{ "data": { "a": { "slug": "junie", "name": "Junie CLI", "vendor": "JetBrains", "vendorUrl": "https://junie.jetbrains.com", "kind": "harness", "category": "agent-harnesses", "summary": "JetBrains' coding agent for the terminal, run as `junie`. It plans, edits files, runs commands and calls MCP servers, with an action allowlist, one-shot headless runs with JSON output for CI and an ACP mode for editors.", "url": "https://www.anchorterminal.com/tools/junie", "markdownUrl": "https://www.anchorterminal.com/tools/junie.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/junie.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/junie.json", "dns": "junie.grade.anchorterminal.com", "repo": "https://github.com/JetBrains/junie", "license": "Proprietary, JetBrains s.r.o., all rights reserved, under the JetBrains AI Terms of Service. The GitHub repository holds the README, release binaries and the issue tracker, not source", "transports": [], "packages": [ { "registry": "npm", "name": "@jetbrains/junie" } ], "auth": "mixed", "authNotes": "A JetBrains Account through a browser, a Junie API key (`JUNIE_API_KEY` or `--auth`) created at junie.jetbrains.com/cli for headless runs, or BYOK provider keys and custom endpoints, which need no JetBrains AI subscription.", "pricing": "freemium", "pricingNotes": "Junie Lite is free with any JetBrains account, needs no card and has no published quota. JetBrains AI Pro is $10 a month ($100 a year) with 10 AI Credits and AI Ultimate $30 a month ($300 a year) with 35, where one credit is US$1. BYOK use is billed by the provider with no JetBrains markup. Per-model credit rates weren't found (checked 2026-10-18).", "priceSummary": "$10 / mo", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Junie docs, the JetBrains AI terms or the pricing on junie.jetbrains.com (checked 2026-10-18).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 3153, "pypiWeekly": null, "asOf": "2026-10-18" }, "docsUrl": "https://junie.jetbrains.com/docs/junie-cli.html", "llmsTxt": "https://junie.jetbrains.com/llms.txt", "capabilities": [ "agent.harness", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "official", "harness", "coding-agent", "cli", "closed-source", "mcp", "acp", "llms-txt", "free-tier", "no-card", "hooks", "subagents" ], "lastRelease": "2026-11-03", "graded": true, "anchor": { "graded": true, "score": 49, "grade": "D", "agentReady": false, "rank": 1099, "ranked": true, "rankOf": 1486, "categoryRank": 44, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 64, "payments": 42, "reliability": 33, "schema": 62, "security": 56, "transparency": 77 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-04" }, "negative": -4, "negativeNotes": [ "2026-10-15. CVE-2026-111091, high (CVSS 3.1 7.8, CWE-829), published by JetBrains. Code execution was possible through an untrusted project's MCP server configuration in Junie CLI before 26.8.3. Fixed and published, under two months old (https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/111xxx/CVE-2026-111091.json). -2", "2026-10-27. CVE-2026-117530, medium (CVSS 3.1 6.7, CWE-184), published by JetBrains. Command execution was possible through incomplete validation of allowlisted commands in Junie CLI before 26.8.17. Fixed and published by the vendor (https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/117xxx/CVE-2026-117530.json). -1", "2026-04-17. CVE-2026-41153, medium (CVSS 3.1 5.8), published by JetBrains. Command execution through a malicious project file in JetBrains Junie before 252.549.29, a plugin build number. Judgement call, 1 point, since the IDE plugin and the CLI run the same agent per JetBrains' 17 June 2026 post. Fixed and published (https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/41xxx/CVE-2026-41153.json). -1" ], "verdict": "Runs headless with JSON output, speaks ACP, and works with JetBrains AI plans, a free Junie Lite tier, the owner's own provider keys or a local endpoint. Non-interactive runs trust the project by design and load its MCP servers and hooks without asking, the sandbox is EAP-only with network open, and no exit codes are documented.", "bestFor": "Teams on JetBrains IDEs who want the same agent in a terminal, CI and ACP editors, and people who want a free tier or their own model keys and local endpoints.", "strengths": [ "An action allowlist that asks before terminal commands, MCP tools, outside edits and secret-file reads, and checks each part of chained and nested commands", "Headless runs with text, json or json-stream output, piped JSON input, `--session-id` and `--resume`", "ACP mode (`junie --acp true`) for editors, plus a GitHub Action and GitLab CI integration", "Junie Lite is a free model tier with no card, and BYOK keys or a local endpoint avoid JetBrains billing", "Install scripts check SHA-256 sums from a published release feed, and releases ship weekly" ], "weaknesses": [ "One-shot, piped, ACP and Gateway runs trust the project by design and load its MCP servers, hooks, agents and skills without a prompt", "Sandbox mode is EAP-only, off by default, absent on Windows, and leaves network access open by default", "No documented exit codes, output schema or turn and spend cap for headless runs", "CVE-2026-111091 (high, 15 October 2026) and CVE-2026-117530 (medium, 27 October 2026) allowed code and command execution through project MCP configuration and allowlisted commands", "Closed source, and the CLI's default for anonymous usage statistics isn't stated" ], "agentNotes": [ "Run headless only in repositories you trust. One-shot and piped runs