{ "data": { "a": { "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": 684, "ranked": true, "rankOf": 1486, "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" } }, "answer": "OpenHands scores 70.3 (BB) on agent readiness against Letta's 59.7 (C), and leads in 5 of 7 scored categories.", "b": { "slug": "openhands", "name": "OpenHands", "vendor": "All Hands AI", "vendorUrl": "https://openhands.dev", "kind": "harness", "category": "agent-harnesses", "summary": "Open-source coding agent with a self-hosted web interface, local and remote execution, and scheduled or webhook-driven automation.", "url": "https://www.anchorterminal.com/tools/openhands", "markdownUrl": "https://www.anchorterminal.com/tools/openhands.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/openhands.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/openhands.json", "dns": "openhands.grade.anchorterminal.com", "repo": "https://github.com/OpenHands/OpenHands", "license": "MIT (Agent Canvas, SDK, tools and Agent Server). OpenHands Cloud is a hosted service", "transports": [], "packages": [ { "registry": "npm", "name": "@openhands/agent-canvas" }, { "registry": "pypi", "name": "openhands-sdk" }, { "registry": "pypi", "name": "openhands-agent-server" }, { "registry": "oci", "name": "ghcr.io/openhands/agent-canvas" } ], "auth": "mixed", "authNotes": "Local installs bind to 127.0.0.1 and inject a session key into the page. Public mode (`--public`) needs `LOCAL_BACKEND_API_KEY`, sent as `X-Session-API-Key` on every API call. Model credentials are your own provider keys or an OpenHands LLM key, and OpenHands Cloud has its own sign-in and API keys.", "pricing": "freemium", "pricingNotes": "Agent Canvas, the SDK and the Agent Server are free and MIT. Teams is $500 a month for up to 10 users (plus $50 a month a seat), self-hosted, with a 30-day trial and a cap of 5,000 sessions a month. Enterprise is priced by sales. The OpenHands LLM provider bills model calls at provider rates with no markup per the docs, and two DeepSeek models are free on app.all-hands.dev.", "priceSummary": "Freemium", "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": 89800, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-01" }, "docsUrl": "https://docs.openhands.dev", "llmsTxt": "https://docs.openhands.dev/llms.txt", "openapi": "https://raw.githubusercontent.com/OpenHands/docs/main/openapi/agent-sdk.json", "capabilities": [ "agent.harness", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "open-source", "local", "self-hosted", "hosted", "freemium", "python", "typescript", "docker", "openapi", "llms-txt", "telemetry-default-on" ], "lastRelease": "2026-10-28", "graded": true, "anchor": { "graded": true, "score": 70.3, "grade": "BB", "agentReady": true, "rank": 206, "ranked": true, "rankOf": 1486, "categoryRank": 5, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 85, "payments": 60, "reliability": 90, "schema": 90, "security": 64, "transparency": 67 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": -7, "negativeNotes": [ "Current behaviour, re-checked 2026-11-01. Agent Canvas sends a `canvas_install` event with platform, user agent, referrer and origin to PostHog through OpenHands' proxy at z.openhands.dev on first use, \"regardless of consent\", and the consent banner's box is ticked by default. The source comment says the proxy is there to get past ad blockers, and no user-facing doc mentions the early event. Undisclosed telemetry, -3. https://github.com/OpenHands/OpenHands/blob/main/src/services/telemetry.ts", "2026-03-23. GHSA-7h8w-hj9j-8rjw (CVE-2026-33718, 7.6 in the advisory, 9.9 at NVD), command injection through the `path` parameter of the git diff endpoint let an authenticated user run commands in the agent sandbox. Fixed in 1.5.0 and published, over seven months old, -1. https://github.com/OpenHands/OpenHands/security/advisories/GHSA-7h8w-hj9j-8rjw", "2026-08-06. CVE-2026-19022 (6.3), command injection in `initialize_repo` in the pull request resolver of OpenHands 0.62.0 and earlier, the V0 line the V1 rewrite replaced. No GitHub advisory found, -1. https://nvd.nist.gov/vuln/detail/CVE-2026-19022", "2026-10-26. CVE-2026-112346 (CVSS 3.1 9.8, published by VulnCheck). Before SDK 1.52.0 the DockerWorkspace and Apptainer launchers bound the sandbox Agent Server to 0.0.0.0 with no session key, so anyone who could reach the published port could run shell commands as root in the sandbox and read its secrets. Fixed on 3 October (commit 7b66584, \"publish Docker ports on loopback\") and released in 1.52.0 on 5 October. Fixed, inside six months, -2. https://nvd.nist.gov/vuln/detail/CVE-2026-112346" ], "verdict": "A self-hosted coding agent with a typed SDK, an Agent Server API and a Docker container per conversation on request. Agent Canvas still starts with confirmation off on the host's filesystem, sends an install event before asking consent, and a critical SDK sandbox flaw fixed in October was published by a third party.", "bestFor": "Teams that want to self-host a coding agent with a web UI, per-conversation Docker sandboxes and scheduled or webhook automations, or embed the agent through a Python SDK and REST API.", "strengths": [ "A Docker container per conversation with `OH_CONVERSATION_RUNTIME=docker`, each with its own Agent Server", "Typed Python SDK and an Agent Server REST API with an OpenAPI 3.1 spec, plus a TypeScript client", "Confirmation policies (always, never, at or above a risk level) with LLM, Invariant and GraySwan risk analysers", "Any model through LiteLLM, local ones included, and MCP over stdio, SSE and streamable HTTP with OAuth", "29 Agent Canvas and 33 SDK releases from 3 August to 28 October 2026, and the SDK kept its stated removal deadline on 28 October" ], "weaknesses": [ "Confirmation mode is off by default in Agent Canvas, and the npm install gives the agent the host's whole filesystem", "One anonymous install event goes to PostHog before the consent prompt, whose opt-in box is pre-ticked", "CVE-2026-112346 (9.8), an unauthenticated sandbox server in SDK workspaces before 1.52.0, was published by VulnCheck with no OpenHands advisory found", "openhands.dev's security.txt expired on 28 October 2026, and the Canvas CHANGELOG.md stops at 1.0.0-alpha.2", "The privacy policy (3 September 2025) allows training on Cloud content and gives no retention period" ], "agentNotes": [ "Set `AGENT_CANVAS_DISABLE_TELEMETRY=1` and `DO_NOT_TRACK=1` before the first start", "Start Canvas with `OH_CONVERSATION_RUNTIME=docker` or