{ "data": { "a": { "slug": "openai-agents-api", "name": "OpenAI Agents API", "vendor": "OpenAI", "vendorUrl": "https://openai.com/index/introducing-the-agents-api/", "kind": "http-api", "category": "agent-harnesses", "summary": "The OpenAI Agents API runs OpenAI's managed Codex harness as a hosted service. One call creates a session with a model, tools, MCP servers, subagents and an OpenAI-hosted or self-hosted sandbox, and OpenAI runs the loop.", "url": "https://www.anchorterminal.com/tools/openai-agents-api", "markdownUrl": "https://www.anchorterminal.com/tools/openai-agents-api.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/openai-agents-api.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/openai-agents-api.json", "dns": "openai-agents-api.grade.anchorterminal.com", "license": "Proprietary hosted API under OpenAI's Services Agreement. The SDKs are Apache 2.0", "transports": [ "https" ], "remoteUrl": "https://api.openai.com/v1/agents/sessions", "packages": [ { "registry": "pypi", "name": "openai" }, { "registry": "npm", "name": "openai" } ], "auth": "api-key", "authNotes": "An OpenAI project API key as a Bearer token, with the header `OpenAI-Beta: agents=v1`. Project keys can be restricted per endpoint or read-only, and service accounts and workload identity federation are available, per the openai-api listing. Signing up and creating a key need a person in a browser.", "pricing": "usage", "pricingNotes": "No fee for the API itself. Model tokens are billed at the chosen model's API rates, OpenAI tools at their built-in rates (web search $10.00 per 1,000 calls plus content tokens), and OpenAI-hosted sandboxes at container rates, $0.03 for 1 GB, $0.12 for 4 GB, $0.48 for 16 GB and $1.92 for 64 GB per 20-minute session, billed by the minute with a 5-minute minimum. Since 9 October sandbox compute is billed only during active turns (checked 2026-11-06).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Agents API guides or on OpenAI's pricing page; billing is to an OpenAI account (checked 2026-11-06).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://developers.openai.com/api/docs/guides/agents-api/overview", "llmsTxt": "https://developers.openai.com/api/docs/llms.txt", "capabilities": [ "agent.harness" ], "tags": [ "official", "hosted", "beta", "usage-priced", "llms-txt", "status-page", "mcp-client", "sandbox", "subagents", "webhooks", "soc2", "iso27001", "bug-bounty" ], "lastRelease": "2026-10-16", "graded": true, "anchor": { "graded": true, "score": 73.3, "grade": "BB", "agentReady": true, "rank": 99, "ranked": true, "rankOf": 1354, "categoryRank": 2, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 87, "payments": 30, "reliability": 60, "schema": 88, "security": 87, "transparency": 85 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-06" }, "negative": 0, "verdict": "OpenAI's hosted agent runtime, the Codex harness behind one session call, with MCP, functions, web search, computer use, subagents and sandboxes on OpenAI or your own infrastructure. Documentation, errors and SDKs are thorough. It's still public beta, can't use Zero Data Retention and keeps data in the United States only.", "bestFor": "Teams that want OpenAI to run the agent loop, with sandboxes, MCP tools and subagents, and are fine with a beta API, US-only data residency and no Zero Data Retention.", "strengths": [ "One session call configures the model, tools, MCP servers, subagents and the sandbox, and OpenAI runs and recovers the loop", "Sandboxes on OpenAI or self-hosted, with guides for ten providers including E2B, Daytona, Modal, Cloudflare and Vercel", "An errors guide with codes per status and turn, Retry-After and a check-before-retry procedure", "Webhooks, streamed events, tracing and usage views for each session", "SDK examples in Python, JavaScript, Go, Java and Ruby", "Status page with its own Agents component" ], "weaknesses": [ "Public beta since 10 September 2026 behind the agents=v1 beta header, with no GA date", "Not eligible for Zero Data Retention, and data residency is United States only", "No idempotency key for session or turn requests; retries depend on checking state first", "One API-wide major outage on 29 September included it, plus several smaller incidents since release", "No retention period stated for published artifacts after a sandbox expires" ], "agentNotes": [ "POST https://api.openai.com/v1/agents/sessions with a project key and the header OpenAI-Beta: agents=v1, or use client.beta.agents in the SDKs", "Before retrying, retrieve the session and turn