load the project's MCP servers, hooks and skills without asking", "Set `JUNIE_API_KEY` (from junie.jetbrains.com/cli) or a provider key such as `JUNIE_ANTHROPIC_API_KEY` in CI. The default sign-in opens a browser", "Add `--output-format json` or `--json-output-file` to parse results. Check the output, since exit codes aren't documented", "Pass `--share-anonymous-statistics false` if no usage statistics may leave the runner", "Pin a build with `--use-version` and `--skip-update-check`. The CLI updates itself on start by default" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 2.8, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 49 } ], "editorialScores": { "ergonomics": 55, "maintenance": 64, "payments": 42, "reliability": 33, "schema": 62, "security": 56, "transparency": 57 }, "provenanceScore": 97, "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": "curl -fsSL https://junie.jetbrains.com/install.sh | bash", "headless": { "acp": "junie --acp true", "review": "junie --auth=\"$JUNIE_API_KEY\" --review", "run": "junie --auth=\"$JUNIE_API_KEY\" \"Fix any failing tests\"" } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/junie" }, "sameCompany": [ "youtrack" ], "area": "frameworks", "unitPrices": [ { "item": "JetBrains AI Pro", "unit": "month", "usd": 10, "note": "per user, 10 AI Credits every 30 days, $100 a year" }, { "item": "JetBrains AI Ultimate", "unit": "month", "usd": 30, "note": "per user, 35 AI Credits every 30 days, $300 a year" } ], "provenance": { "legalEntity": "JetBrains s.r.o.", "domain": "jetbrains.com", "domainRegistered": "2001-11-09", "endpointOnVendorDomain": null, "terms": "https://www.jetbrains.com/legal/docs/terms/jetbrains-ai-service/", "privacy": "https://www.jetbrains.com/legal/docs/privacy/privacy/", "statusPage": "https://status.jetbrains.cloud", "changelog": "https://junie.jetbrains.com/whats-new", "securityTxt": "valid", "checked": "2026-11-04", "notes": [ "The README says JetBrains s.r.o., all rights reserved, with use under the JetBrains AI Terms of Service (version 2.1, effective 30 September 2025, titled for AI Assistant and Junie).", "www.jetbrains.com/.well-known/security.txt has a Contact and a Policy line and no Expires line, which RFC 9116 requires. The site's tracker reads a file with a Contact and no Expires as valid. junie.jetbrains.com/.well-known/security.txt answers 404.", "The CLI runs on the owner's machine. Model calls go to JetBrains AI, the owner's provider or a local endpoint, so there is no single vendor endpoint.", "The registration date is carried from the earlier listing and wasn't looked up again. Junie's site is junie.jetbrains.com.", "status.jetbrains.cloud covers JetBrains AI. Its components and incidents were read on 2026-10-18 from a JSON API this run doesn't use, so they aren't relied on, and JetBrains' website terms (version 2.5, 28 November 2023) bar robots and data mining on every JetBrains site, so it wasn't re-read.", "JetBrains' Website Terms of Use cover every site under the domains JetBrains lists, so its pages are paused pending the founder; its GitHub repositories are read from clones." ], "score": 97 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/junie.json", "live": { "slug": "junie", "vendorStatus": { "page": "https://status.jetbrains.cloud", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:18.35254862Z" }, "versions": [ { "registry": "github", "name": "JetBrains/junie", "version": "4040.1", "released": "2026-11-06", "seenAt": "2026-11-06T23:36:13.78475433Z" }, { "registry": "npm", "name": "@jetbrains/junie", "version": "3110.7.0", "seenAt": "2026-11-06T23:36:13.561699806Z" } ], "githubStars": 544, "npmWeekly": 7037, "securityTxt": { "url": "https://jetbrains.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-11-07T16:00:45.129912604Z" }, "llmsTxt": { "url": "https://junie.jetbrains.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:48.182444941Z" }, "domain": { "domain": "jetbrains.com", "registered": "2001-11-09", "source": "https://rdap.verisign.com/com/v1/domain/jetbrains.com", "checkedAt": "2026-11-01T14:07:20.014771665Z" }, "pages": [ { "url": "https://junie.jetbrains.com/whats-new", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:11:49.572643963Z", "changedAt": "2026-11-04T08:25:47.158034938Z", "fingerprint": "af4a365b540d" }, { "url": "https://www.jetbrains.com/legal/docs/privacy/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:30:22.908152335Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7d6c9c28b6d6" }, { "url": "https://www.jetbrains.com/legal/docs/terms/jetbrains-ai-service/", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:30:24.932957221Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c56282bd3350" } ], "github": { "repo": "jetbrains/junie", "checkedAt": "2026-11-02T08:57:19.655674548Z", "stars": 522, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T08:55:24Z", "openIssues": 6, "openPRs": 8, "issuesOpened90d": 20, "issuesClosed90d": 67, "prsMerged90d": 22, "replies": { "sampled": 25, "unanswered": 5, "medianDays": 16 } }, "updatedAt": "2026-11-07T18:21:18.35254862Z" } }, "answer": "Letta scores 59.7 (C) on agent readiness against Junie CLI's 49 (D), and leads in 5 of 7 scored categories. Junie CLI leads on 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": 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" } }, "edges": [ { "by": 25, "category": "reliability", "leads": "letta", "name": "Reliability", "reasons": { "a": "Local-package reading, the same as the other closed-source harnesses. Install scripts