{ "data": { "a": { "slug": "aider", "name": "Aider", "vendor": "Aider AI LLC", "vendorUrl": "https://aider.chat", "kind": "harness", "category": "agent-harnesses", "summary": "Terminal pair-programming tool that edits files in a local git repository through text edit formats rather than tool calls, builds a repo map with tree-sitter, and commits each change.", "url": "https://www.anchorterminal.com/tools/aider", "markdownUrl": "https://www.anchorterminal.com/tools/aider.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/aider.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/aider.json", "repo": "https://github.com/Aider-AI/aider", "license": "Apache-2.0", "transports": [], "packages": [ { "registry": "pypi", "name": "aider-chat" } ], "auth": "none", "authNotes": "No account. Model keys come from environment variables, a `.env` file or `--api-key` flags, and go straight to the provider through LiteLLM.", "pricing": "free", "pricingNotes": "Free and Apache-2.0, with nothing to buy. You pay your model provider, or nothing with a local model.", "priceSummary": "Free · OSS", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs or the source (checked 2026-10-01).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 49300, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-01" }, "docsUrl": "https://aider.chat/docs/", "capabilities": [ "agent.harness" ], "tags": [ "open-source", "local", "free", "no-card", "python", "pre-1.0" ], "lastRelease": "2026-02-12", "graded": true, "anchor": { "graded": true, "score": 47.1, "grade": "D", "agentReady": false, "rank": 385, "ranked": true, "rankOf": 452, "categoryRank": 9, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 13, "payments": 60, "reliability": 54, "schema": 56, "security": 59, "transparency": 65 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "high", "date": "2026-10-01" }, "negative": -8, "negativeNotes": [ "2026-09-04. CVE-2026-85674 (7.8, filed by VulnCheck). Aider loads `.aider.conf.yml` from the root of the repository it starts in, and a crafted file's `test-cmd` runs at startup and `lint-cmd` on the first edit, through a shell, with no confirmation, model call or API key. It affects 0.86.2 and earlier, no release fixes it, and the report (#5254) is open. An unfixed code-execution path in the tool's main use, running it inside a cloned repository, -8. https://nvd.nist.gov/vuln/detail/CVE-2026-85674" ], "verdict": "Analytics opt-in and offered to 10 per cent of users, with a permanent opt-out and a local log. No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026.", "strengths": [ "Analytics opt-in and offered to 10 per cent of users, with a permanent opt-out and a local log", "A git commit per edit by default, with `/undo`", "Asks before running shell commands the model suggests", "A repo map sized by `--map-tokens` keeps its own context cost small", "Any model through LiteLLM, local ones included, with no account" ], "weaknesses": [ "No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026", "CVE-2026-85674 lets a repository's `.aider.conf.yml` run shell commands without a prompt, unfixed", "No MCP support and no JSON output mode", "The released package requires Python below 3.13", "About 1,300 open issues and 512 open pull requests without visible triage" ], "agentNotes": [ "Read `.aider.conf.yml` in any cloned repository before starting aider. Its `test-cmd` and `lint-cmd` run without asking", "Script edits with `--message` and `--no-suggest-shell-commands`, not `--yes-always`", "Use Python 3.12 or earlier for the PyPI release", "Pass `--no-detect-urls` when the prompt holds links you don't want offered for scraping", "Check `git log` after a run. Each edit is its own commit" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 1, "history": [ { "basis": "public evidence", "confidence": "high", "grade": "D", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 47.1 } ], "editorialScores": { "ergonomics": 