use the Docker image. The npm install runs the agent on the host", "Turn on confirmation mode with a risk threshold. Canvas starts with it off", "Pin openhands-sdk and openhands-workspace at 1.52.0 or later so DockerWorkspace binds to loopback, and set `OH_SESSION_API_KEYS_0` on any reachable Agent Server", "Use the SDK or the Agent Server API for headless runs. The `openhands --headless` CLI is no longer maintained" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 70.3 } ], "editorialScores": { "ergonomics": 78, "maintenance": 85, "payments": 60, "reliability": 90, "schema": 90, "security": 64, "transparency": 67 }, "provenanceScore": 67, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-11-01", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install -g @openhands/agent-canvas # Node 24+ and uv; or: pip install openhands-sdk openhands-tools", "headless": { "env": { "DO_NOT_TRACK": "1", "LLM_API_KEY": "\u003ckey\u003e", "LLM_MODEL": "\u003cprovider/model\u003e" }, "sdk": "pip install openhands-sdk openhands-tools", "server": "OH_CONVERSATION_RUNTIME=docker AGENT_CANVAS_DISABLE_TELEMETRY=1 agent-canvas --backend-only" } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/openhands" }, "area": "frameworks", "provenance": { "legalEntity": "All Hands AI", "domain": "openhands.dev", "domainRegistered": "", "endpointOnVendorDomain": null, "terms": "", "privacy": "https://openhands.dev/privacy", "statusPage": "", "changelog": "https://github.com/OpenHands/OpenHands/releases", "securityTxt": "expired", "checked": "2026-11-01", "notes": [ "The privacy policy (effective 3 September 2025, re-read on 1 November 2026) names All Hands AI, 24 Oak Street, Unit 2, Cambridge, MA 02139. We found no terms of service link on the pricing or privacy pages.", "openhands.dev/.well-known/security.txt lists security@openhands.dev and a responsible-disclosure policy, and expired on 2026-10-28T17:00Z (re-read on 1 November 2026). The policy page still loads.", "The SDK's LLM proxy still runs on llm-proxy.app.all-hands.dev, the company's older domain, and the free models are served from app.all-hands.dev.", "We didn't check for a status page or the domain's registration date." ], "score": 67 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/openhands.json", "live": { "slug": "openhands", "versions": [ { "registry": "github", "name": "OpenHands/OpenHands", "version": "v1.37.0", "released": "2026-11-06", "seenAt": "2026-11-06T23:52:55.644351263Z" }, { "registry": "npm", "name": "@openhands/agent-canvas", "version": "1.37.0", "seenAt": "2026-11-06T23:52:52.704356412Z" }, { "registry": "pypi", "name": "openhands-agent-server", "version": "1.60.2", "released": "2026-11-06", "seenAt": "2026-11-06T23:52:53.780155639Z" }, { "registry": "pypi", "name": "openhands-sdk", "version": "1.60.2", "released": "2026-11-06", "seenAt": "2026-11-06T23:52:53.629791716Z" } ], "githubStars": 92836, "npmWeekly": 5706, "pypiWeekly": 728008, "securityTxt": { "url": "https://openhands.dev/.well-known/security.txt", "state": "expired", "expires": "2026-10-28T17:00:00.000Z", "checkedAt": "2026-11-07T16:01:03.79870525Z" }, "llmsTxt": { "url": "https://docs.openhands.dev/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:33:31.427453135Z" }, "domain": { "domain": "openhands.dev", "registered": "2025-07-23", "source": "https://pubapi.registry.google/rdap/domain/openhands.dev", "checkedAt": "2026-11-01T14:07:01.187961218Z" }, "pages": [ { "url": "https://openhands.dev/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:15:28.234719589Z", "changedAt": "2026-11-07T14:15:28.234719589Z", "fingerprint": "67ba1787cd6e" } ], "github": { "repo": "openhands/openhands", "checkedAt": "2026-11-02T09:13:34.825447563Z", "stars": 92484, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T09:06:28Z", "openIssues": 589, "openPRs": 593, "issuesOpened90d": 1107, "issuesClosed90d": 738, "prsMerged90d": 901, "ci": { "branch": "main", "runs": 50, "success": 31, "failure": 13, "other": 6, "latest": "success", "latestAt": "2026-11-02T08:56:24Z" }, "advisories": [ { "ghsa": "GHSA-7h8w-hj9j-8rjw", "cve": "CVE-2026-33718", "severity": "high", "published": "2026-03-23T17:51:58Z" } ] }, "updatedAt": "2026-11-07T16:01:03.79870525Z" } }, "edges": [ { "by": 32, "category": "reliability", "leads": "openhands", "name": "Reliability", "reasons": { "a": "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.", "b": "Read as a local package. Official npm package @openhands/agent-canvas (Node 24 or later, plus uv), a Docker image on GHCR and openhands-sdk on PyPI (Python 3.12 or later) (20). A CI workflow (ci.yml) runs on main beside desktop, Docker and end-to-end workflows; the runs passed on every load on 1 October, and GitHub's pages refused us on 1 November, so the award rests on that check (25). 456 open issues and 395 open pull requests with priority labels and a high-priority Cloud resume bug (#17664), per the 1 October check, not re-read on 1 November (18). Dated release notes for every Canvas version and a written SDK rule of at least five minor releases before a public API or REST contract is removed, which the SDK followed on 28 October when it dropped the ACP curated model lists at their stated 1.59.0 deadline, but the Canvas CHANGELOG.md still stops at 1.0.0-alpha.2 (12). Canvas is 1.34.0 and the SDK 1.59.0, and the README's beta badge was removed on 23 October 2026 (commit 4d1c4d1, noted in the 1.33.0 release notes), so the product is no longer labelled beta. Only the Apps extension API keeps a beta label (15)." }, "scores": { "a": 58, "b": 90 } }, { "by": 29, "category": "security", "leads": "openhands", "name": "Security \u0026 auth", "reasons": { "a": "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.", "b": "Harness reading of the framework checklist, as for goose and the other agent harnesses. 