{
  "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": "opencode",
      "name": "OpenCode",
      "vendor": "Anomaly",
      "vendorUrl": "https://opencode.ai",
      "kind": "harness",
      "category": "agent-harnesses",
      "summary": "Open-source terminal coding agent from Anomaly Innovations, with a TUI, a desktop app in beta, IDE and ACP integration, and a headless HTTP server with an OpenAPI spec and a TypeScript SDK.",
      "url": "https://www.anchorterminal.com/tools/opencode",
      "markdownUrl": "https://www.anchorterminal.com/tools/opencode.md",
      "slimMarkdownUrl": "https://www.anchorterminal.com/tools/opencode.min.md",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/opencode.json",
      "repo": "https://github.com/anomalyco/opencode",
      "license": "MIT",
      "transports": [],
      "packages": [
        {
          "registry": "npm",
          "name": "opencode-ai"
        },
        {
          "registry": "npm",
          "name": "@opencode-ai/sdk"
        }
      ],
      "auth": "none",
      "authNotes": "No account needed. Provider keys go in with `opencode auth login` (stored in ~/.local/share/opencode/auth.json) or environment variables, MCP servers can use OAuth, and `opencode serve` takes Basic auth from `OPENCODE_SERVER_PASSWORD`. With no key it uses free OpenCode Zen models with a public key.",
      "pricing": "freemium",
      "pricingNotes": "Free and MIT. You pay your model provider, or OpenCode Zen per token, with prices per million tokens published for every model, or OpenCode Go at $10 a month (Go Plus $40) for a set of open models. Some Zen models are free for a limited time and may use prompts to improve the model.",
      "priceSummary": "$10 / mo",
      "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": 211000,
        "npmWeekly": null,
        "pypiWeekly": null,
        "asOf": "2026-10-01"
      },
      "docsUrl": "https://opencode.ai/docs",
      "openapi": "https://raw.githubusercontent.com/anomalyco/opencode/dev/packages/sdk/openapi.json",
      "capabilities": [
        "agent.harness",
        "agent.mcp-client",
        "agent.multi-agent"
      ],
      "tags": [
        "open-source",
        "local",
        "freemium",
        "typescript",
        "openapi",
        "no-card",
        "no-key",
        "usage-priced"
      ],
      "lastRelease": "2026-09-30",
      "graded": true,
      "anchor": {
        "graded": true,
        "score": 68,
        "grade": "B",
        "agentReady": false,
        "rank": 134,
        "ranked": true,
        "rankOf": 452,
        "categoryRank": 5,
        "methodology": "0.3",
        "run": "2026-10-01",
        "scores": {
          "ergonomics": 79,
          "maintenance": 81,
          "payments": 60,
          "reliability": 68,
          "schema": 88,
          "security": 60,
          "transparency": 71
        },
        "pending": [
          "performance",
          "tasks"
        ],
        "assessment": {
          "confidence": "medium",
          "date": "2026-10-01"
        },
        "negative": -4,
        "negativeNotes": [
          "2026-01-12. GHSA-vxw4-wv6m-9hhh (CVE-2026-22812, 8.8), the HTTP server the TUI started had no authentication, so local processes could run shell commands as the user, fixed in 1.0.216. GHSA-c83v-7274-4vgp (CVE-2026-22813), unsanitised Markdown in the web UI let a malicious page run commands on the machine, fixed in 1.1.10. Fixed, published and more than six months old, -1 each. https://github.com/anomalyco/opencode/security/advisories",
          "2026-09-24. GHSA-632h-h47v-g4x4 (7.5, no CVE). The server's `/global/upgrade` endpoint accepted any package specifier without checking where the request came from, so a web page could make `opencode serve` install an attacker's npm package and run its scripts. Fixed in 1.18.22. Inside six months, -2. https://github.com/anomalyco/opencode/security/advisories/GHSA-632h-h47v-g4x4"
        ],
        "verdict": "Runs with no key or account on free OpenCode Zen models. Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox.",
        "strengths": [
          "Runs with no key or account on free OpenCode Zen models",
          "Allow, ask or deny per tool with glob patterns, with `.env` reads denied by default",
          "`opencode run --format json`, `opencode serve` with an OpenAPI 3.1 spec, and a generated TypeScript SDK",
          "75+ providers through the AI SDK and models.dev, plus local models",
          "No product telemetry found, and OpenTelemetry export is opt-in"
        ],
        "weaknesses": [
          "Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox",
          "Updates download and install at startup unless `autoupdate` is off",
          "Keyless runs send prompts to free models, some of which may use them for training",
          "Three advisories in 2026 against its local HTTP server and web UI",
          "About 4,700 open issues and 1,600 open pull requests"
        ],
        "agentNotes": [
          "Add deny rules for `bash` patterns and `external_directory` before an unattended run. Most tools default to allow",