65, "maintenance": 13, "payments": 60, "reliability": 54, "schema": 56, "security": 59, "transparency": 71 }, "provenanceScore": 59 }, "connect": { "install": "python -m pip install aider-chat # Python 3.10 to 3.12", "headless": { "command": "aider --message \"$TASK\" --no-suggest-shell-commands --no-analytics --no-detect-urls path/to/file.py", "env": { "ANTHROPIC_API_KEY": "\u003ckey\u003e" } } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/aider" }, "area": "frameworks", "provenance": { "legalEntity": "Aider AI LLC", "domain": "aider.chat", "domainRegistered": "", "endpointOnVendorDomain": null, "terms": "", "privacy": "https://aider.chat/docs/legal/privacy.html", "statusPage": "", "changelog": "https://aider.chat/HISTORY.html", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The privacy policy names Aider AI LLC and covers the website and the tool's opt-in analytics.", "We found no terms of service and no security.txt in the site's source, which lives in the repository under aider/website." ], "score": 59 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/aider.json", "live": { "slug": "aider", "versions": [ { "registry": "github", "name": "Aider-AI/aider", "version": "v0.86.0", "released": "2025-08-09", "seenAt": "2026-10-04T16:19:51.232575987Z" }, { "registry": "pypi", "name": "aider-chat", "version": "0.86.2", "released": "2026-02-12", "seenAt": "2026-10-04T16:19:51.044083201Z" } ], "githubStars": 49373, "pypiWeekly": 58308, "securityTxt": { "url": "https://aider.chat/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:46.171141775Z" }, "domain": { "domain": "aider.chat", "registered": "2023-05-15", "source": "https://rdap.identitydigital.services/rdap/domain/aider.chat", "checkedAt": "2026-10-04T13:08:53.462985596Z" }, "pages": [ { "url": "https://aider.chat/HISTORY.html", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:41:09.185105676Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "3bc7d2e4729c" }, { "url": "https://aider.chat/docs/legal/privacy.html", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:41:11.29274257Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4b2b6386e645" } ], "updatedAt": "2026-10-04T16:19:51.232575987Z" } }, "b": { "slug": "gemini-cli", "name": "Gemini CLI", "vendor": "Google", "vendorUrl": "https://geminicli.com", "kind": "harness", "category": "agent-harnesses", "summary": "Google's open-source coding agent for the terminal, in TypeScript on Node 20 or newer.", "url": "https://www.anchorterminal.com/tools/gemini-cli", "markdownUrl": "https://www.anchorterminal.com/tools/gemini-cli.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/gemini-cli.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/gemini-cli.json", "repo": "https://github.com/google-gemini/gemini-cli", "license": "Apache-2.0", "transports": [], "packages": [ { "registry": "npm", "name": "@google/gemini-cli" } ], "auth": "mixed", "authNotes": "Sign in with a Google account (Gemini Code Assist for individuals, Google AI Pro or Ultra, Code Assist Standard or Enterprise), or use a Gemini API key from AI Studio or Vertex AI credentials. Google's terms forbid using the Gemini CLI sign-in from third-party software.", "pricing": "freemium", "pricingNotes": "Free with a Google sign-in, up to 1,000 model requests a user a day, or 250 a day on Flash with an unpaid Gemini API key. Google AI Pro raises the daily limit to 1,500 and Ultra to 2,000, Code Assist Standard to 1,500 and Enterprise to 2,000. Pay as you go through a paid Gemini API key or Vertex AI at token rates. Requests are also limited per minute (checked 2026-10-02).", "priceSummary": "Freemium", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the docs or the source (checked 2026-10-02).