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. Agent Canvas still sends a `canvas_install` event to PostHog through z.openhands.dev on first use \"regardless of consent\" (telemetry.ts header, re-read on 1 November), and the consent banner's box is still `defaultChecked`. `AGENT_CANVAS_DISABLE_TELEMETRY=1`, `--disable-telemetry`, `VITE_DO_NOT_TRACK=1` or the browser's Do Not Track setting stops all of it, the last since 1.26.0 (15). Confirmation policies (always, never, at or above a risk level) and a Docker sandbox per conversation exist, but Canvas still starts with `confirmation_mode: false` and the npm install runs on the host with full filesystem access. No network egress controls found. Local listeners bind to 127.0.0.1 with an injected session key, and since SDK 1.52.0 (5 October) DockerWorkspace publishes its ports on loopback (12). LLM, Invariant and GraySwan risk analysers and a policy-rail module, documented, all advisory (11). Conversation event logs, completion logs and OpenTelemetry tracing through Laminar, with hosted Laminar setup documented on 16 October (13). Security programme. openhands.dev's security.txt expired on 28 October 2026 (re-read on 1 November), though the responsible-disclosure policy it names still loads. A Vanta-hosted trust page per the 1 October check, and the git diff injection published as an OpenHands advisory with a CVE. CVE-2026-112346, the SDK's unauthenticated sandbox server, was published by VulnCheck on 26 October with no OpenHands advisory found. No bug bounty found. 13, down from 15 for the expired file, read as shopware's and tokeneconomizer's expired files are (still credited for the policy behind them, less than a valid file)." }, "scores": { "a": 35, "b": 64 } }, { "by": 20, "category": "schema", "leads": "openhands", "name": "Schema \u0026 documentation", "reasons": { "a": "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.", "b": "The Agent Server REST API has an OpenAPI 3.1 spec in the docs repository (40 paths, still labelled 0.1.0), the Cloud API has another (155 paths), SDK models are Pydantic-typed and there's a TypeScript client (25). llms.txt at docs.openhands.dev (551 lines on 1 November), with no CLI, local GUI or V0 pages in it (10). The docs have a when-to-use page and examples of good and bad task instructions. On 23 October the Deprecated Projects group (local GUI, CLI, V0) was taken out of the navigation and links to it reworded towards Agent Canvas, though the pages stay reachable by URL and the SDK architecture page still links the CLI repository (15). Confirmation policies, security analysers and MCP configs are discriminated Pydantic unions with validators (13). SDK examples are checked by a CI workflow and there are troubleshooting pages, but we found no error reference for the Agent Server (12). Dated release notes for each Canvas version in the docs (1.25.0 to 1.34.0 added since 1 October), and release tags (15)." }, "scores": { "a": 70, "b": 90 } }, { "by": 12, "category": "transparency", "leads": "openhands", "name": "Transparency \u0026 trust", "reasons": { "a": "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.", "b": "MIT across Canvas, SDK, tools and Agent Server (30). The privacy policy (effective 3 September 2025, re-read on 1 November) doesn't separate the open-source stack from the Cloud service, keeps data as long as reasonably necessary, allows training on content from the Services and has no subprocessor list (12). A written SDK deprecation runway of five minor releases, kept on 28 October when the ACP model lists were removed at their 1.59.0 deadline, and the CLI's unmaintained notice in its README without a date on the page (15). The consent prompt calls the data anonymous and the Docker page documents `AGENT_CANVAS_DISABLE_TELEMETRY`, but no user-facing page mentions the install event sent before consent (10)." }, "scores": { "a": 55, "b": 67 } }, { "by": 11, "category": "ergonomics", "leads": "openhands", "name": "Agent ergonomics", "reasons": { "a": "Harness reading. Toolsets switch with `/model`, skills load per agent, and subagents run in the background (18 of 25). Context is managed through memory blocks, reflection and dreaming (12 of 20). `letta -p --output-format json` for scripted runs and an App Server for programmatic control (12 of 20). Conversations resume by agent and conversation id, and memory is git-tracked so changes can be reverted (15 of 20). Runs with no account on the local backend, with one SDK language, TypeScript (10 of 15). Total 67.", "b": "Harness reading of the framework line, scored on what an agent or pipeline driving it has to supply. The default agent carries three tools (terminal, file editor, task tracker), and `filter_tools_regex` trims MCP tools before they reach the model (23). Stuck detection is on by default and a condenser compacts long histories, but Canvas leaves `max_iterations` unset and we found no cost cap (15). Headless runs go through the SDK, the Agent Server REST API or the Cloud API with typed events, and the old CLI's `--headless` mode is unmaintained (14). Conversations persist and resume, and a Docker conversation keeps its workspace and history when the container is replaced (16). Python SDK and TypeScript client, but the quickstart needs Node 24 and uv, and the defaults skip both confirmation and the sandbox (10)." }, "scores": { "a": 67, "b": 78 } } ], "facts": [ { "a": "Agent harness", "b": "Agent harness", "name": "Kind" }, { "a": "Letta", "b": "All Hands AI", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "stdio", "b": "", "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": "MIT (Agent Canvas, SDK, tools and Agent Server). OpenHands Cloud is a hosted service", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-11-06", "b": "2026-10-28", "name": "Last release" }, { "a": "no date given", "b": "no document linked", "name": "Terms last updated" }, { "a": "no date given", "b": "2025-09-03", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not read yet", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not read yet", "name": "Arbitration or class-action waiver" }, { "a": "3.8k stars, 86k npm/wk, 2.2k PyPI/wk", "b": "90k stars", "name": "Popularity" }, { "a": "none", "b": "2.5/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "OpenHands scores 70.3 (BB) on agent readiness against Letta's 59.7 (C), and leads in 5 of 7 scored categories.", "question": "Which is better for AI agents, Letta or OpenHands?" }, { "answer": "Yes. Letta is open source (Apache-2.0). OpenHands is open source (MIT (Agent Canvas, SDK, tools and Agent Server). OpenHands Cloud is a hosted service).", "question": "Are Letta and OpenHands open source?" } ], "goodFor": [ { "aheadOn": null, "also": [ "Runs on your own machine", "No incidents deducted, where OpenHands loses 7 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" }, { "aheadOn": [ "Reliability, 90 against 58", "Schema \u0026 documentation, 90 against 70", "Agent ergonomics, 78 against 67", "Security \u0026 auth, 64 against 35", "Transparency \u0026 trust, 67 against 55" ], "also": [ "Agent-ready, a grade of BB or better" ], "goodFor": "Teams that want to