for macOS, Linux and Windows on x86-64 and ARM64, a Homebrew tap and npm, with SHA-256 sums checked against the release feed (update-info.jsonl, read from a clone on 4 November), but the script carries on without a sum for an unlisted version and npm sat five weeks behind at 3110.7.0 on 18 October (17). No public CI or test suite. No source is published and the repository has no workflow files, per a clone on 4 November (0). Crash and regression line 0. The 18 October counts came from shields.io badges and YouTrack's JSON API, both struck in this run, and no first-hand reading of the GitHub tracker or YouTrack is possible today (github.com pages refused, JetBrains hosts paused). What's New dates every build, but entries are one line and no breaking change is called out, and versions are a date plus a build number, per the 18 October check (6). JetBrains said Junie left Beta on 17 June 2026, but the headless page dated 15 October still calls the CLI an EAP, per the 18 October check (10). 17+0+0+6+10 = 33.", "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": 33, "b": 58 } }, { "by": 22, "category": "transparency", "leads": "junie", "name": "Transparency \u0026 trust", "reasons": { "a": "Proprietary, with clear terms. The JetBrains AI Terms of Service (version 2.1, effective 30 September 2025) name AI Assistant and Junie, though the Junie EAP terms from December 2024 still call Junie a plugin (15). The terms rule out training on inputs without consent and list AI subcontractors with 30 days' notice of new ones (page updated 29 September 2026, naming OpenAI, Google, Anthropic and SpaceXAI for Junie). The AI FAQ says nothing persists unless detailed data collection is on, retained up to a year, and that it's on by default for non-commercial licences. Security monitoring keeps data for an unstated limited period (22). The terms promise 30 days' email notice before JetBrains AI is discontinued, but Junie Lite's model may change without notice and model aliases change without a stated period (10). A per-run override for anonymous statistics is documented, with no stated default and no list of what is sent (10). 15+22+10+10 = 57. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.", "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": 77, "b": 55 } }, { "by": 21, "category": "security", "leads": "junie", "name": "Security \u0026 auth", "reasons": { "a": "Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. A browser login, a long-lived Junie API key with no scopes we found, or provider keys passed as flags or environment variables. The CLI's statistics default isn't stated (13). The allowlist asks before terminal commands, MCP tools, edits outside the project, reads outside it and secret files, and checks every part of chained, nested and multi-line commands. Brave mode is interactive only. Sandbox mode limits writes and hides `~/.ssh`, but it's EAP-only, off by default, missing on Windows, and leaves the network open by default (12). Interactive runs keep an untrusted project's MCP servers, hooks and skills unloaded and a project can't widen the sandbox, but one-shot, piped, ACP and Gateway runs trust every project by design, and the docs say to run them only in trusted projects (9). `/usage` shows per-session cost and sessions are stored, and PreToolUse hooks in batch runs can log or block tools, but they're EAP, and no audit log for the CLI was found (7). A coordinated disclosure policy (updated 10 October 2026) and a security.txt contact, CVEs JetBrains publishes as a CVE numbering authority (three for Junie in cvelistV5) and a fixed-issues page, discretionary rewards with no formal bounty, and SOC 2 per the Junie homepage. The repository has no SECURITY.md, per a clone on 4 November (15). The docs, policy and homepage readings are per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites. 13+12+9+7+15 = 56.", "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": 56, "b": 35 } }, { "by": 21, "category": "maintenance", "leads": "letta", "name": "Maintenance \u0026 community", "reasons": { "a": "Release 26.11.3 (build 3959.5) added to the release feed on 3 November 2026, read from a clone of JetBrains/junie (30). The release channel added 30 builds between 6 August and 3 November, from 2651.3 on 11 August to 3959.5, and the repository has 1,032 tags created in that window, most of them nightly builds (20). Responsiveness 5 of 25. The 18 October counts of the GitHub tracker and YouTrack came from shields.io badges and YouTrack's JSON API, both struck, so what is left is the dated What's New page and a Discord server, per the 18 October check, with replies unread (5). No SDK and no registry entry. The GitHub Action is at v1 and GitLab CI is documented, and ACP is kept current, per the 18 October check (6). Closed source with no workflow files in the repository, so no CI or dependency health to read. The installer checks sums, and npm sat five weeks behind the release feed on 18 October (3). 30+20+5+6+3 = 64.", "b": "v0.34.42 on 6 November 2026 (30). Dozens of releases in 90 days (20). Pull requests are merged daily; recent issues from users have few replies (15 of 25). npm and PyPI packages and the Agent SDK track the releases (12 of 15). Lock files, CI and nightly smoke tests (8 of 10). Total 85." }, "scores": { "a": 64, "b": 85 } }, { "by": 18, "category": "payments", "leads": "letta", "name": "Payments \u0026 pricing", "reasons": { "a": "Harness reading of the published rubric. No payment protocol (0). Plan prices and the US$1 credit are public without a login, but per-model credit rates and Junie API key usage rates weren't found (12). Junie Lite is free with a JetBrains account and no card (20). Judgement call. The docs present BYOK keys and custom endpoints such as Ollama as alternatives to a JetBrains sign-in, so a pipeline holding a provider key needs no JetBrains signup, but the headless page says a token is required and a Junie API key is created by hand at junie.jetbrains.com/cli (10). 