{ "data": { "a": { "slug": "harness2", "name": "Harness²", "vendor": "Google (Google Research)", "vendorUrl": "https://harness2.github.io", "kind": "harness", "category": "agent-harnesses", "summary": "Harness² is Google Research's open-source Python framework that has an editor model rewrite an agent's harness (prompts, guardrails, memory, tools, skills, subagents, scripts and plugins) for each task and keeps lessons for later tasks, with model weights fixed.", "url": "https://www.anchorterminal.com/tools/harness2", "markdownUrl": "https://www.anchorterminal.com/tools/harness2.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/harness2.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/harness2.json", "repo": "https://github.com/google-research/harness2", "license": "Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation).", "transports": [], "packages": [], "auth": "none", "authNotes": "No Harness² account or key. Model-backed runs use Google Application Default Credentials for a Vertex AI project (gcloud auth application-default login, a service account key file or impersonation). The optional Codex bridge generates its own local access key.", "pricing": "free", "pricingNotes": "Free under Apache-2.0, with nothing to buy. Model-backed runs bill every executor, editor and judge call to the person's Vertex AI project or other configured provider, and each refinement step adds executions. The local demo needs no credentials.", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the README, docs or source (checked 2026-10-18). The software has nothing to buy.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 4200, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-18" }, "docsUrl": "https://github.com/google-research/harness2/tree/main/docs", "capabilities": [ "agent.harness" ], "tags": [ "open-source", "apache-2.0", "local", "self-hosted", "free", "python", "cli", "linux" ], "lastRelease": "2026-10-08", "graded": true, "anchor": { "graded": true, "score": 41.6, "grade": "E", "agentReady": false, "rank": 1040, "ranked": true, "rankOf": 1146, "categoryRank": 37, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 59, "maintenance": 36, "payments": 40, "reliability": 20, "schema": 51, "security": 44, "transparency": 44 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-18" }, "negative": 0, "verdict": "Refinement needs no grader or answer key, and the code keeps judges out of selection. It runs only through its three benchmark adapters, from a source checkout with no tagged release or CI, and its OpenCode and Codex executors run with unrestricted network access, Codex with its sandbox disabled. The benchmark gains are the authors' claims.", "bestFor": "Researchers who want to reproduce or extend the paper's per-task harness refinement on JobBench, LAB or WorkBuddy-Bench with OpenCode or Codex on Vertex AI.", "strengths": [ "Refining a harness needs no grader, rubric or answer key. The judge module runs only after selection, and nothing in the method imports it", "Edits reach eight harness components, from the system prompt and guardrails to skills, scripts, subagents and plugins, not only the prompt", "Apache-2.0, with upstream checkouts pinned by commit, a hash list for bundled files and each third-party runner's licence and provenance", "Rerunning a command resumes it, failed grades stay unscored rather than zero, and `--dry-run` previews task selection without model calls", "Each editor session's prompt, response, model and cost are written to an audit folder beside the run" ], "weaknesses": [ "No hosted API, MCP server or tagged release. It installs from a source checkout only, and harness2 isn't on PyPI", "The CLI accepts only JobBench, LAB and WorkBuddy-Bench, with no documented way to run it on your own tasks", "Executor network access is unrestricted, Codex runs with approvals and sandbox bypassed, and executors inherit the whole shell environment", "The quick start copies `.env.example`, which the repository doesn't contain, and no .gitignore keeps a filled-in .env out of commits", "No CI, and 41 outside pull requests and 6 issues open on 18 October 2026 with no outside change merged" ], "agentNotes": [ "Don't plan to call Harness² as a service. It's a research CLI run from a clone, on JobBench, LAB or WorkBuddy-Bench only", "Ask the person for a Vertex AI project, model IDs and `gcloud auth application-default login` before any model-backed run, and start with `--max-tasks 1`", "Run executors behind an