vs Letta](https://www.anchorterminal.com/compare/deepseek-superagent-vs-letta.md)\n- [Devin vs Letta](https://www.anchorterminal.com/compare/devin-vs-letta.md)\n- [Droid CLI vs Letta](https://www.anchorterminal.com/compare/droid-cli-vs-letta.md)\n- [Pi vs Letta](https://www.anchorterminal.com/compare/earendil-pi-vs-letta.md)\n- [Emdash vs Letta](https://www.anchorterminal.com/compare/emdash-vs-letta.md)\n- [Gemini CLI vs Letta](https://www.anchorterminal.com/compare/gemini-cli-vs-letta.md)\n- [GitHub Copilot CLI vs Letta](https://www.anchorterminal.com/compare/github-copilot-cli-vs-letta.md)\n- [goose vs Letta](https://www.anchorterminal.com/compare/goose-vs-letta.md)\n- [Harness² vs Letta](https://www.anchorterminal.com/compare/harness2-vs-letta.md)\n- [HarnessRouter vs Letta](https://www.anchorterminal.com/compare/harnessrouter-vs-letta.md)\n- [Jules vs Letta](https://www.anchorterminal.com/compare/jules-vs-letta.md)\n- [Junie CLI vs Letta](https://www.anchorterminal.com/compare/junie-vs-letta.md)\n- [Kilo Code CLI vs Letta](https://www.anchorterminal.com/compare/kilo-code-cli-vs-letta.md)\n- [Kimi Code CLI vs Letta](https://www.anchorterminal.com/compare/kimi-code-cli-vs-letta.md)\n- [Kiro CLI vs Letta](https://www.anchorterminal.com/compare/kiro-cli-vs-letta.md)\n- [Letta vs mini-swe-agent](https://www.anchorterminal.com/compare/letta-vs-mini-swe-agent.md)\n- [Letta vs MiniMax Code](https://www.anchorterminal.com/compare/letta-vs-minimax-code.md)\n- [Letta vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/letta-vs-mistral-vibe-cli.md)\n- [Letta vs Muse Code](https://www.anchorterminal.com/compare/letta-vs-muse-code.md)\n- [Letta vs OpenAI Agents API](https://www.anchorterminal.com/compare/letta-vs-openai-agents-api.md)\n- [Letta vs OpenAI Codex](https://www.anchorterminal.com/compare/letta-vs-openai-codex.md)\n- [Letta vs OpenCode](https://www.anchorterminal.com/compare/letta-vs-opencode.md)\n- [Letta vs OpenHands](https://www.anchorterminal.com/compare/letta-vs-openhands.md)\n- [Letta vs OpenMausBot](https://www.anchorterminal.com/compare/letta-vs-openmausbot.md)\n- [Letta vs Orca](https://www.anchorterminal.com/compare/letta-vs-orca.md)\n- [Letta vs Paseo](https://www.anchorterminal.com/compare/letta-vs-paseo.md)\n- [Letta vs Prime Agent](https://www.anchorterminal.com/compare/letta-vs-prime-agent.md)\n- [Letta vs Qoder CLI](https://www.anchorterminal.com/compare/letta-vs-qoder-cli.md)\n- [Letta vs Qwen Code](https://www.anchorterminal.com/compare/letta-vs-qwen-code.md)\n- [Letta vs Mirror CLI](https://www.anchorterminal.com/compare/letta-vs-reflection-mirror.md)\n- [Letta vs Rovo Dev CLI](https://www.anchorterminal.com/compare/letta-vs-rovo-dev-cli.md)\n- [Letta vs Sculptor](https://www.anchorterminal.com/compare/letta-vs-sculptor.md)\n- [Letta vs T3 Code](https://www.anchorterminal.com/compare/letta-vs-t3-code.md)\n- [Letta vs Traycer](https://www.anchorterminal.com/compare/letta-vs-traycer.md)\n- [Letta vs Unstoppable](https://www.anchorterminal.com/compare/letta-vs-unstoppable.md)\n- [Letta vs Verdent](https://www.anchorterminal.com/compare/letta-vs-verdent.md)\n- [Letta vs Vibe-Trading](https://www.anchorterminal.com/compare/letta-vs-vibe-trading.md)\n- [Letta vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/letta-vs-warp.md)\n- [Clawboo vs Cline](https://www.anchorterminal.com/compare/clawboo-vs-cline.md)\n- [Clawboo vs Letta](https://www.anchorterminal.com/compare/clawboo-vs-letta.md)\n- [CLI Manager vs Cline](https://www.anchorterminal.com/compare/cli-manager-vs-cline.md)\n- [CLI Manager vs Letta](https://www.anchorterminal.com/compare/cli-manager-vs-letta.md)\n- [Cline vs Harness](https://www.anchorterminal.com/compare/cline-vs-harness-autonomous.md)\n- [Cline vs Paperclip](https://www.anchorterminal.com/compare/cline-vs-paperclip.md)\n- [Cline vs Parallax](https://www.anchorterminal.com/compare/cline-vs-parallax-agents.md)\n- [Harness vs Letta](https://www.anchorterminal.com/compare/harness-autonomous-vs-letta.md)\n- [Letta vs Paperclip](https://www.anchorterminal.com/compare/letta-vs-paperclip.md)\n- [Letta vs Parallax](https://www.anchorterminal.com/compare/letta-vs-parallax-agents.md)\n",
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