and check which actions completed, since there's no idempotency key", "Set the sandbox network to restricted with an allowlist of up to 100 hosts when the agent doesn't need the open web", "Save files from /workspace/outputs before deleting a session; no retention period is stated for artifacts", "Don't send data that needs Zero Data Retention or non-US residency; the Agents API supports neither" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 73.3 } ], "editorialScores": { "ergonomics": 80, "maintenance": 87, "payments": 30, "reliability": 60, "schema": 88, "security": 87, "transparency": 75 }, "provenanceScore": 95, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl https://api.openai.com/v1/agents/sessions \\\n -H \"Authorization: Bearer $OPENAI_API_KEY\" \\\n -H \"OpenAI-Beta: agents=v1\" \\\n -H \"Content-Type: application/json\" \\\n -d @session.json # model, tools, environment and input, per the quickstart" }, "letme": { "capability": "https://letme.dev/agent.harness", "tool": "https://letme.dev/openai-agents-api" }, "sameCompany": [ "openai-api", "openai-embeddings", "openai-guardrails", "openai-moderation", "openai-image-api", "openai-sora", "openai-speech-to-text", "gpt-live", "openai-realtime", "openai-agents-sdk", "openai-decisions-api", "openai-codex", "gpt-oss-120b", "gpt-oss-20b" ], "area": "frameworks", "provenance": { "legalEntity": "OpenAI OpCo, LLC", "domain": "openai.com", "domainRegistered": "2007-01-19", "domainNote": "openai.com was registered in 2007, before OpenAI existed, per the openai-api listing.", "endpointOnVendorDomain": true, "terms": "https://openai.com/policies/services-agreement/", "privacy": "https://openai.com/policies/privacy-policy/", "statusPage": "https://status.openai.com", "changelog": "https://developers.openai.com/api/docs/changelog", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "The endpoint is on api.openai.com, the same host as the rest of the OpenAI API. Terms, privacy, security.txt and the domain are the openai-api listing's readings." ], "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/openai-agents-api.json", "live": { "slug": "openai-agents-api", "probe": { "target": "https://api.openai.com/v1/agents/sessions", "method": "get", "lastAt": "2026-11-06T09:47:41.371658489Z", "lastOk": true, "lastStatus": 400, "lastMs": 162, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 148, "p95ms24h": 166, "samples24h": 47, "samples30d": 47, "days": [ { "date": "2026-11-06", "probes": 47, "ok": 47 } ] }, "vendorStatus": { "page": "https://status.openai.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-06T09:43:26.425829944Z" }, "updatedAt": "2026-11-06T09:47:41.371658489Z" } }, "answer": "OpenAI Agents API scores 73.3 (BB) on agent readiness against OpenCode's 68.8 (B), and leads in 4 of 7 scored categories. OpenCode leads on reliability and payments \u0026 pricing.", "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, desktop app, IDE and ACP integration, and a headless HTTP server with an OpenAPI spec. Version 2, released in October 2026, is an opt-in upgrade.", "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", "dns": "opencode.grade.anchorterminal.com", "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/v1/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": "2026-10-28", "graded": true, "anchor": { "graded": true, "score": 68.8, "grade": "B", "agentReady": false, "rank": 247, "ranked": true, "rankOf": 1354, "categoryRank": 6, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 79, "maintenance": 81, "payments": 60, "reliability": 72, "schema": 88, "security": 60, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "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.", "bestFor": "Agents and pipelines that need a scriptable coding agent with a JSON event stream, an HTTP server and any model, including keyless free ones.", "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 server and web UI, and CVE-2026-88624 against worktree removal, still in 1.19.5's code", "OpenCode 2 changes the server API and plugin API, and allows paths outside the project by default" ], "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", "Install `opencode-ai` for the 1.x server API and SDK. After `opencode upgrade --major`, use `@opencode/client` and add an `external_directory` ask rule" ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 2, "avgRating": 2, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 68.8 } ], "editorialScores": { "ergonomics": 79, "maintenance": 81, "payments": 60, "reliability": 72, "schema": 88, "security": 60, "transparency": 82 }, "provenanceScore": 59, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-10-27", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "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": "2026-11-01", "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 (re-read on 1 November 2026). 