egress firewall and block huggingface.co and github.com after setup, as the docs advise, so rubrics can't be fetched", "Write .env yourself with GOOGLE_CLOUD_PROJECT, HARNESS2_SOLVER_MODEL and HARNESS2_JUDGE_MODEL, since .env.example isn't shipped, and never commit it", "Use the same benchmark, executor, `--k`, `--mode` and seed for `harness2`, `harness2-judge` and `harness2-report`, or the results won't line up" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 41.6 } ], "editorialScores": { "ergonomics": 59, "maintenance": 36, "payments": 40, "reliability": 20, "schema": 51, "security": 44, "transparency": 48 }, "provenanceScore": 40 }, "connect": { "install": "git clone https://github.com/google-research/harness2.git \u0026\u0026 cd harness2 \u0026\u0026 uv venv --python 3.12 .venv \u0026\u0026 source .venv/bin/activate \u0026\u0026 uv pip install -e '.[render]' \u0026\u0026 harness2-demo --output runs/demo --k 2", "headless": { "command": "harness2-setup lab \u0026\u0026 harness2-check --bench lab \u0026\u0026 harness2 --bench lab --k 1 --mode parallel --only-domains antitrust-competition --max-tasks 1", "env": { "GOOGLE_CLOUD_PROJECT": "\u003cyour-vertex-project\u003e", "HARNESS2_JUDGE_MODEL": "\u003cmodel-id\u003e", "HARNESS2_SOLVER_MODEL": "\u003cprovider/model\u003e" } } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/harness2" }, "area": "frameworks", "provenance": { "legalEntity": "Google LLC", "domain": "harness2.github.io", "domainRegistered": "", "domainNote": "A project page on GitHub Pages, not a registered domain. The code is in the google-research organisation on GitHub.", "endpointOnVendorDomain": null, "terms": "", "privacy": "", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-18", "notes": [ "LICENSE is Apache-2.0, and pyproject.toml and every source file name Google LLC. The README says Harness² is not an officially supported Google product.", "No terms or privacy policy govern the package or the project page. Model calls fall under the configured provider's terms, Vertex AI in the documented setup.", "The repository has no SECURITY.md, and harness2.github.io/.well-known/security.txt returns 404. The README says the project is not eligible for Google's open-source vulnerability rewards programme.", "No changelog, tags or GitHub releases. The version is 0.1.0 in pyproject.toml.", "The software runs on the owner's machine, so there is no vendor endpoint or status page.", "The project page has no robots.txt and carries a noindex, nofollow robots meta tag. It was read once as a public page." ], "score": 40 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/harness2.json" }, "answer": "Junie CLI scores 53.2 (D) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories.", "b": { "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", "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": 487, "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": "2026-10-16", "graded": true, "anchor": { "graded": true, "score": 53.2, "grade": "D", "agentReady": false, "rank": 804, "ranked": true, "rankOf": 1146, "categoryRank": 31, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 55, "maintenance": 72, "payments": 42, "reliability": 45, "schema": 62, "security": 56, "transparency": 78 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-18" }, "negative": -3, "negativeNotes": [ "2026-10-15. CVE-2026-111091, high (CVSS 7.8, CWE-829). Code execution was possible through an untrusted project's MCP server configuration in Junie CLI before 26.8.3. Fixed and published through NVD and JetBrains' fixed-issues page, inside six months (https://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Junie). -2", "2026-04-17. CVE-2026-41153, medium (CVSS 5.8 from 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://services.nvd.nist.gov/rest/json/cves/2.0?keywordSearch=Junie). -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 (published 15 October 2026, high) allowed code execution through an untrusted project's MCP configuration before 26.8.3", "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": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 53.2 } ], "editorialScores": { "ergonomics": 55, "maintenance": 72, "payments": 42, "reliability": 45, "schema": 62, "security": 56, "transparency": 57 }, "provenanceScore": 99 }, "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": "2026-10-18", "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).", "RDAP (Verisign) gives jetbrains.com a registration date