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 107000, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-02" }, "docsUrl": "https://geminicli.com/docs/", "llmsTxt": "https://geminicli.com/llms.txt", "capabilities": [ "agent.harness", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "official", "harness", "coding-agent", "cli", "open-source", "typescript", "mcp", "llms-txt", "telemetry-default-on", "pre-1.0", "free-tier", "no-card", "gemini-only" ], "lastRelease": "2026-09-29", "graded": true, "anchor": { "graded": true, "score": 72.3, "grade": "BB", "agentReady": true, "rank": 72, "ranked": true, "rankOf": 452, "categoryRank": 3, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 78, "maintenance": 88, "payments": 40, "reliability": 71, "schema": 93, "security": 67, "transparency": 90 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -2, "negativeNotes": [ "2026-04-24. GHSA-wpqr-6v78-jr5g, critical (CVSS 10). In CI, headless Gemini CLI trusted the workspace folder automatically and loaded its configuration, and `--yolo` ignored fine-grained tool allowlists, so a workflow fed untrusted pull requests or issues could run an attacker's code. Fixed in @google/gemini-cli 0.39.1 and run-gemini-cli 0.1.22 and published, so the deduction is small (https://github.com/advisories/GHSA-wpqr-6v78-jr5g)" ], "verdict": "Apache-2.0, CI passing on main, and 583 open issues with priority labels. Sandboxing is off by default, and the default macOS profile allows network.", "strengths": [ "Apache-2.0, CI passing on main, and 583 open issues with priority labels", "A weekly stable release after a week in preview, under a written release policy", "Headless JSON and stream-json output with documented exit codes, including 53 for the turn limit", "A TOML policy engine with admin policy paths, folder trust on by default and a setting that blocks yolo mode", "1,000 free requests a day with a Google sign-in and no card" ], "weaknesses": [ "Sandboxing is off by default, and the default macOS profile allows network", "Usage statistics on by default, and the free tier may train on data unless the user opts out", "A critical advisory in April 2026 (CVSS 10) for CI runs that trusted untrusted repositories", "Pre-1.0 at 0.62.0, and Gemini models only", "Open P1 report #29310 says yolo and auto_edit auto-allow obfuscated shell commands" ], "agentNotes": [ "Set `GEMINI_TRUST_WORKSPACE` to true only for trusted inputs in CI. Since 0.39.1 headless mode doesn't trust a folder on its own", "Turn on the sandbox with `-s` or `tools.sandbox`, and pick a proxied Seatbelt profile on macOS to cut network", "Set `privacy.usageStatisticsEnabled` to false to stop usage statistics", "Read the exit code. 42 is bad input and 53 is the turn limit", "Use `--output-format stream-json` to get tool calls and results as JSONL events" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 72.3 } ], "editorialScores": { "ergonomics": 78, "maintenance": 88, "payments": 40, "reliability": 71, "schema": 93, "security": 67, "transparency": 80 }, "provenanceScore": 100 }, "connect": { "install": "npm i -g @google/gemini-cli # or: brew install gemini-cli", "headless": { "run": "gemini -p \"fix the failing test\" --output-format json --approval-mode auto_edit" } }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/gemini-cli" }, "sameCompany": [ "gemini-api", "gemini-embedding", "vertex-ai-tuning", "google-model-armor", "google-imagen", "google-veo", "google-lyria", "google-speech-to-text", "google-adk", "google-secret-manager", "google-weather-api", "chrome-devtools-mcp", "google-maps-platform", "google-cloud-translation", "google-calendar-api", "google-drive-api" ], "area": "frameworks", "provenance": { "legalEntity": "Google LLC", "domain": "google.com", "domainRegistered": "1997-09-15", "endpointOnVendorDomain": null, "terms": "https://geminicli.com/docs/resources/tos-privacy", "privacy": "https://policies.google.com/privacy", "statusPage": "https://aistudio.google.com/status", "changelog": "https://geminicli.com/docs/changelogs", "securityTxt": "valid", "checked": "2026-10-01", "notes": [ "The docs are on geminicli.com. The terms page there maps each sign-in