0+12+20+10 = 42. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.", "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": 42, "b": 60 } }, { "by": 12, "category": "ergonomics", "leads": "letta", "name": "Agent ergonomics", "reasons": { "a": "Framework reading, adapted to a harness driven by a pipeline. MCP tools can be allowed per server prefix, and default MCP, skill, agent and config locations can each be switched off, with no deferred tool loading found (15). text, json and json-stream output and `--json-output-file`. Remote mode mentions a step limit, but no turn, time or spend cap for a headless run was documented (10). No exit codes. A Stop hook can end a task with a failure status, and StopFailure names the failure category (8). Sessions resume with `--session-id` or `--resume`, and worktrees isolate parallel sessions (14). One command with `--auth` and a dynamically chosen default model, a GitHub Action and GitLab CI, and no SDK (8). 15+10+8+14+8 = 55. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.", "b": "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." }, "scores": { "a": 55, "b": 67 } } ], "facts": [ { "a": "Agent harness", "b": "Agent harness", "name": "Kind" }, { "a": "JetBrains", "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": "Proprietary, JetBrains s.r.o., all rights reserved, under the JetBrains AI Terms of Service. The GitHub repository holds the README, release binaries and the issue tracker, not source", "b": "Apache-2.0", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-11-03", "b": "2026-11-06", "name": "Last release" }, { "a": "2025-09-30", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-06-12", "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": "not found in the text", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "3.2k npm/wk", "b": "3.8k stars, 86k npm/wk, 2.2k PyPI/wk", "name": "Popularity" }, { "a": "2.8/5 (4)", "b": "none", "name": "Agent reviews" } ], "faq": [ { "answer": "Letta scores 59.7 (C) on agent readiness against Junie CLI's 49 (D), and leads in 5 of 7 scored categories. Junie CLI leads on security \u0026 auth and transparency \u0026 trust.", "question": "Which is better for AI agents, Junie CLI or Letta?" }, { "answer": "No open-source release is listed for Junie CLI. Letta is open source (Apache-2.0).", "question": "Are Junie CLI and Letta open source?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 56 against 35", "Transparency \u0026 trust, 77 against 55" ], "also": [ "Free to start without a card" ], "goodFor": "Teams on JetBrains IDEs who want the same agent in a terminal, CI and ACP editors, and people who want a free tier or their own model keys and local endpoints.", "slug": "junie", "watchFor": "One-shot, piped, ACP and Gateway runs trust the project by design and load its MCP servers, hooks, agents and skills without a prompt" }, { "aheadOn": [ "Reliability, 58 against 33", "Schema \u0026 documentation, 70 against 62", "Agent ergonomics, 67 against 55", "Payments \u0026 pricing, 60 against 42", "Maintenance \u0026 community, 85 against 64" ], "also": [ "Runs on your own machine", "Open source", "No incidents deducted, where Junie CLI loses 4 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": { "junie": [ { "causes": [ "security", "correction" ], "date": "2026-11-04", "delta": -4.1, "from": 53.1, "fromGrade": "D", "to": 49, "toGrade": "D" }, { "causes": [ "method" ], "date": "2026-10-30", "delta": -0.1, "from": 53.2, "fromGrade": "D", "to": 53.1, "toGrade": "D" } ], "letta": null }, "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-junie.json", "title": "Agent Zero vs Junie CLI", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-junie" }, { "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": 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"Junie CLI vs T3 Code", "url": "https://www.anchorterminal.com/compare/junie-vs-t3-code" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-traycer.json", "title": "Junie CLI vs Traycer", "url": "https://www.anchorterminal.com/compare/junie-vs-traycer" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-unstoppable.json", "title": "Junie CLI vs Unstoppable", "url": "https://www.anchorterminal.com/compare/junie-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-verdent.json", "title": "Junie CLI vs Verdent", "url": "https://www.anchorterminal.com/compare/junie-vs-verdent" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-vibe-trading.json", "title": "Junie CLI vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/junie-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-warp.json", "title": "Junie CLI vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/junie-vs-warp" }, { "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-junie.json", "title": "Clawboo vs Junie CLI", "url": "https://www.anchorterminal.com/compare/clawboo-vs-junie" }, { "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-junie.json", "title": "CLI Manager vs Junie CLI", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-junie" }, { "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/harness-autonomous-vs-junie.json", "title": "Harness