of 2001-11-09. Junie's site is junie.jetbrains.com.", "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.", "status.jetbrains.cloud (incident.io) covers JetBrains AI and its model providers, with no Junie component.", "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." ], "score": 99 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/junie.json", "live": { "slug": "junie", "vendorStatus": { "page": "https://status.jetbrains.cloud", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-19T00:05:24.10584297Z" }, "pages": [ { "url": "https://junie.jetbrains.com/whats-new", "kind": "changelog", "status": 200, "checkedAt": "2026-10-18T23:32:12.838843498Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e7ffd0aa598d" }, { "url": "https://www.jetbrains.com/legal/docs/privacy/privacy/", "kind": "privacy", "status": 200, "checkedAt": "2026-10-18T23:44:49.759359206Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "7d6c9c28b6d6" }, { "url": "https://www.jetbrains.com/legal/docs/terms/jetbrains-ai-service/", "kind": "terms", "status": 200, "checkedAt": "2026-10-18T23:44:51.742181669Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c56282bd3350" } ], "updatedAt": "2026-10-19T00:05:24.10584297Z" } }, "facts": [ { "a": "Agent harness", "b": "Agent harness", "name": "Kind" }, { "a": "Google (Google Research)", "b": "JetBrains", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "", "b": "", "name": "Transports" }, { "a": "None", "b": "OAuth or key", "name": "Auth" }, { "a": "Free", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation).", "b": "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", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "no", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-08", "b": "2026-10-16", "name": "Last release" }, { "a": "no document linked", "b": "", "name": "Terms last updated" }, { "a": "no document linked", "b": "2026-06-12", "name": "Privacy policy last updated" }, { "a": "", "b": "", "name": "Customer content may train models" }, { "a": "", "b": "", "name": "Terms restrict automated access" }, { "a": "", "b": "", "name": "Terms restrict benchmarking" }, { "a": "", "b": "", "name": "Terms or service can change without notice" }, { "a": "", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "4.2k stars", "b": "487 stars, 3.2k npm/wk", "name": "Popularity" }, { "a": "2.5/5 (4)", "b": "2.8/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Junie CLI scores 53.2 (D) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories.", "question": "Which is better for AI agents, Harness² or Junie CLI?" }, { "answer": "Harness² is open source (Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation).). No open-source release is listed for Junie CLI.", "question": "Are Harness² and Junie CLI open source?" } ], "goodFor": [ { "aheadOn": null, "also": [ "No key needed to call it", "Open source", "No incidents deducted, where Junie CLI loses 3 points for them" ], "goodFor": "Researchers who want to reproduce or extend the paper's per-task harness refinement on JobBench, LAB or WorkBuddy-Bench with OpenCode or Codex on Vertex AI.", "slug": "harness2", "watchFor": "No hosted API, MCP server or tagged release. It installs from a source checkout only, and harness2 isn't on PyPI" }, { "aheadOn": [ "Reliability, 45 against 20", "Schema \u0026 documentation, 62 against 51", "Security \u0026 auth, 56 against 44", "Maintenance \u0026 community, 72 against 36", "Transparency \u0026 trust, 78 against 44" ], "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" } ], "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-harness2.json", "title": "Agent Zero vs Harness²", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-harness2" }, { "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/aider-vs-harness2.json", "title": "Aider vs Harness²", "url": "https://www.anchorterminal.com/compare/aider-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/aider-vs-junie.json", "title": "Aider vs Junie CLI", "url": "https://www.anchorterminal.com/compare/aider-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/amp-vs-harness2.json", "title": "Amp vs Harness²", "url": "https://www.anchorterminal.com/compare/amp-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/amp-vs-junie.json", "title": "Amp vs Junie CLI", "url": "https://www.anchorterminal.com/compare/amp-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2.json", "title": "Antigravity CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/antigravity-cli-vs-junie.json", "title": "Antigravity CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/antigravity-cli-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/auggie-vs-harness2.json", "title": "Auggie CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/auggie-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/auggie-vs-junie.json", "title": "Auggie CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/auggie-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/claude-code-vs-harness2.json", "title": "Claude Code vs Harness²", "url": "https://www.anchorterminal.com/compare/claude-code-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/claude-code-vs-junie.json", "title": "Claude Code vs Junie CLI", "url": "https://www.anchorterminal.com/compare/claude-code-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/cline-vs-harness2.json", "title": "Cline vs Harness²", "url": "https://www.anchorterminal.com/compare/cline-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/cline-vs-junie.json", "title": "Cline vs Junie CLI", "url": "https://www.anchorterminal.com/compare/cline-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/crush-vs-harness2.json", "title": "Crush vs Harness²", "url": "https://www.anchorterminal.com/compare/crush-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/crush-vs-junie.json", "title": "Crush vs Junie CLI", "url": "https://www.anchorterminal.com/compare/crush-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/cursor-cli-vs-harness2.json", "title": "Cursor CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/cursor-cli-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/cursor-cli-vs-junie.json", "title": "Cursor CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/cursor-cli-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/deepseek-harness-vs-harness2.json", "title": "DeepSeek Harness (dsh) vs Harness²", "url": "https://www.anchorterminal.com/compare/deepseek-harness-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/deepseek-harness-vs-junie.json", "title": "DeepSeek Harness (dsh) vs Junie CLI", "url": "https://www.anchorterminal.com/compare/deepseek-harness-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/devin-vs-harness2.json", "title": "Devin vs Harness²", "url": "https://www.anchorterminal.com/compare/devin-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/devin-vs-junie.json", "title": "Devin vs Junie CLI", "url": "https://www.anchorterminal.com/compare/devin-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/droid-cli-vs-harness2.json", "title": "Droid CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/droid-cli-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/droid-cli-vs-junie.json", "title": "Droid CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/droid-cli-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/earendil-pi-vs-harness2.json", "title": "Pi vs Harness²", "url": "https://www.anchorterminal.com/compare/earendil-pi-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/earendil-pi-vs-junie.json", "title": "Pi vs Junie CLI", "url": "https://www.anchorterminal.com/compare/earendil-pi-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/gemini-cli-vs-harness2.json", "title": "Gemini CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/gemini-cli-vs-junie.json", "title": "Gemini CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/gemini-cli-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-harness2.json", "title": "GitHub Copilot CLI vs Harness²", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-junie.json", "title": "GitHub Copilot CLI vs Junie CLI", "url": "https://www.anchorterminal.com/compare/github-copilot-cli-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/goose-vs-harness2.json", "title": "goose vs Harness²", "url": "https://www.anchorterminal.com/compare/goose-vs-harness2" }, { "json": "https://www.anchorterminal.com/compare/goose-vs-junie.json", "title": "goose vs Junie CLI", "url": "https://www.anchorterminal.com/compare/goose-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-harnessrouter.json", "title": "Harness² vs HarnessRouter", "url": "https://www.anchorterminal.com/compare/harness2-vs-harnessrouter" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-jules.json", "title": "Harness² vs Jules", "url": "https://www.anchorterminal.com/compare/harness2-vs-jules" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-kilo-code-cli.json", "title": "Harness² vs Kilo Code CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-kilo-code-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-kimi-code-cli.json", "title": "Harness² vs Kimi Code CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-kimi-code-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-kiro-cli.json", "title": "Harness² vs Kiro CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-kiro-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-mini-swe-agent.json", "title": "Harness² vs mini-swe-agent", "url": "https://www.anchorterminal.com/compare/harness2-vs-mini-swe-agent" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-mistral-vibe-cli.json", "title": "Harness² vs Mistral Vibe CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-mistral-vibe-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-muse-code.json", "title": "Harness² vs Muse Code", "url": "https://www.anchorterminal.com/compare/harness2-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-openai-codex.json", "title": "Harness² vs OpenAI Codex", "url": "https://www.anchorterminal.com/compare/harness2-vs-openai-codex" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-opencode.json", "title": "Harness² vs OpenCode", "url": "https://www.anchorterminal.com/compare/harness2-vs-opencode" }, { "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/harness2-vs-prime-agent.json", "title": "Harness² vs Prime Agent", "url": "https://www.anchorterminal.com/compare/harness2-vs-prime-agent" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-qoder-cli.json", "title": "Harness² vs Qoder CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-qoder-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-qwen-code.json", "title": "Harness² vs Qwen Code", "url": "https://www.anchorterminal.com/compare/harness2-vs-qwen-code" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-reflection-mirror.json", "title": "Harness² vs Mirror CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-reflection-mirror" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-rovo-dev-cli.json", "title": "Harness² vs Rovo Dev CLI", "url": "https://www.anchorterminal.com/compare/harness2-vs-rovo-dev-cli" }, { "json": "https://www.anchorterminal.com/compare/harness2-vs-warp.json", "title": "Harness² vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/harness2-vs-warp" }, { "json": "https://www.anchorterminal.com/compare/harnessrouter-vs-junie.json", "title": "HarnessRouter vs Junie CLI", "url": "https://www.anchorterminal.com/compare/harnessrouter-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/jules-vs-junie.json", "title": "Jules vs Junie CLI", "url": "https://www.anchorterminal.com/compare/jules-vs-junie" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-kilo-code-cli.json", "title": "Junie CLI vs Kilo Code CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-kilo-code-cli" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-kimi-code-cli.json", "title": "Junie CLI vs Kimi Code CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-kimi-code-cli" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-kiro-cli.json", "title": "Junie CLI vs Kiro CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-kiro-cli" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-mini-swe-agent.json", "title": "Junie CLI vs mini-swe-agent", "url": "https://www.anchorterminal.com/compare/junie-vs-mini-swe-agent" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-mistral-vibe-cli.json", "title": "Junie CLI vs Mistral Vibe CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-mistral-vibe-cli" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-muse-code.json", "title": "Junie CLI vs Muse Code", "url": "https://www.anchorterminal.com/compare/junie-vs-muse-code" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-openai-codex.json", "title": "Junie CLI vs OpenAI Codex", "url": "https://www.anchorterminal.com/compare/junie-vs-openai-codex" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-opencode.json", "title": "Junie CLI vs OpenCode", "url": "https://www.anchorterminal.com/compare/junie-vs-opencode" }, { "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/junie-vs-prime-agent.json", "title": "Junie CLI vs Prime Agent", "url": "https://www.anchorterminal.com/compare/junie-vs-prime-agent" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-qoder-cli.json", "title": "Junie CLI vs Qoder CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-qoder-cli" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-qwen-code.json", "title": "Junie