self-host a coding agent with a web UI, per-conversation Docker sandboxes and scheduled or webhook automations, or embed the agent through a Python SDK and REST API.", "slug": "openhands", "watchFor": "Confirmation mode is off by default in Agent Canvas, and the npm install gives the agent the host's whole filesystem" } ], "history": { "letta": null, "openhands": [ { "causes": [ "security", "product" ], "date": "2026-11-01", "delta": -0.7, "from": 71, "fromGrade": "BB", "to": 70.3, "toGrade": "BB" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.2, "from": 70.8, "fromGrade": "BB", "to": 71, "toGrade": "BB" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.1, "from": 70.9, "fromGrade": "BB", "to": 70.8, "toGrade": "BB" } ] }, "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "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/agent-zero-vs-openhands.json", "title": "Agent Zero vs OpenHands", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-openhands" }, { "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/aider-vs-openhands.json", "title": "Aider vs OpenHands", "url": "https://www.anchorterminal.com/compare/aider-vs-openhands" }, { "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/amp-vs-openhands.json", "title": "Amp vs OpenHands", "url": "https://www.anchorterminal.com/compare/amp-vs-openhands" }, { "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/antigravity-cli-vs-openhands.json", "title": "Antigravity CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/antigravity-cli-vs-openhands" }, { "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/auggie-vs-openhands.json", "title": "Auggie CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/auggie-vs-openhands" }, { "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/axlr-vs-openhands.json", "title": "AXLR vs OpenHands", "url": "https://www.anchorterminal.com/compare/axlr-vs-openhands" }, { "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/claude-code-vs-openhands.json", "title": "Claude Code vs OpenHands", "url": "https://www.anchorterminal.com/compare/claude-code-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/cline-vs-letta.json", "title": "Cline vs Letta", "url": "https://www.anchorterminal.com/compare/cline-vs-letta" }, { "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/conductor-vs-letta.json", "title": "Conductor vs Letta", "url": "https://www.anchorterminal.com/compare/conductor-vs-letta" }, { "json": "https://www.anchorterminal.com/compare/conductor-vs-openhands.json", "title": "Conductor vs OpenHands", "url": "https://www.anchorterminal.com/compare/conductor-vs-openhands" }, { "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/crush-vs-openhands.json", "title": "Crush vs OpenHands", "url": "https://www.anchorterminal.com/compare/crush-vs-openhands" }, { "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/cursor-cli-vs-openhands.json", "title": "Cursor CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/cursor-cli-vs-openhands" }, { "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-harness-vs-openhands.json", "title": "DeepSeek Harness (dsh) vs OpenHands", "url": "https://www.anchorterminal.com/compare/deepseek-harness-vs-openhands" }, { "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/deepseek-superagent-vs-openhands.json", "title": "dsh-superagent (DeepSeek) vs OpenHands", "url": "https://www.anchorterminal.com/compare/deepseek-superagent-vs-openhands" }, { "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/devin-vs-openhands.json", "title": "Devin vs OpenHands", "url": "https://www.anchorterminal.com/compare/devin-vs-openhands" }, { "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/droid-cli-vs-openhands.json", "title": "Droid CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/droid-cli-vs-openhands" }, { "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/earendil-pi-vs-openhands.json", "title": "Pi vs OpenHands", "url": "https://www.anchorterminal.com/compare/earendil-pi-vs-openhands" }, { "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/emdash-vs-openhands.json", "title": "Emdash vs OpenHands", "url": "https://www.anchorterminal.com/compare/emdash-vs-openhands" }, { "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/gemini-cli-vs-openhands.json", "title": "Gemini CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-openhands" }, { "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/github-copilot-cli-vs-openhands.json", "title": "GitHub Copilot CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-openhands" }, { "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/goose-vs-openhands.json", "title": "goose vs OpenHands", "url": "https://www.anchorterminal.com/compare/goose-vs-openhands" }, { "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/harness2-vs-openhands.json", "title": "Harness² vs OpenHands", "url": "https://www.anchorterminal.com/compare/harness2-vs-openhands" }, { "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/harnessrouter-vs-openhands.json", "title": "HarnessRouter vs OpenHands", "url": "https://www.anchorterminal.com/compare/harnessrouter-vs-openhands" }, { "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/jules-vs-openhands.json", "title": "Jules vs OpenHands", "url": "https://www.anchorterminal.com/compare/jules-vs-openhands" }, { "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/junie-vs-openhands.json", "title": "Junie CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/junie-vs-openhands" }, { "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/kilo-code-cli-vs-openhands.json", "title": "Kilo Code CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/kilo-code-cli-vs-openhands" }, { "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/kimi-code-cli-vs-openhands.json", "title": "Kimi Code CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/kimi-code-cli-vs-openhands" }, { "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/kiro-cli-vs-openhands.json", "title": "Kiro CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/kiro-cli-vs-openhands" }, { "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-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/mini-swe-agent-vs-openhands.json", "title": "mini-swe-agent vs OpenHands", "url": "https://www.anchorterminal.com/compare/mini-swe-agent-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/minimax-code-vs-openhands.json", "title": "MiniMax Code vs