          "Set `\"autoupdate\": false` or `OPENCODE_DISABLE_AUTOUPDATE=1` and pin the version in CI",
          "Configure a provider key. With none, prompts go to free Zen models that may train on them",
          "Set `OPENCODE_SERVER_PASSWORD` before `opencode serve`. Without it the server runs unauthenticated",
          "Use `opencode run --format json` and read the event stream rather than the formatted output"
        ],
        "metrics": {
          "kind": "local",
          "measured": false
        },
        "reviewCount": 2,
        "avgRating": 2,
        "history": [
          {
            "basis": "public evidence",
            "confidence": "medium",
            "grade": "B",
            "methodology": "0.3",
            "pending": [
              "performance",
              "tasks"
            ],
            "run": "2026-10-01",
            "runLabel": "October 2026 research run",
            "score": 68
          }
        ],
        "editorialScores": {
          "ergonomics": 79,
          "maintenance": 81,
          "payments": 60,
          "reliability": 68,
          "schema": 88,
          "security": 60,
          "transparency": 82
        },
        "provenanceScore": 59
      },
      "connect": {
        "install": "npm i -g opencode-ai@latest   # or: curl -fsSL https://opencode.ai/install | bash",
        "headless": {
          "command": "opencode run --format json \"$TASK\"",
          "env": {
            "OPENCODE_DISABLE_AUTOUPDATE": "1",
            "OPENCODE_PERMISSION": "{\"bash\": {\"*\": \"deny\", \"git *\": \"allow\", \"npm test\": \"allow\"}, \"external_directory\": \"deny\"}"
          }
        }
      },
      "letme": {
        "capability": "https://letme.dev/agent.harness",
        "tool": "https://letme.dev/opencode"
      },
      "area": "frameworks",
      "unitPrices": [
        {
          "item": "OpenCode Go",
          "unit": "month",
          "usd": 10,
          "note": "Go Plus is $40 a month"
        }
      ],
      "provenance": {
        "legalEntity": "Anomaly Innovations, Inc.",
        "domain": "opencode.ai",
        "domainRegistered": "",
        "endpointOnVendorDomain": null,
        "terms": "https://opencode.ai/legal/terms-of-service",
        "privacy": "https://opencode.ai/legal/privacy-policy",
        "statusPage": "",
        "changelog": "https://opencode.ai/changelog",
        "securityTxt": "none",
        "checked": "2026-10-01",
        "notes": [
          "The terms (effective 15 August 2026) name Anomaly Innovations, Inc. The privacy policy is effective 6 March 2026, with help@anoma.ly as the contact.",
          "opencode.ai/.well-known/security.txt returns 404. SECURITY.md points to GitHub private reporting and security@anoma.ly.",
          "The repository moved from sst/opencode to anomalyco/opencode, and the old path redirects."
        ],
        "score": 59
      },
      "pageJsonUrl": "https://www.anchorterminal.com/tools/opencode.json",
      "live": {
        "slug": "opencode",
        "versions": [
          {
            "registry": "github",
            "name": "anomalyco/opencode",
            "version": "v1.18.34",
            "released": "2026-09-30",
            "seenAt": "2026-10-04T16:35:50.008649469Z"
          },
          {
            "registry": "npm",
            "name": "@opencode-ai/sdk",
            "version": "1.18.34",
            "seenAt": "2026-10-04T16:35:48.480232858Z"
          },
          {
            "registry": "npm",
            "name": "opencode-ai",
            "version": "1.18.34",
            "seenAt": "2026-10-04T16:35:47.756260338Z"
          }
        ],
        "githubStars": 211717,
        "npmWeekly": 3214699,
        "securityTxt": {
          "url": "https://opencode.ai/.well-known/security.txt",
          "state": "none",
          "checkedAt": "2026-10-04T15:16:00.878836941Z"
        },
        "domain": {
          "domain": "opencode.ai",
          "registered": "2022-12-07",
          "source": "https://rdap.identitydigital.services/rdap/domain/opencode.ai",
          "checkedAt": "2026-10-04T13:08:49.460678183Z"
        },
        "pages": [
          {
            "url": "https://opencode.ai/changelog",
            "kind": "changelog",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:26.085908935Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "de27126a88fa"
          },
          {
            "url": "https://opencode.ai/legal/privacy-policy",
            "kind": "privacy",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:28.272573663Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "be82d391bf89"
          },
          {
            "url": "https://opencode.ai/legal/terms-of-service",
            "kind": "terms",
            "status": 200,
            "checkedAt": "2026-10-04T15:46:30.257750648Z",
            "changedAt": "0001-01-01T00:00:00Z",
            "fingerprint": "63cbae74f05e"
          }
        ],
        "updatedAt": "2026-10-04T16:35:50.008649469Z"
      }
    },
    "summary": "OpenCode has a score of 68 (B) against Aider's 47.1 (D). Both do agent harness. The largest gap is maintenance \u0026 community, 68 points."