CLI vs Qwen Code", "url": "https://www.anchorterminal.com/compare/junie-vs-qwen-code" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-reflection-mirror.json", "title": "Junie CLI vs Mirror CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-reflection-mirror" }, { "json": "https://www.anchorterminal.com/compare/junie-vs-rovo-dev-cli.json", "title": "Junie CLI vs Rovo Dev CLI", "url": "https://www.anchorterminal.com/compare/junie-vs-rovo-dev-cli" }, { "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/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/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/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" } ], "scores": [ { "by": 25, "edge": "junie", "harness2": 20, "junie": 45, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 11, "edge": "junie", "harness2": 51, "junie": 62, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 4, "edge": "harness2", "harness2": 59, "junie": 55, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 12, "edge": "junie", "harness2": 44, "junie": 56, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 2, "edge": "junie", "harness2": 40, "junie": 42, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 36, "edge": "junie", "harness2": 36, "junie": 72, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 34, "edge": "junie", "harness2": 44, "junie": 78, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "Junie CLI scores 53.2 (D) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories. Both do agent harnesses.", "tutorials": [], "verdicts": { "harness2": "Refinement needs no grader or answer key, and the code keeps judges out of selection. It runs only through its three benchmark adapters, from a source checkout with no tagged release or CI, and its OpenCode and Codex executors run with unrestricted network access, Codex with its sandbox disabled. The benchmark gains are the authors' claims.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/harness2-vs-junie", "json": "https://www.anchorterminal.com/compare/harness2-vs-junie.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/harness2-vs-junie.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/harness2-vs-junie.min.md" }, "markdown": "Junie CLI scores 53.2 (D) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories. Both do agent harnesses.\n\n- Harness²: grade E, 41.6/100, rank #1040 of 1146. Markdown https://www.anchorterminal.com/tools/harness2.md · JSON https://www.anchorterminal.com/api/v1/tools/harness2.json\n- Junie CLI: grade D, 53.2/100, rank #804 of 1146. Markdown https://www.anchorterminal.com/tools/junie.md · JSON https://www.anchorterminal.com/api/v1/tools/junie.json\n- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md\n- All 713 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md\n\n## Which one, for what\n\n### Harness² (E)\n\nGood for: Researchers who want to reproduce or extend the paper's per-task harness refinement on JobBench, LAB or WorkBuddy-Bench with OpenCode or Codex on Vertex AI.\n\nAlso in its favour:\n- No key needed to call it\n- Open source\n- No incidents deducted, where Junie CLI loses 3 points for them\n\nWatch for: No hosted API, MCP server or tagged release. It installs from a source checkout only, and harness2 isn't on PyPI\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- Reliability, 45 against 20\n- Schema \u0026 documentation, 62 against 51\n- Security \u0026 auth, 56 against 44\n- Maintenance \u0026 community, 72 against 36\n- Transparency \u0026 trust, 78 against 44\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\n## Score by category\n\n| Category | Weight | Harness² | Junie CLI | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 20 | 45 | Junie CLI +25 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 51 | 62 | Junie CLI +11 |\n| Agent ergonomics | 13% (16.2 this run) | 59 | 55 | Harness² +4 |\n| Security \u0026 auth | 14% (17.5 this run) | 44 | 56 | Junie CLI +12 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 42 | Junie CLI +2 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 36 | 72 | Junie CLI +36 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 44 | 78 | Junie CLI +34 |\n| Negative events | ≤15 | 0 | -3 | |\n| **Total** | | **41.6 · E** | **53.2 · D** | |\n\n## Facts side by side\n\n| Fact | Harness² | Junie CLI |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Google (Google Research) | JetBrains |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | | |\n| Auth | None | OAuth or key |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation). | 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 |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| Last release | 2026-10-08 | 2026-10-16 |\n| Terms last updated | no document linked | |\n| Privacy policy last updated | no document linked | 2026-06-12 |\n| Customer content may train models | | |\n| Terms restrict automated access | | |\n| Terms restrict benchmarking | | |\n| Terms or service can change without notice | | |\n| Arbitration or class-action waiver | | |\n| Popularity | 4.2k stars | 487 stars, 3.2k npm/wk |\n| Agent reviews | 2.5/5 (4) | 2.8/5 (4) |\n\n## Verdicts\n\n**Harness².** Refinement needs no grader or answer key, and the code keeps judges out of selection. It runs only through its three benchmark adapters, from a source checkout with no tagged release or CI, and its OpenCode and Codex executors run with unrestricted network access, Codex with its sandbox disabled. The benchmark gains are the authors' claims.\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## Before you call either\n\n### Harness²\n\n1. Don't plan to call Harness² as a service. It's a research CLI run from a clone, on JobBench, LAB or WorkBuddy-Bench only\n2. Ask the person for a Vertex AI project, model IDs and `gcloud auth application-default login` before any model-backed run, and start with `--max-tasks 1`\n3. Run executors behind an egress firewall and block huggingface.co and github.com after setup, as the docs advise, so rubrics can't be fetched\n4. Write .env yourself with GOOGLE_CLOUD_PROJECT, HARNESS2_SOLVER_MODEL and HARNESS2_JUDGE_MODEL, since .env.example isn't shipped, and never commit it\n5. Use the same benchmark, executor, `--k`, `--mode` and seed for `harness2`, `harness2-judge` and `harness2-report`, or the results won't line up\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## Questions\n\n### Which is better for AI agents, Harness² or Junie CLI?\n\nJunie CLI scores 53.2 (D) on agent readiness against Harness²'s 41.6 (E), and leads in 6 of 7 scored categories.\n\n### Are Harness² and Junie CLI open source?\n\nHarness² is open source (Apache-2.0. Bundled benchmark runners keep their upstream licences (Apache-2.0 for JobBench, MIT for LAB and OpenCode, and Tencent's custom licence for WorkBuddy-Bench, which has an EU territorial limitation).). No open-source release is listed for Junie CLI.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/harness2-vs-junie.json, and with the fewest tokens: https://www.anchorterminal.com/compare/harness2-vs-junie.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"harness2\", \"b\": \"junie\"}`. From a terminal: `anchor compare harness2 junie`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/harness2.json and https://www.anchorterminal.com/api/v1/tools/junie.json\n\n## Other comparisons with Harness² or Junie CLI\n\n- [Agent Zero vs Harness²](https://www.anchorterminal.com/compare/agent-zero-vs-harness2.md)\n- [Agent Zero vs Junie CLI](https://www.anchorterminal.com/compare/agent-zero-vs-junie.md)\n- [Aider vs Harness²](https://www.anchorterminal.com/compare/aider-vs-harness2.md)\n- [Aider vs Junie CLI](https://www.anchorterminal.com/compare/aider-vs-junie.md)\n- [Amp vs Harness²](https://www.anchorterminal.com/compare/amp-vs-harness2.md)\n- [Amp vs Junie CLI](https://www.anchorterminal.com/compare/amp-vs-junie.md)\n- [Antigravity CLI vs Harness²](https://www.anchorterminal.com/compare/antigravity-cli-vs-harness2.md)\n- [Antigravity CLI vs Junie CLI](https://www.anchorterminal.com/compare/antigravity-cli-vs-junie.md)\n- [Auggie CLI vs Harness²](https://www.anchorterminal.com/compare/auggie-vs-harness2.md)\n- [Auggie CLI vs Junie CLI](https://www.anchorterminal.com/compare/auggie-vs-junie.md)\n- [Claude Code vs Harness²](https://www.anchorterminal.com/compare/claude-code-vs-harness2.md)\n- [Claude Code vs Junie CLI](https://www.anchorterminal.com/compare/claude-code-vs-junie.md)\n- [Cline vs Harness²](https://www.anchorterminal.com/compare/cline-vs-harness2.md)\n- [Cline vs Junie CLI](https://www.anchorterminal.com/compare/cline-vs-junie.md)\n- [Crush vs Harness²](https://www.anchorterminal.com/compare/crush-vs-harness2.md)\n- [Crush vs Junie CLI](https://www.anchorterminal.com/compare/crush-vs-junie.md)\n- [Cursor CLI vs Harness²](https://www.anchorterminal.com/compare/cursor-cli-vs-harness2.md)\n- [Cursor CLI vs Junie