vs Junie CLI", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-junie" }, { "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/junie-vs-paperclip.json", "title": "Junie CLI vs Paperclip", "url": "https://www.anchorterminal.com/compare/junie-vs-paperclip" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-parallax-agents.json", "title": "Junie CLI vs Parallax", "url": "https://www.anchorterminal.com/compare/junie-vs-parallax-agents" }, { "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": 25, "edge": "letta", "junie": 33, "key": "reliability", "letta": 58, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 8, "edge": "letta", "junie": 62, "key": "schema", "letta": 70, "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 12, "edge": "letta", "junie": 55, "key": "ergonomics", "letta": 67, "name": "Agent ergonomics", "weight": 13 }, { "by": 21, "edge": "junie", "junie": 56, "key": "security", "letta": 35, "name": "Security \u0026 auth", "weight": 14 }, { "by": 18, "edge": "letta", "junie": 42, "key": "payments", "letta": 60, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 21, "edge": "letta", "junie": 64, "key": "maintenance", "letta": 85, "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 22, "edge": "junie", "junie": 77, "key": "transparency", "letta": 55, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Letta scores 59.7 (C) on agent readiness against Junie CLI's 49 (D), and leads in 5 of 7 scored categories. Junie CLI leads on security \u0026 auth and transparency \u0026 trust. Both do agent harnesses.", "tasks": null, "tutorials": [], "verdicts": { "junie": "Runs headless with JSON output, speaks ACP, and works with JetBrains AI plans, a free Junie Lite tier, the owner's own provider keys or a local endpoint. Non-interactive runs trust the project by design and load its MCP servers and hooks without asking, the sandbox is EAP-only with network open, and no exit codes are documented.", "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/junie-vs-letta", "json": "https://www.anchorterminal.com/compare/junie-vs-letta.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/junie-vs-letta.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/junie-vs-letta.min.md" }, "markdown": "Letta scores 59.7 (C) on agent readiness against Junie CLI's 49 (D), and leads in 5 of 7 scored categories. Junie CLI leads on security \u0026 auth and transparency \u0026 trust. Both do agent harnesses.\n\n- Junie CLI: grade D, 49/100, rank #1099 of 1486. Markdown https://www.anchorterminal.com/tools/junie.md · JSON https://www.anchorterminal.com/api/v1/tools/junie.json\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- 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### Junie CLI (D)\n\nGood for: Teams on JetBrains IDEs who want the same agent in a terminal, CI and ACP editors, and people who want a free tier or their own model keys and local endpoints.\n\nAhead on:\n- Security \u0026 auth, 56 against 35\n- Transparency \u0026 trust, 77 against 55\n\nAlso in its favour:\n- Free to start without a card\n\nWatch for: One-shot, piped, ACP and Gateway runs trust the project by design and load its MCP servers, hooks, agents and skills without a prompt\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- Reliability, 58 against 33\n- Schema \u0026 documentation, 70 against 62\n- Agent ergonomics, 67 against 55\n- Payments \u0026 pricing, 60 against 42\n- Maintenance \u0026 community, 85 against 64\n\nAlso in its favour:\n- Runs on your own machine\n- Open source\n- No incidents deducted, where Junie CLI loses 4 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### Reliability: Letta +25\n\n- Junie CLI (33): Local-package reading, the same as the other closed-source harnesses. Install scripts for macOS, Linux and Windows on x86-64 and ARM64, a Homebrew tap and npm, with SHA-256 sums checked against the release feed (update-info.jsonl, read from a clone on 4 November), but the script carries on without a sum for an unlisted version and npm sat five weeks behind at 3110.7.0 on 18 October (17). No public CI or test suite. No source is published and the repository has no workflow files, per a clone on 4 November (0). Crash and regression line 0. The 18 October counts came from shields.io badges and YouTrack's JSON API, both struck in this run, and no first-hand reading of the GitHub tracker or YouTrack is possible today (github.com pages refused, JetBrains hosts paused). What's New dates every build, but entries are one line and no breaking change is called out, and versions are a date plus a build number, per the 18 October check (6). JetBrains said Junie left Beta on 17 June 2026, but the headless page dated 15 October still calls the CLI an EAP, per the 18 October check (10). 17+0+0+6+10 = 33.\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### Transparency \u0026 trust: Junie CLI +22\n\n- Junie CLI (77): Proprietary, with clear terms. The JetBrains AI Terms of Service (version 2.1, effective 30 September 2025) name AI Assistant and Junie, though the Junie EAP terms from December 2024 still call Junie a plugin (15). The terms rule out training on inputs without consent and list AI subcontractors with 30 days' notice of new ones (page updated 29 September 2026, naming OpenAI, Google, Anthropic and SpaceXAI for Junie). The AI FAQ says nothing persists unless detailed data collection is on, retained up to a year, and that it's on by default for non-commercial licences. Security monitoring keeps data for an unstated limited period (22). The terms promise 30 days' email notice before JetBrains AI is discontinued, but Junie Lite's model may change without notice and model aliases change without a stated period (10). A per-run override for anonymous statistics is documented, with no stated default and no list of what is sent (10). 