OpenHands", "url": "https://www.anchorterminal.com/compare/minimax-code-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openhands.json", "title": "Mistral Vibe CLI vs OpenHands", "url": "https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/muse-code-vs-openhands.json", "title": "Muse Code vs OpenHands", "url": "https://www.anchorterminal.com/compare/muse-code-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/openai-agents-api-vs-openhands.json", "title": "OpenAI Agents API vs OpenHands", "url": "https://www.anchorterminal.com/compare/openai-agents-api-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/openai-codex-vs-openhands.json", "title": "OpenAI Codex vs OpenHands", "url": "https://www.anchorterminal.com/compare/openai-codex-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-openhands.json", "title": "OpenCode vs OpenHands", "url": "https://www.anchorterminal.com/compare/opencode-vs-openhands" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-openmausbot.json", "title": "OpenHands vs OpenMausBot", "url": "https://www.anchorterminal.com/compare/openhands-vs-openmausbot" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-orca.json", "title": "OpenHands vs Orca", "url": "https://www.anchorterminal.com/compare/openhands-vs-orca" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-paseo.json", "title": "OpenHands vs Paseo", "url": "https://www.anchorterminal.com/compare/openhands-vs-paseo" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-prime-agent.json", "title": "OpenHands vs Prime Agent", "url": "https://www.anchorterminal.com/compare/openhands-vs-prime-agent" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-qoder-cli.json", "title": "OpenHands vs Qoder CLI", "url": "https://www.anchorterminal.com/compare/openhands-vs-qoder-cli" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-qwen-code.json", "title": "OpenHands vs Qwen Code", "url": "https://www.anchorterminal.com/compare/openhands-vs-qwen-code" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-reflection-mirror.json", "title": "OpenHands vs Mirror CLI", "url": "https://www.anchorterminal.com/compare/openhands-vs-reflection-mirror" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-rovo-dev-cli.json", "title": "OpenHands vs Rovo Dev CLI", "url": "https://www.anchorterminal.com/compare/openhands-vs-rovo-dev-cli" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-sculptor.json", "title": "OpenHands vs Sculptor", "url": "https://www.anchorterminal.com/compare/openhands-vs-sculptor" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-t3-code.json", "title": "OpenHands vs T3 Code", "url": "https://www.anchorterminal.com/compare/openhands-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-traycer.json", "title": "OpenHands vs Traycer", "url": "https://www.anchorterminal.com/compare/openhands-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-unstoppable.json", "title": "OpenHands vs Unstoppable", "url": "https://www.anchorterminal.com/compare/openhands-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-verdent.json", "title": "OpenHands vs Verdent", "url": "https://www.anchorterminal.com/compare/openhands-vs-verdent" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-vibe-trading.json", "title": "OpenHands vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/openhands-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-warp.json", "title": "OpenHands vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/openhands-vs-warp" }, { "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/clawboo-vs-openhands.json", "title": "Clawboo vs OpenHands", "url": "https://www.anchorterminal.com/compare/clawboo-vs-openhands" }, { "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/cli-manager-vs-openhands.json", "title": "CLI Manager vs OpenHands", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-openhands" }, { "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/harness-autonomous-vs-openhands.json", "title": "Harness vs OpenHands", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-openhands" }, { "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" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-paperclip.json", "title": "OpenHands vs Paperclip", "url": "https://www.anchorterminal.com/compare/openhands-vs-paperclip" }, { "json": "https://www.anchorterminal.com/compare/openhands-vs-parallax-agents.json", "title": "OpenHands vs Parallax", "url": "https://www.anchorterminal.com/compare/openhands-vs-parallax-agents" } ], "panel": null, "scores": [ { "by": 32, "edge": "openhands", "key": "reliability", "letta": 58, "name": "Reliability", "openhands": 90, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 20, "edge": "openhands", "key": "schema", "letta": 70, "name": "Schema \u0026 documentation", "openhands": 90, "weight": 13 }, { "by": 11, "edge": "openhands", "key": "ergonomics", "letta": 67, "name": "Agent ergonomics", "openhands": 78, "weight": 13 }, { "by": 29, "edge": "openhands", "key": "security", "letta": 35, "name": "Security \u0026 auth", "openhands": 64, "weight": 14 }, { "by": 0, "edge": "", "key": "payments", "letta": 60, "name": "Payments \u0026 pricing", "openhands": 60, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 0, "edge": "", "key": "maintenance", "letta": 85, "name": "Maintenance \u0026 community", "openhands": 85, "weight": 7 }, { "by": 12, "edge": "openhands", "key": "transparency", "letta": 55, "name": "Transparency \u0026 trust", "openhands": 67, "weight": 7 } ], "summary": "OpenHands scores 70.3 (BB) on agent readiness against Letta's 59.7 (C), and leads in 5 of 7 scored categories. Both do agent harnesses.", "tasks": null, "tutorials": [], "verdicts": { "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.", "openhands": "A self-hosted coding agent with a typed SDK, an Agent Server API and a Docker container per conversation on request. Agent Canvas still starts with confirmation off on the host's filesystem, sends an install event before asking consent, and a critical SDK sandbox flaw fixed in October was published by a third party." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/letta-vs-openhands", "json": "https://www.anchorterminal.com/compare/letta-vs-openhands.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/letta-vs-openhands.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/letta-vs-openhands.min.md" }, "markdown": "OpenHands scores 70.3 (BB) on agent readiness against Letta's 59.7 (C), and leads in 5 of 7 scored categories. Both do agent harnesses.