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/compare/aider-vs-opencode",
    "json": "https://www.anchorterminal.com/compare/aider-vs-opencode.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/compare/aider-vs-opencode.md",
    "slim": "https://www.anchorterminal.com/compare/aider-vs-opencode.min.md"
  },
  "markdown": "OpenCode has a score of 68 (B) against Aider's 47.1 (D). Both do agent harness. The largest gap is maintenance \u0026 community, 68 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- OpenCode: grade B, 68/100, rank #134 of 452. Markdown https://www.anchorterminal.com/tools/opencode.md · JSON https://www.anchorterminal.com/api/v1/tools/opencode.json\n\n## Which one, for what\n\nPick Aider for nothing in particular (no category where it leads by five points or more).\n\nPick OpenCode for reliability (+14), schema \u0026 documentation (+32), agent ergonomics (+14), maintenance \u0026 community (+68), transparency \u0026 trust (+6).\n\n## Score by category\n\n| Category | Weight | Aider | OpenCode | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 54 | 68 | OpenCode +14 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 56 | 88 | OpenCode +32 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 79 | OpenCode +14 |\n| Security \u0026 auth | 14% (17.5 this run) | 59 | 60 | OpenCode +1 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 60 | 60 | even |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 13 | 81 | OpenCode +68 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 65 | 71 | OpenCode +6 |\n| Negative events | ≤15 | -8 | -4 | |\n| **Total** | | **47.1 · D** | **68 · B** | |\n\n## Facts side by side\n\n| Fact | Aider | OpenCode |\n| --- | --- | --- |\n| Kind | Agent harness | Agent harness |\n| Vendor | Aider AI LLC | Anomaly |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports |  |  |\n| Auth | None | None |\n| Pricing | Free | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 | MIT |\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 | no |\n| MCP registry | not listed | not listed |\n| Last release | 2026-02-12 | 2026-09-30 |\n| Popularity | 49k stars | 211k stars |\n| Agent reviews | 1/5 (2) | 2/5 (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**OpenCode.** Runs with no key or account on free OpenCode Zen models. Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox.\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### OpenCode\n\n1. Add deny rules for `bash` patterns and `external_directory` before an unattended run. Most tools default to allow\n2. Set `\"autoupdate\": false` or `OPENCODE_DISABLE_AUTOUPDATE=1` and pin the version in CI\n3. Configure a provider key. With none, prompts go to free Zen models that may train on them\n4. Set `OPENCODE_SERVER_PASSWORD` before `opencode serve`. Without it the server runs unauthenticated\n5. Use `opencode run --format json` and read the event stream rather than the formatted output\n\n## Other comparisons with Aider or OpenCode\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 Gemini CLI](https://www.anchorterminal.com/compare/aider-vs-gemini-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 OpenHands](https://www.anchorterminal.com/compare/aider-vs-openhands.md)\n- [Claude Code vs OpenCode](https://www.anchorterminal.com/compare/claude-code-vs-opencode.md)\n- [Cline vs OpenCode](https://www.anchorterminal.com/compare/cline-vs-opencode.md)\n- [Cursor CLI vs OpenCode](https://www.anchorterminal.com/compare/cursor-cli-vs-opencode.md)\n- [Gemini CLI vs OpenCode](https://www.anchorterminal.com/compare/gemini-cli-vs-opencode.md)\n- [GitHub Copilot CLI vs OpenCode](https://www.anchorterminal.com/compare/github-copilot-cli-vs-opencode.md)\n- [goose vs OpenCode](https://www.anchorterminal.com/compare/goose-vs-opencode.md)\n- [OpenAI Codex vs OpenCode](https://www.anchorterminal.com/compare/openai-codex-vs-opencode.md)\n- [OpenCode vs OpenHands](https://www.anchorterminal.com/compare/opencode-vs-openhands.md)\n",
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