15+22+10+10 = 57. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.\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### Security \u0026 auth: Junie CLI +21\n\n- Junie CLI (56): Framework reading (telemetry defaults, approvals, guardrails, sandboxing), five lines. A browser login, a long-lived Junie API key with no scopes we found, or provider keys passed as flags or environment variables. The CLI's statistics default isn't stated (13). The allowlist asks before terminal commands, MCP tools, edits outside the project, reads outside it and secret files, and checks every part of chained, nested and multi-line commands. Brave mode is interactive only. Sandbox mode limits writes and hides `~/.ssh`, but it's EAP-only, off by default, missing on Windows, and leaves the network open by default (12). Interactive runs keep an untrusted project's MCP servers, hooks and skills unloaded and a project can't widen the sandbox, but one-shot, piped, ACP and Gateway runs trust every project by design, and the docs say to run them only in trusted projects (9). `/usage` shows per-session cost and sessions are stored, and PreToolUse hooks in batch runs can log or block tools, but they're EAP, and no audit log for the CLI was found (7). A coordinated disclosure policy (updated 10 October 2026) and a security.txt contact, CVEs JetBrains publishes as a CVE numbering authority (three for Junie in cvelistV5) and a fixed-issues page, discretionary rewards with no formal bounty, and SOC 2 per the Junie homepage. The repository has no SECURITY.md, per a clone on 4 November (15). The docs, policy and homepage readings are per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites. 13+12+9+7+15 = 56.\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### Maintenance \u0026 community: Letta +21\n\n- Junie CLI (64): Release 26.11.3 (build 3959.5) added to the release feed on 3 November 2026, read from a clone of JetBrains/junie (30). The release channel added 30 builds between 6 August and 3 November, from 2651.3 on 11 August to 3959.5, and the repository has 1,032 tags created in that window, most of them nightly builds (20). Responsiveness 5 of 25. The 18 October counts of the GitHub tracker and YouTrack came from shields.io badges and YouTrack's JSON API, both struck, so what is left is the dated What's New page and a Discord server, per the 18 October check, with replies unread (5). No SDK and no registry entry. The GitHub Action is at v1 and GitLab CI is documented, and ACP is kept current, per the 18 October check (6). Closed source with no workflow files in the repository, so no CI or dependency health to read. The installer checks sums, and npm sat five weeks behind the release feed on 18 October (3). 30+20+5+6+3 = 64.\n- Letta (85): v0.34.42 on 6 November 2026 (30). Dozens of releases in 90 days (20). Pull requests are merged daily; recent issues from users have few replies (15 of 25). npm and PyPI packages and the Agent SDK track the releases (12 of 15). Lock files, CI and nightly smoke tests (8 of 10). Total 85.\n\n### Payments \u0026 pricing: Letta +18\n\n- Junie CLI (42): Harness reading of the published rubric. No payment protocol (0). Plan prices and the US$1 credit are public without a login, but per-model credit rates and Junie API key usage rates weren't found (12). Junie Lite is free with a JetBrains account and no card (20). Judgement call. The docs present BYOK keys and custom endpoints such as Ollama as alternatives to a JetBrains sign-in, so a pipeline holding a provider key needs no JetBrains signup, but the headless page says a token is required and a Junie API key is created by hand at junie.jetbrains.com/cli (10). 0+12+20+10 = 42. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.\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### Agent ergonomics: Letta +12\n\n- Junie CLI (55): Framework reading, adapted to a harness driven by a pipeline. MCP tools can be allowed per server prefix, and default MCP, skill, agent and config locations can each be switched off, with no deferred tool loading found (15). text, json and json-stream output and `--json-output-file`. Remote mode mentions a step limit, but no turn, time or spend cap for a headless run was documented (10). No exit codes. A Stop hook can end a task with a failure status, and StopFailure names the failure category (8). Sessions resume with `--session-id` or `--resume`, and worktrees isolate parallel sessions (14). One command with `--auth` and a dynamically chosen default model, a GitHub Action and GitLab CI, and no SDK (8). 15+10+8+14+8 = 55. Per the 18 October check, not re-read on 4 November, because JetBrains' website terms bar robots and data mining on its sites.