\n\n- Letta: grade C, 59.7/100, rank #684 of 1486. Markdown https://www.anchorterminal.com/tools/letta.md · JSON https://www.anchorterminal.com/api/v1/tools/letta.json\n- OpenHands: grade BB, 70.3/100, rank #206 of 1486. Markdown https://www.anchorterminal.com/tools/openhands.md · JSON https://www.anchorterminal.com/api/v1/tools/openhands.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### Letta (C)\n\nGood for: Long-lived coding agents and assistants that keep memory and identity across sessions and machines.\n\nAlso in its favour:\n- Runs on your own machine\n- No incidents deducted, where OpenHands loses 7 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### OpenHands (BB)\n\nGood for: Teams that want to self-host a coding agent with a web UI, per-conversation Docker sandboxes and scheduled or webhook automations, or embed the agent through a Python SDK and REST API.\n\nAhead on:\n- Reliability, 90 against 58\n- Schema \u0026 documentation, 90 against 70\n- Agent ergonomics, 78 against 67\n- Security \u0026 auth, 64 against 35\n- Transparency \u0026 trust, 67 against 55\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n\nWatch for: Confirmation mode is off by default in Agent Canvas, and the npm install gives the agent the host's whole filesystem\n\n\n## Why the edge\n\n### Reliability: OpenHands +32\n\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- OpenHands (90): Read as a local package. Official npm package @openhands/agent-canvas (Node 24 or later, plus uv), a Docker image on GHCR and openhands-sdk on PyPI (Python 3.12 or later) (20). A CI workflow (ci.yml) runs on main beside desktop, Docker and end-to-end workflows; the runs passed on every load on 1 October, and GitHub's pages refused us on 1 November, so the award rests on that check (25). 456 open issues and 395 open pull requests with priority labels and a high-priority Cloud resume bug (#17664), per the 1 October check, not re-read on 1 November (18). Dated release notes for every Canvas version and a written SDK rule of at least five minor releases before a public API or REST contract is removed, which the SDK followed on 28 October when it dropped the ACP curated model lists at their stated 1.59.0 deadline, but the Canvas CHANGELOG.md still stops at 1.0.0-alpha.2 (12). Canvas is 1.34.0 and the SDK 1.59.0, and the README's beta badge was removed on 23 October 2026 (commit 4d1c4d1, noted in the 1.33.0 release notes), so the product is no longer labelled beta. Only the Apps extension API keeps a beta label (15).\n\n### Security \u0026 auth: OpenHands +29\n\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- OpenHands (64): Harness reading of the framework checklist, as for goose and the other agent harnesses. 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. Agent Canvas still sends a `canvas_install` event to PostHog through z.openhands.dev on first use \"regardless of consent\" (telemetry.ts header, re-read on 1 November), and the consent banner's box is still `defaultChecked`. `AGENT_CANVAS_DISABLE_TELEMETRY=1`, `--disable-telemetry`, `VITE_DO_NOT_TRACK=1` or the browser's Do Not Track setting stops all of it, the last since 1.26.0 (15). Confirmation policies (always, never, at or above a risk level) and a Docker sandbox per conversation exist, but Canvas still starts with `confirmation_mode: false` and the npm install runs on the host with full filesystem access. No network egress controls found. Local listeners bind to 127.0.0.1 with an injected session key, and since SDK 1.52.0 (5 October) DockerWorkspace publishes its ports on loopback (12). LLM, Invariant and GraySwan risk analysers and a policy-rail module, documented, all advisory (11). Conversation event logs, completion logs and OpenTelemetry tracing through Laminar, with hosted Laminar setup documented on 16 October (13). Security programme. openhands.dev's security.txt expired on 28 October 2026 (re-read on 1 November), though the responsible-disclosure policy it names still loads. A Vanta-hosted trust page per the 1 October check, and the git diff injection published as an OpenHands advisory with a CVE. CVE-2026-112346, the SDK's unauthenticated sandbox server, was published by VulnCheck on 26 October with no OpenHands advisory found. No bug bounty found. 13, down from 15 for the expired file, read as shopware's and tokeneconomizer's expired files are (still credited for the policy behind them, less than a valid file).\n\n### Schema \u0026 documentation: OpenHands +20\n\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- OpenHands (90): The Agent Server REST API has an OpenAPI 3.1 spec in the docs repository (40 paths, still labelled 0.1.0), the Cloud API has another (155 paths), SDK models are Pydantic-typed and there's a TypeScript client (25). llms.txt at docs.openhands.dev (551 lines on 1 November), with no CLI, local GUI or V0 pages in it (10). The docs have a when-to-use page and examples of good and bad task instructions. On 23 October the Deprecated Projects group (local GUI, CLI, V0) was taken out of the navigation and links to it reworded towards Agent Canvas, though the pages stay reachable by URL and the SDK architecture page still links the CLI repository (15). Confirmation policies, security analysers and MCP configs are discriminated Pydantic unions with validators (13). SDK examples are checked by a CI workflow and there are troubleshooting pages, but we found no error reference for the Agent Server (12). Dated release notes for each Canvas version in the docs (1.25.0 to 1.34.0 added since 1 October), and release tags (15).\n\n### Transparency \u0026 trust: OpenHands +12\n\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- OpenHands (67): MIT across Canvas, SDK, tools and Agent Server (30). The privacy policy (effective 3 September 2025, re-read on 1 November) doesn't separate the open-source stack from the Cloud service, keeps data as long as reasonably necessary, allows training on content from the Services and has no subprocessor list (12). A written SDK deprecation runway of five minor releases, kept on 28 October when the ACP model lists were removed at their 1.59.0 deadline, and the CLI's unmaintained notice in its README without a date on the page (15). The consent prompt calls the data anonymous and the Docker page documents `AGENT_CANVAS_DISABLE_TELEMETRY`, but no user-facing page mentions the install event sent before consent (10).