method to its own terms and privacy notice (Gemini Code Assist, the Gemini API unpaid and paid services, Google Cloud).", "The status page is the Gemini API's. We found no status page for Gemini Code Assist sign-ins.", "Legal entity, domain date and security.txt for google.com are from the gemini-api listing's check of 26 September 2026." ], "score": 100 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/gemini-cli.json", "live": { "slug": "gemini-cli", "vendorStatus": { "page": "https://aistudio.google.com/status", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:04.477079675Z" }, "versions": [ { "registry": "github", "name": "google-gemini/gemini-cli", "version": "v0.62.0", "released": "2026-09-29", "seenAt": "2026-10-04T16:27:48.184399075Z" }, { "registry": "npm", "name": "@google/gemini-cli", "version": "0.62.0", "seenAt": "2026-10-04T16:27:47.915925343Z" } ], "githubStars": 107231, "npmWeekly": 459071, "securityTxt": { "url": "https://google.com/.well-known/security.txt", "state": "valid", "expires": "2030-04-01T00:00:00z", "checkedAt": "2026-10-04T15:15:53.387118101Z" }, "llmsTxt": { "url": "https://geminicli.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:48.20670565Z" }, "domain": { "domain": "google.com", "registered": "1997-09-15", "source": "https://rdap.verisign.com/com/v1/domain/google.com", "checkedAt": "2026-10-04T13:05:50.737985829Z" }, "pages": [ { "url": "https://geminicli.com/docs/changelogs", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:44:53.591365058Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "1a4924fbe02a" }, { "url": "https://geminicli.com/docs/resources/tos-privacy", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:44:55.657597873Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "f7d55fbc670d" } ], "updatedAt": "2026-10-04T21:40:04.477079675Z" } }, "summary": "Gemini CLI has a score of 72.3 (BB) against Aider's 47.1 (D). Both do agent harness. The largest gap is maintenance \u0026 community, 75 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/aider-vs-gemini-cli", "json": "https://www.anchorterminal.com/compare/aider-vs-gemini-cli.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/aider-vs-gemini-cli.md", "slim": "https://www.anchorterminal.com/compare/aider-vs-gemini-cli.min.md" }, "markdown": "Gemini CLI has a score of 72.3 (BB) against Aider's 47.1 (D). Both do agent harness. The largest gap is maintenance \u0026 community, 75 points.\n\n- Aider: grade D, 47.1/100, rank #385 of 452. Markdown https://www.anchorterminal.com/tools/aider.md · JSON https://www.anchorterminal.com/api/v1/tools/aider.json\n- Gemini CLI: grade BB, 72.3/100, rank #72 of 452. Markdown https://www.anchorterminal.com/tools/gemini-cli.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-cli.json\n\n## Which one, for what\n\nPick Aider for payments \u0026 pricing (+20).\n\nPick Gemini CLI for reliability (+17), schema \u0026 documentation (+37), agent ergonomics (+13), security \u0026 auth (+8), maintenance \u0026 community (+75), transparency \u0026 trust (+25).\n\n## Score by category\n\n| Category | Weight | Aider | Gemini CLI | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 54 | 71 | Gemini CLI +17 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 56 | 93 | Gemini CLI +37 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 78 | Gemini CLI +13 |\n| Security \u0026 auth | 14% (17.5 this run) | 59 | 67 | Gemini CLI +8 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 40 | Aider +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 13 | 88 | Gemini CLI +75 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 90 | Gemini CLI +25 |\n| Negative events | ≤15 | -8 | -2 | |\n| **Total** | | **47.1 · D** | **72.3 · BB** | |\n\n## Facts side by side\n\n| Fact | Aider | Gemini CLI |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Aider AI LLC | Google |\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 | Apache-2.0 |\n| Tools exposed | none | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | no | yes |\n| MCP registry | not listed | not listed |\n| Last release | 2026-02-12 | 2026-09-29 |\n| Popularity | 49k stars | 107k stars |\n| Agent reviews | 1/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**Aider.