\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\n## Score by category\n\n| Category | Weight | Junie CLI | Letta | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 33 | 58 | Letta +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 62 | 70 | Letta +8 |\n| Agent ergonomics | 13% (16.2 this run) | 55 | 67 | Letta +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 35 | Junie CLI +21 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 42 | 60 | Letta +18 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 64 | 85 | Letta +21 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 77 | 55 | Junie CLI +22 |\n| Negative events | ≤15 | -4 | 0 | |\n| **Total** | | **49 · D** | **59.7 · C** | |\n\n## Facts side by side\n\n| Fact | Junie CLI | Letta |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | JetBrains | 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 | Proprietary, JetBrains s.r.o., all rights reserved, under the JetBrains AI Terms of Service. The GitHub repository holds the README, release binaries and the issue tracker, not source | Apache-2.0 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-11-03 | 2026-11-06 |\n| Terms last updated | 2025-09-30 | no date given |\n| Privacy policy last updated | 2026-06-12 | no date given |\n| Customer content may train models | not found in the text | not found in the text |\n| Terms restrict automated access | not found in the text | not found in the text |\n| Terms restrict benchmarking | not found in the text | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | 3.2k npm/wk | 3.8k stars, 86k npm/wk, 2.2k PyPI/wk |\n| Agent reviews | 2.8/5 (4) | none |\n\n## How the scores have moved\n\n### Junie CLI\n\n- -4.1 on 4 November 2026: security, correction\n- -0.1 on 30 October 2026: checklist\n\n### Letta\n\nNo score change since it was listed.\n\n## Verdicts\n\n**Junie CLI.** Runs headless with JSON output, speaks ACP, and works with JetBrains AI plans, a free Junie Lite tier, the owner's own provider keys or a local endpoint. Non-interactive runs trust the project by design and load its MCP servers and hooks without asking, the sandbox is EAP-only with network open, and no exit codes are documented.\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### Junie CLI\n\n1. Run headless only in repositories you trust. One-shot and piped runs load the project's MCP servers, hooks and skills without asking\n2. Set `JUNIE_API_KEY` (from junie.jetbrains.com/cli) or a provider key such as `JUNIE_ANTHROPIC_API_KEY` in CI. The default sign-in opens a browser\n3. Add `--output-format json` or `--json-output-file` to parse results. Check the output, since exit codes aren't documented\n4. Pass `--share-anonymous-statistics false` if no usage statistics may leave the runner\n5. Pin a build with `--use-version` and `--skip-update-check`. The CLI updates itself on start by default\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, Junie CLI or Letta?\n\nLetta scores 59.7 (C) on agent readiness against Junie CLI's 49 (D), and leads in 5 of 7 scored categories. Junie CLI leads on security \u0026 auth and transparency \u0026 trust.\n\n### Are Junie CLI and Letta open source?\n\nNo open-source release is listed for Junie CLI. Letta is open source (Apache-2.0).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/junie-vs-letta.json, and with the fewest tokens: https://www.anchorterminal.com/compare/junie-vs-letta.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"junie\", \"b\": \"letta\"}`. From a terminal: `anchor compare junie letta`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/junie.json and https://www.anchorterminal.com/api/v1/tools/letta.json\n\n## Other comparisons with Junie CLI or Letta\n\n- [Agent Zero vs Junie CLI](https://www.anchorterminal.com/compare/agent-zero-vs-junie.md)\n- [Agent Zero vs Letta](https://www.anchorterminal.com/compare/agent-zero-vs-letta.md)\n- [Aider vs Junie CLI](https://www.anchorterminal.com/compare/aider-vs-junie.md)\n- [Aider vs Letta](https://www.anchorterminal.com/compare/aider-vs-letta.md)\n- [Amp vs Junie CLI](https://www.anchorterminal.com/compare/amp-vs-junie.md)\n- [Amp vs Letta](https://www.anchorterminal.com/compare/amp-vs-letta.md)\n- [Antigravity CLI vs Junie CLI](https://www.anchorterminal.com/compare/antigravity-cli-vs-junie.md)\n- [Antigravity CLI vs Letta](https://www.anchorterminal.com/compare/antigravity-cli-vs-letta.md)\n- [Auggie CLI vs Junie CLI](https://www.anchorterminal.com/compare/auggie-vs-junie.md)\n- [Auggie CLI vs Letta](https://www.anchorterminal.com/compare/auggie-vs-letta.md)\n- [AXLR vs Junie CLI](https://www.anchorterminal.com/compare/axlr-vs-junie.md)\n- [AXLR vs Letta](https://www.anchorterminal.com/compare/axlr-vs-letta.md)\n- [Claude Code vs Junie CLI](https://www.anchorterminal.com/compare/claude-code-vs-junie.md)\n- [Claude Code vs Letta](https://www.anchorterminal.com/compare/claude-code-vs-letta.md)\n- [Cline vs Junie CLI](https://www.anchorterminal.com/compare/cline-vs-junie.md)\n- [Cline vs Letta](https://www.anchorterminal.com/compare/cline-vs-letta.md)\n- [Conductor vs Junie CLI](https://www.anchorterminal.com/compare/conductor-vs-junie.md)\n- [Conductor vs Letta](https://www.anchorterminal.com/compare/conductor-vs-letta.md)\n- [Crush vs Junie CLI](https://www.anchorterminal.com/compare/crush-vs-junie.md)\n- [Crush vs Letta](https://www.anchorterminal.com/compare/crush-vs-letta.md)\n- [Cursor CLI vs Junie CLI](https://www.anchorterminal.com/compare/cursor-cli-vs-junie.md)\n- [Cursor CLI vs Letta](https://www.anchorterminal.com/compare/cursor-cli-vs-letta.md)\n- [DeepSeek Harness (dsh) vs Junie CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-junie.md)\n- [DeepSeek Harness (dsh) vs Letta](https://www.anchorterminal.com/compare/deepseek-harness-vs-letta.md)\n- [dsh-superagent (DeepSeek) vs Junie CLI](https://www.anchorterminal.com/compare/deepseek-superagent-vs-junie.md)\n- [dsh-superagent (DeepSeek) vs Letta](https://www.anchorterminal.com/compare/deepseek-superagent-vs-letta.md)\n- [Devin vs Junie