\n\n### Agent ergonomics: OpenHands +11\n\n- Letta (67): Harness reading. Toolsets switch with `/model`, skills load per agent, and subagents run in the background (18 of 25). Context is managed through memory blocks, reflection and dreaming (12 of 20). `letta -p --output-format json` for scripted runs and an App Server for programmatic control (12 of 20). Conversations resume by agent and conversation id, and memory is git-tracked so changes can be reverted (15 of 20). Runs with no account on the local backend, with one SDK language, TypeScript (10 of 15). Total 67.\n- OpenHands (78): Harness reading of the framework line, scored on what an agent or pipeline driving it has to supply. The default agent carries three tools (terminal, file editor, task tracker), and `filter_tools_regex` trims MCP tools before they reach the model (23). Stuck detection is on by default and a condenser compacts long histories, but Canvas leaves `max_iterations` unset and we found no cost cap (15). Headless runs go through the SDK, the Agent Server REST API or the Cloud API with typed events, and the old CLI's `--headless` mode is unmaintained (14). Conversations persist and resume, and a Docker conversation keeps its workspace and history when the container is replaced (16). Python SDK and TypeScript client, but the quickstart needs Node 24 and uv, and the defaults skip both confirmation and the sandbox (10).\n\n## Score by category\n\n| Category | Weight | Letta | OpenHands | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 58 | 90 | OpenHands +32 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 70 | 90 | OpenHands +20 |\n| Agent ergonomics | 13% (16.2 this run) | 67 | 78 | OpenHands +11 |\n| Security \u0026 auth | 14% (17.5 this run) | 35 | 64 | OpenHands +29 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 60 | even |\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) | 55 | 67 | OpenHands +12 |\n| Negative events | ≤15 | 0 | -7 | |\n| **Total** | | **59.7 · C** | **70.3 · BB** | |\n\n## Facts side by side\n\n| Fact | Letta | OpenHands |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Letta | All Hands AI |\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 | MIT (Agent Canvas, SDK, tools and Agent Server). OpenHands Cloud is a hosted service |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-11-06 | 2026-10-28 |\n| Terms last updated | no date given | no document linked |\n| Privacy policy last updated | no date given | 2025-09-03 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | not found in the text | not read yet |\n| Terms restrict benchmarking | not found in the text | not read yet |\n| Terms or service can change without notice | not found in the text | not read yet |\n| Arbitration or class-action waiver | yes | not read yet |\n| Popularity | 3.8k stars, 86k npm/wk, 2.2k PyPI/wk | 90k stars |\n| Agent reviews | none | 2.5/5 (2) |\n\n## How the scores have moved\n\n### Letta\n\nNo score change since it was listed.\n\n### OpenHands\n\n- -0.7 on 1 November 2026: security, product\n- +0.2 on 27 October 2026: checklist\n- -0.1 on 8 October 2026: checklist\n\n## Verdicts\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**OpenHands.** A self-hosted coding agent with a typed SDK, an Agent Server API and a Docker container per conversation on request. Agent Canvas still starts with confirmation off on the host's filesystem, sends an install event before asking consent, and a critical SDK sandbox flaw fixed in October was published by a third party.\n\n## Before you call either\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### OpenHands\n\n1. Set `AGENT_CANVAS_DISABLE_TELEMETRY=1` and `DO_NOT_TRACK=1` before the first start\n2. Start Canvas with `OH_CONVERSATION_RUNTIME=docker` or use the Docker image. The npm install runs the agent on the host\n3. Turn on confirmation mode with a risk threshold. Canvas starts with it off\n4. Pin openhands-sdk and openhands-workspace at 1.52.0 or later so DockerWorkspace binds to loopback, and set `OH_SESSION_API_KEYS_0` on any reachable Agent Server\n5. Use the SDK or the Agent Server API for headless runs. The `openhands --headless` CLI is no longer maintained\n\n## Questions\n\n### Which is better for AI agents, Letta or OpenHands?\n\nOpenHands scores 70.3 (BB) on agent readiness against Letta's 59.7 (C), and leads in 5 of 7 scored categories.\n\n### Are Letta and OpenHands open source?\n\nYes. Letta is open source (Apache-2.0). OpenHands is open source (MIT (Agent Canvas, SDK, tools and Agent Server). OpenHands Cloud is a hosted service).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/letta-vs-openhands.json, and with the fewest tokens: https://www.anchorterminal.com/compare/letta-vs-openhands.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"letta\", \"b\": \"openhands\"}`. From a terminal: `anchor compare letta openhands`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/letta.json and https://www.anchorterminal.com/api/v1/tools/openhands.json\n\n## Other comparisons with Letta or OpenHands\n\n- [Agent Zero vs Letta](https://www.anchorterminal.com/compare/agent-zero-vs-letta.md)\n- [Agent Zero vs OpenHands](https://www.anchorterminal.com/compare/agent-zero-vs-openhands.md)\n- [Aider vs Letta](https://www.anchorterminal.com/compare/aider-vs-letta.md)\n- [Aider vs OpenHands](https://www.anchorterminal.com/compare/aider-vs-openhands.md)\n- [Amp vs Letta](https://www.anchorterminal.com/compare/amp-vs-letta.md)\n- [Amp vs OpenHands](https://www.anchorterminal.com/compare/amp-vs-openhands.md)\n- [Antigravity CLI vs Letta](https://www.anchorterminal.com/compare/antigravity-cli-vs-letta.md)\n- [Antigravity CLI vs OpenHands](https://www.anchorterminal.com/compare/antigravity-cli-vs-openhands.md)\n- [Auggie CLI vs Letta](https://www.anchorterminal.com/compare/auggie-vs-letta.md)\n- [Auggie CLI vs OpenHands](https://www.anchorterminal.com/compare/auggie-vs-openhands.md)\n- [AXLR vs Letta](https://www.anchorterminal.com/compare/axlr-vs-letta.md)\n- [AXLR vs OpenHands](https://www.anchorterminal.com/compare/axlr-vs-openhands.md)\n- [Claude Code vs Letta](https://www.anchorterminal.com/compare/claude-code-vs-letta.md)\n- [Claude Code vs OpenHands](https://www.anchorterminal.com/compare/claude-code-vs-openhands.md)\n- [Cline vs Letta](https://www.anchorterminal.com/compare/cline-vs-letta.md)\n- [Cline vs OpenHands](https://www.anchorterminal.com/compare/cline-vs-openhands.md)\n- [Conductor vs Letta](https://www.anchorterminal.com/compare/conductor-vs-letta.md)\n- [Conductor vs OpenHands](https://www.anchorterminal.com/compare/conductor-vs-openhands.md)\n- [Crush vs