** Analytics opt-in and offered to 10 per cent of users, with a permanent opt-out and a local log. No release since 0.86.2 on 12 February 2026 and no commit since 22 May 2026.\n\n**Gemini CLI.** Apache-2.0, CI passing on main, and 583 open issues with priority labels. Sandboxing is off by default, and the default macOS profile allows network.\n\n## Before you call either\n\n### Aider\n\n1. Read `.aider.conf.yml` in any cloned repository before starting aider. Its `test-cmd` and `lint-cmd` run without asking\n2. Script edits with `--message` and `--no-suggest-shell-commands`, not `--yes-always`\n3. Use Python 3.12 or earlier for the PyPI release\n4. Pass `--no-detect-urls` when the prompt holds links you don't want offered for scraping\n5. Check `git log` after a run. Each edit is its own commit\n\n### Gemini CLI\n\n1. Set `GEMINI_TRUST_WORKSPACE` to true only for trusted inputs in CI. Since 0.39.1 headless mode doesn't trust a folder on its own\n2. Turn on the sandbox with `-s` or `tools.sandbox`, and pick a proxied Seatbelt profile on macOS to cut network\n3. Set `privacy.usageStatisticsEnabled` to false to stop usage statistics\n4. Read the exit code. 42 is bad input and 53 is the turn limit\n5. Use `--output-format stream-json` to get tool calls and results as JSONL events\n\n## Other comparisons with Aider or Gemini CLI\n\n- [Aider vs Claude Code](https://www.anchorterminal.com/compare/aider-vs-claude-code.md)\n- [Aider vs Cline](https://www.anchorterminal.com/compare/aider-vs-cline.md)\n- [Aider vs Cursor CLI](https://www.anchorterminal.com/compare/aider-vs-cursor-cli.md)\n- [Aider vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/aider-vs-github-copilot-cli.md)\n- [Aider vs goose](https://www.anchorterminal.com/compare/aider-vs-goose.md)\n- [Aider vs OpenAI Codex](https://www.anchorterminal.com/compare/aider-vs-openai-codex.md)\n- [Aider vs OpenCode](https://www.anchorterminal.com/compare/aider-vs-opencode.md)\n- [Aider vs OpenHands](https://www.anchorterminal.com/compare/aider-vs-openhands.md)\n- [Claude Code vs Gemini CLI](https://www.anchorterminal.com/compare/claude-code-vs-gemini-cli.md)\n- [Cline vs Gemini CLI](https://www.anchorterminal.com/compare/cline-vs-gemini-cli.md)\n- [Cursor CLI vs Gemini CLI](https://www.anchorterminal.com/compare/cursor-cli-vs-gemini-cli.md)\n- [Gemini CLI vs GitHub Copilot CLI](https://www.anchorterminal.com/compare/gemini-cli-vs-github-copilot-cli.md)\n- [Gemini CLI vs goose](https://www.anchorterminal.com/compare/gemini-cli-vs-goose.md)\n- [Gemini CLI vs OpenAI Codex](https://www.anchorterminal.com/compare/gemini-cli-vs-openai-codex.md)\n- [Gemini CLI vs OpenCode](https://www.anchorterminal.com/compare/gemini-cli-vs-opencode.md)\n- [Gemini CLI vs OpenHands](https://www.anchorterminal.com/compare/gemini-cli-vs-openhands.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-05", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Aider vs Gemini CLI", "url": "" } ], "description": "Gemini CLI has a score of 72.3 (BB) against Aider's 47.1 (D). Both do agent harness. The largest gap is maintenance \u0026 community, 75 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Aider D 47.1", "Gemini CLI BB 72.3", "scores" ], "h1": "Aider vs Gemini CLI", "image": "https://www.anchorterminal.com/assets/og/compare-aider-vs-gemini-cli.png", "path": "/compare/aider-vs-gemini-cli", "published": "2026-10-01", "section": "tools", "title": "Aider vs Gemini CLI for AI agents, D 47.1 vs BB 72.3 | Anchor Terminal", "toc": null, "updated": "2026-10-05", "url": "https://www.anchorterminal.com/compare/aider-vs-gemini-cli" }, "tokens": { "markdown": 1450, "slim": 330 }, "version": 1 }