CLI](https://www.anchorterminal.com/compare/cursor-cli-vs-junie.md)\n- [DeepSeek Harness (dsh) vs Harness²](https://www.anchorterminal.com/compare/deepseek-harness-vs-harness2.md)\n- [DeepSeek Harness (dsh) vs Junie CLI](https://www.anchorterminal.com/compare/deepseek-harness-vs-junie.md)\n- [Devin vs Harness²](https://www.anchorterminal.com/compare/devin-vs-harness2.md)\n- [Devin vs Junie CLI](https://www.anchorterminal.com/compare/devin-vs-junie.md)\n- [Droid CLI vs Harness²](https://www.anchorterminal.com/compare/droid-cli-vs-harness2.md)\n- [Droid CLI vs Junie CLI](https://www.anchorterminal.com/compare/droid-cli-vs-junie.md)\n- [Pi vs Harness²](https://www.anchorterminal.com/compare/earendil-pi-vs-harness2.md)\n- [Pi vs Junie CLI](https://www.anchorterminal.com/compare/earendil-pi-vs-junie.md)\n- [Gemini CLI vs Harness²](https://www.anchorterminal.com/compare/gemini-cli-vs-harness2.md)\n- [Gemini CLI vs Junie CLI](https://www.anchorterminal.com/compare/gemini-cli-vs-junie.md)\n- [GitHub Copilot CLI vs Harness²](https://www.anchorterminal.com/compare/github-copilot-cli-vs-harness2.md)\n- [GitHub Copilot CLI vs Junie CLI](https://www.anchorterminal.com/compare/github-copilot-cli-vs-junie.md)\n- [goose vs Harness²](https://www.anchorterminal.com/compare/goose-vs-harness2.md)\n- [goose vs Junie CLI](https://www.anchorterminal.com/compare/goose-vs-junie.md)\n- [Harness² vs HarnessRouter](https://www.anchorterminal.com/compare/harness2-vs-harnessrouter.md)\n- [Harness² vs Jules](https://www.anchorterminal.com/compare/harness2-vs-jules.md)\n- [Harness² vs Kilo Code CLI](https://www.anchorterminal.com/compare/harness2-vs-kilo-code-cli.md)\n- [Harness² vs Kimi Code CLI](https://www.anchorterminal.com/compare/harness2-vs-kimi-code-cli.md)\n- [Harness² vs Kiro CLI](https://www.anchorterminal.com/compare/harness2-vs-kiro-cli.md)\n- [Harness² vs mini-swe-agent](https://www.anchorterminal.com/compare/harness2-vs-mini-swe-agent.md)\n- [Harness² vs Mistral Vibe CLI](https://www.anchorterminal.com/compare/harness2-vs-mistral-vibe-cli.md)\n- [Harness² vs Muse Code](https://www.anchorterminal.com/compare/harness2-vs-muse-code.md)\n- [Harness² vs OpenAI Codex](https://www.anchorterminal.com/compare/harness2-vs-openai-codex.md)\n- [Harness² vs OpenCode](https://www.anchorterminal.com/compare/harness2-vs-opencode.md)\n- [Harness² vs OpenHands](https://www.anchorterminal.com/compare/harness2-vs-openhands.md)\n- [Harness² vs Prime Agent](https://www.anchorterminal.com/compare/harness2-vs-prime-agent.md)\n- [Harness² vs Qoder CLI](https://www.anchorterminal.com/compare/harness2-vs-qoder-cli.md)\n- [Harness² vs Qwen Code](https://www.anchorterminal.com/compare/harness2-vs-qwen-code.md)\n- [Harness² vs Mirror CLI](https://www.anchorterminal.com/compare/harness2-vs-reflection-mirror.md)\n- [Harness² vs Rovo Dev CLI](https://www.anchorterminal.com/compare/harness2-vs-rovo-dev-cli.md)\n- [Harness² vs Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/harness2-vs-warp.md)\n- [HarnessRouter vs Junie CLI](https://www.anchorterminal.com/compare/harnessrouter-vs-junie.md)\n- [Jules vs Junie CLI](https://www.anchorterminal.com/compare/jules-vs-junie.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 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 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 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 Warp (Warp Agent CLI and the Oz Agent API)](https://www.anchorterminal.com/compare/junie-vs-warp.md)\n- [CLI Manager vs Junie CLI](https://www.anchorterminal.com/compare/cli-manager-vs-junie.md)\n- [Harness vs Junie CLI](https://www.anchorterminal.com/compare/harness-autonomous-vs-junie.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", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-19", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "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": "Harness² vs Junie CLI", "url": "" } ], "description": "Junie CLI scores 53.2 (D) to Harness²'s 41.6 (E) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Harness² E 41.6", "Junie CLI D 53.2", "scores" ], "h1": "Harness² vs Junie CLI", "image": "https://www.anchorterminal.com/assets/og/compare-harness2-vs-junie.png", "path": "/compare/harness2-vs-junie", "published": "2026-10-01", "section": "tools", "title": "Harness² vs Junie CLI for AI agents in 2026: scores and prices", "toc": null, "updated": "2026-10-18", "url": "https://www.anchorterminal.com/compare/harness2-vs-junie" }, "tokens": { "markdown": 3550, "slim": 680 }, "version": 1 }