Letta](https://www.anchorterminal.com/compare/crush-vs-letta.md)\n- [Crush vs OpenHands](https://www.anchorterminal.com/compare/crush-vs-openhands.md)\n- [Cursor CLI vs Letta](https://www.anchorterminal.com/compare/cursor-cli-vs-letta.md)\n- [Cursor CLI vs OpenHands](https://www.anchorterminal.com/compare/cursor-cli-vs-openhands.md)\n- [DeepSeek Harness (dsh) vs Letta](https://www.anchorterminal.com/compare/deepseek-harness-vs-letta.md)\n- [DeepSeek Harness (dsh) vs OpenHands](https://www.anchorterminal.com/compare/deepseek-harness-vs-openhands.md)\n- [dsh-superagent (DeepSeek) vs Letta](https://www.anchorterminal.com/compare/deepseek-superagent-vs-letta.md)\n- [dsh-superagent (DeepSeek) vs OpenHands](https://www.anchorterminal.com/compare/deepseek-superagent-vs-openhands.md)\n- [Devin vs Letta](https://www.anchorterminal.com/compare/devin-vs-letta.md)\n- [Devin vs OpenHands](https://www.anchorterminal.com/compare/devin-vs-openhands.md)\n- [Droid CLI vs Letta](https://www.anchorterminal.com/compare/droid-cli-vs-letta.md)\n- [Droid CLI vs OpenHands](https://www.anchorterminal.com/compare/droid-cli-vs-openhands.md)\n- [Pi vs Letta](https://www.anchorterminal.com/compare/earendil-pi-vs-letta.md)\n- [Pi vs OpenHands](https://www.anchorterminal.com/compare/earendil-pi-vs-openhands.md)\n- [Emdash vs Letta](https://www.anchorterminal.com/compare/emdash-vs-letta.md)\n- [Emdash vs OpenHands](https://www.anchorterminal.com/compare/emdash-vs-openhands.md)\n- [Gemini CLI vs Letta](https://www.anchorterminal.com/compare/gemini-cli-vs-letta.md)\n- [Gemini CLI vs OpenHands](https://www.anchorterminal.com/compare/gemini-cli-vs-openhands.md)\n- [GitHub Copilot CLI vs Letta](https://www.anchorterminal.com/compare/github-copilot-cli-vs-letta.md)\n- [GitHub Copilot CLI vs OpenHands](https://www.anchorterminal.com/compare/github-copilot-cli-vs-openhands.md)\n- [goose vs Letta](https://www.anchorterminal.com/compare/goose-vs-letta.md)\n- [goose vs OpenHands](https://www.anchorterminal.com/compare/goose-vs-openhands.md)\n- [Harness² vs Letta](https://www.anchorterminal.com/compare/harness2-vs-letta.md)\n- [Harness² vs OpenHands](https://www.anchorterminal.com/compare/harness2-vs-openhands.md)\n- [HarnessRouter vs Letta](https://www.anchorterminal.com/compare/harnessrouter-vs-letta.md)\n- [HarnessRouter vs OpenHands](https://www.anchorterminal.com/compare/harnessrouter-vs-openhands.md)\n- [Jules vs Letta](https://www.anchorterminal.com/compare/jules-vs-letta.md)\n- [Jules vs OpenHands](https://www.anchorterminal.com/compare/jules-vs-openhands.md)\n- [Junie CLI vs Letta](https://www.anchorterminal.com/compare/junie-vs-letta.md)\n- [Junie CLI vs OpenHands](https://www.anchorterminal.com/compare/junie-vs-openhands.md)\n- [Kilo Code CLI vs Letta](https://www.anchorterminal.com/compare/kilo-code-cli-vs-letta.md)\n- [Kilo Code CLI vs OpenHands](https://www.anchorterminal.com/compare/kilo-code-cli-vs-openhands.md)\n- [Kimi Code CLI vs Letta](https://www.anchorterminal.com/compare/kimi-code-cli-vs-letta.md)\n- [Kimi Code CLI vs OpenHands](https://www.anchorterminal.com/compare/kimi-code-cli-vs-openhands.md)\n- [Kiro CLI vs Letta](https://www.anchorterminal.com/compare/kiro-cli-vs-letta.md)\n- [Kiro CLI vs OpenHands](https://www.anchorterminal.com/compare/kiro-cli-vs-openhands.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 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- [mini-swe-agent vs OpenHands](https://www.anchorterminal.com/compare/mini-swe-agent-vs-openhands.md)\n- [MiniMax Code vs OpenHands](https://www.anchorterminal.com/compare/minimax-code-vs-openhands.md)\n- [Mistral Vibe CLI vs OpenHands](https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openhands.md)\n- [Muse Code vs OpenHands](https://www.anchorterminal.com/compare/muse-code-vs-openhands.md)\n- [OpenAI Agents API vs OpenHands](https://www.anchorterminal.com/compare/openai-agents-api-vs-openhands.md)\n- [OpenAI Codex vs OpenHands](https://www.anchorterminal.com/compare/openai-codex-vs-openhands.md)\n- [OpenCode vs OpenHands](https://www.anchorterminal.com/compare/opencode-vs-openhands.md)\n- [OpenHands vs OpenMausBot](https://www.anchorterminal.com/compare/openhands-vs-openmausbot.md)\n- [OpenHands vs Orca](https://www.anchorterminal.com/compare/openhands-vs-orca.md)\n- [OpenHands vs Paseo](https://www.anchorterminal.com/compare/openhands-vs-paseo.md)\n- [OpenHands vs Prime Agent](https://www.anchorterminal.com/compare/openhands-vs-prime-agent.md)\n- [OpenHands vs Qoder CLI](https://www.anchorterminal.com/compare/openhands-vs-qoder-cli.md)\n- [OpenHands vs Qwen Code](https://www.anchorterminal.com/compare/openhands-vs-qwen-code.md)\n- [OpenHands vs Mirror CLI](https://www.anchorterminal.com/compare/openhands-vs-reflection-mirror.md)\n- [OpenHands vs Rovo Dev CLI](https://www.anchorterminal.com/compare/openhands-vs-rovo-dev-cli.md)\n- [OpenHands vs Sculptor](https://www.anchorterminal.com/compare/openhands-vs-sculptor.md)\n- [OpenHands vs T3 Code](https://www.anchorterminal.com/compare/openhands-vs-t3-code.md)\n- [OpenHands vs Traycer](https://www.anchorterminal.com/compare/openhands-vs-traycer.md)\n- [OpenHands vs Unstoppable](https://www.anchorterminal.com/compare/openhands-vs-unstoppable.md)\n- [OpenHands vs Verdent](https://www.anchorterminal.com/compare/openhands-vs-verdent.md)\n- [OpenHands vs Vibe-Trading](https://www.anchorterminal.com/compare/openhands-vs-vibe-trading.md)\n- [OpenHands vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/openhands-vs-warp.md)\n- [Clawboo vs Letta](https://www.anchorterminal.com/compare/clawboo-vs-letta.md)\n- [Clawboo vs OpenHands](https://www.anchorterminal.com/compare/clawboo-vs-openhands.md)\n- [CLI Manager vs Letta](https://www.anchorterminal.com/compare/cli-manager-vs-letta.md)\n- [CLI Manager vs OpenHands](https://www.anchorterminal.com/compare/cli-manager-vs-openhands.md)\n- [Harness vs Letta](https://www.anchorterminal.com/compare/harness-autonomous-vs-letta.md)\n- [Harness vs OpenHands](https://www.anchorterminal.com/compare/harness-autonomous-vs-openhands.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- [OpenHands vs Paperclip](https://www.anchorterminal.com/compare/openhands-vs-paperclip.md)\n- [OpenHands vs Parallax](https://www.anchorterminal.com/compare/openhands-vs-parallax-agents.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Letta vs OpenHands", "url": "" } ], "description": "OpenHands scores 70.3 (BB) to Letta's 59.7 (C) for agent harnesses. 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