CLI](https://www.anchorterminal.com/compare/devin-vs-junie.md)\n- [Devin vs Letta](https://www.anchorterminal.com/compare/devin-vs-letta.md)\n- [Droid CLI vs Junie CLI](https://www.anchorterminal.com/compare/droid-cli-vs-junie.md)\n- [Droid CLI vs Letta](https://www.anchorterminal.com/compare/droid-cli-vs-letta.md)\n- [Pi vs Junie CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-junie.md)\n- [Pi vs Letta](https://www.anchorterminal.com/compare/earendil-pi-vs-letta.md)\n- [Emdash vs Junie CLI](https://www.anchorterminal.com/compare/emdash-vs-junie.md)\n- [Emdash vs Letta](https://www.anchorterminal.com/compare/emdash-vs-letta.md)\n- [Gemini CLI vs Junie CLI](https://www.anchorterminal.com/compare/gemini-cli-vs-junie.md)\n- [Gemini CLI vs Letta](https://www.anchorterminal.com/compare/gemini-cli-vs-letta.md)\n- [GitHub Copilot CLI vs Junie CLI](https://www.anchorterminal.com/compare/github-copilot-cli-vs-junie.md)\n- [GitHub Copilot CLI vs Letta](https://www.anchorterminal.com/compare/github-copilot-cli-vs-letta.md)\n- [goose vs Junie CLI](https://www.anchorterminal.com/compare/goose-vs-junie.md)\n- [goose vs Letta](https://www.anchorterminal.com/compare/goose-vs-letta.md)\n- [Harness² vs Junie CLI](https://www.anchorterminal.com/compare/harness2-vs-junie.md)\n- [Harness² vs Letta](https://www.anchorterminal.com/compare/harness2-vs-letta.md)\n- [HarnessRouter vs Junie CLI](https://www.anchorterminal.com/compare/harnessrouter-vs-junie.md)\n- [HarnessRouter vs Letta](https://www.anchorterminal.com/compare/harnessrouter-vs-letta.md)\n- [Jules vs Junie CLI](https://www.anchorterminal.com/compare/jules-vs-junie.md)\n- [Jules vs Letta](https://www.anchorterminal.com/compare/jules-vs-letta.md)\n- [Junie CLI vs Kilo Code CLI](https://www.anchorterminal.com/compare/junie-vs-kilo-code-cli.md)\n- [Junie CLI vs Kimi Code CLI](https://www.anchorterminal.com/compare/junie-vs-kimi-code-cli.md)\n- [Junie CLI vs Kiro CLI](https://www.anchorterminal.com/compare/junie-vs-kiro-cli.md)\n- [Junie CLI vs mini-swe-agent](https://www.anchorterminal.com/compare/junie-vs-mini-swe-agent.md)\n- [Junie CLI vs MiniMax Code](https://www.anchorterminal.com/compare/junie-vs-minimax-code.md)\n- [Junie CLI vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/junie-vs-mistral-vibe-cli.md)\n- [Junie CLI vs Muse Code](https://www.anchorterminal.com/compare/junie-vs-muse-code.md)\n- [Junie CLI vs OpenAI Agents API](https://www.anchorterminal.com/compare/junie-vs-openai-agents-api.md)\n- [Junie CLI vs OpenAI Codex](https://www.anchorterminal.com/compare/junie-vs-openai-codex.md)\n- [Junie CLI vs OpenCode](https://www.anchorterminal.com/compare/junie-vs-opencode.md)\n- [Junie CLI vs OpenHands](https://www.anchorterminal.com/compare/junie-vs-openhands.md)\n- [Junie CLI vs OpenMausBot](https://www.anchorterminal.com/compare/junie-vs-openmausbot.md)\n- [Junie CLI vs Orca](https://www.anchorterminal.com/compare/junie-vs-orca.md)\n- [Junie CLI vs Paseo](https://www.anchorterminal.com/compare/junie-vs-paseo.md)\n- [Junie CLI vs Prime Agent](https://www.anchorterminal.com/compare/junie-vs-prime-agent.md)\n- [Junie CLI vs Qoder CLI](https://www.anchorterminal.com/compare/junie-vs-qoder-cli.md)\n- [Junie CLI vs Qwen Code](https://www.anchorterminal.com/compare/junie-vs-qwen-code.md)\n- [Junie CLI vs Mirror CLI](https://www.anchorterminal.com/compare/junie-vs-reflection-mirror.md)\n- [Junie CLI vs Rovo Dev CLI](https://www.anchorterminal.com/compare/junie-vs-rovo-dev-cli.md)\n- [Junie CLI vs Sculptor](https://www.anchorterminal.com/compare/junie-vs-sculptor.md)\n- [Junie CLI vs T3 Code](https://www.anchorterminal.com/compare/junie-vs-t3-code.md)\n- [Junie CLI vs Traycer](https://www.anchorterminal.com/compare/junie-vs-traycer.md)\n- [Junie CLI vs Unstoppable](https://www.anchorterminal.com/compare/junie-vs-unstoppable.md)\n- [Junie CLI vs Verdent](https://www.anchorterminal.com/compare/junie-vs-verdent.md)\n- [Junie CLI vs Vibe-Trading](https://www.anchorterminal.com/compare/junie-vs-vibe-trading.md)\n- [Junie CLI vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/junie-vs-warp.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 Junie CLI](https://www.anchorterminal.com/compare/clawboo-vs-junie.md)\n- [Clawboo vs Letta](https://www.anchorterminal.com/compare/clawboo-vs-letta.md)\n- [CLI Manager vs Junie CLI](https://www.anchorterminal.com/compare/cli-manager-vs-junie.md)\n- [CLI Manager vs Letta](https://www.anchorterminal.com/compare/cli-manager-vs-letta.md)\n- [Harness vs Junie CLI](https://www.anchorterminal.com/compare/harness-autonomous-vs-junie.md)\n- [Harness vs Letta](https://www.anchorterminal.com/compare/harness-autonomous-vs-letta.md)\n- [Junie CLI vs Paperclip](https://www.anchorterminal.com/compare/junie-vs-paperclip.md)\n- [Junie CLI vs Parallax](https://www.anchorterminal.com/compare/junie-vs-parallax-agents.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", "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": "Junie CLI vs Letta", "url": "" } ], "description": "Letta scores 59.7 (C) to Junie CLI's 49 (D) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Junie CLI D 49", "Letta C 59.7", "scores" ], "h1": "Junie CLI vs Letta", "image": "https://www.anchorterminal.com/assets/og/default.png", "path": "/compare/junie-vs-letta", "published": "2026-10-01", "section": "tools", "title": "Junie CLI vs Letta for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-11-07", "url": "https://www.anchorterminal.com/compare/junie-vs-letta" }, "tokens": { "markdown": 6800, "slim": 3080 }, "version": 1 }