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": "v1.19.5", "released": "2026-10-28", "seenAt": "2026-11-05T21:54:18.743010502Z" }, { "registry": "npm", "name": "@opencode-ai/sdk", "version": "1.19.5", "seenAt": "2026-11-05T21:54:17.324424464Z" }, { "registry": "npm", "name": "opencode-ai", "version": "1.19.5", "seenAt": "2026-11-05T21:54:16.511240435Z" } ], "githubStars": 224784, "npmWeekly": 4292609, "securityTxt": { "url": "https://opencode.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-11-05T15:56:03.950371703Z" }, "domain": { "domain": "opencode.ai", "registered": "2022-12-07", "source": "https://rdap.identitydigital.services/rdap/domain/opencode.ai", "checkedAt": "2026-11-01T14:19:08.319256497Z" }, "pages": [ { "url": "https://opencode.ai/changelog", "kind": "deprecations", "status": 200, "checkedAt": "2026-11-05T13:00:17.307733601Z", "changedAt": "2026-11-01T06:48:53.681077402Z", "fingerprint": "53d410e57b3b" }, { "url": "https://anoma.ly/notes/opencode-2-0/", "kind": "deprecations", "status": 304, "checkedAt": "2026-11-05T12:46:11.444865748Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c759f58f9191" }, { "url": "https://opencode.ai/legal/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-05T13:00:19.502216259Z", "changedAt": "2026-11-02T07:21:48.731562383Z", "fingerprint": "9cf06c360948" }, { "url": "https://opencode.ai/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-05T13:00:21.519796489Z", "changedAt": "2026-11-02T07:21:51.374638564Z", "fingerprint": "d73bb8088384" } ], "github": { "repo": "anomalyco/opencode", "checkedAt": "2026-11-02T08:30:39.073309468Z", "stars": 223939, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T06:25:10Z", "openIssues": 2336, "openPRs": 1425, "issuesOpened90d": 10155, "issuesClosed90d": 11578, "prsMerged90d": 4754, "ci": { "branch": "dev", "runs": 50, "success": 48, "failure": 0, "other": 2, "latest": "success", "latestAt": "2026-11-02T06:25:21Z" }, "advisories": [ { "ghsa": "GHSA-632h-h47v-g4x4", "severity": "high", "published": "2026-09-24T13:36:45Z" }, { "ghsa": "GHSA-c83v-7274-4vgp", "cve": "CVE-2026-22813", "severity": "critical", "published": "2026-01-12T21:32:40Z" }, { "ghsa": "GHSA-vxw4-wv6m-9hhh", "cve": "CVE-2026-22812", "severity": "high", "published": "2026-01-12T19:43:04Z" } ] }, "updatedAt": "2026-11-05T21:54:18.743010502Z" } }, "edges": [ { "by": 30, "category": "payments", "leads": "opencode", "name": "Payments \u0026 pricing", "reasons": { "a": "No machine payment protocol (0). Model, tool and container prices published without a login, and no fee for the API itself (20). The Free tier reading of the openai-api listing, half (10). Sign-up in a browser (0). 0 + 20 + 10 + 0 = 30.", "b": "No payment protocol (0). Scored on OpenCode Zen and Go. Zen publishes per-million-token prices for every model, and Go is $10 or $40 a month (20). The MIT package and the free Zen models need no card (20). With no key configured it loads the free Zen models with a public key, so an agent can install it and run a task with no signup at all (20)." }, "scores": { "a": 30, "b": 60 } }, { "by": 27, "category": "security", "leads": "openai-agents-api", "name": "Security \u0026 auth", "reasons": { "a": "Project keys with restricted per-endpoint permissions, service accounts and workload identity, per the openai-api listing; we didn't confirm a key can be limited to /v1/agents (27 of 30). Automatic review for approvals, a sandbox network restricted to a host allowlist, vaults for secrets and a sandbox security guide (17 of 20). The agent reads web pages, MCP results and browser content; the sandbox security guide and approval flow are the mitigations, with no prompt-injection guide of its own found (8 of 15). Tracing, observability and usage per session and admin audit logs (15). SOC 2 Type 2, ISO 27001 family, Bugcrowd bounty and a disclosure policy, per the openai-api listing (20). Not ZDR-eligible and US residency only, recorded under transparency. 27 + 17 + 8 + 15 + 20 = 87.", "b": "Harness reading of the framework checklist, used for all five harnesses in this batch. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. No product telemetry found in the source or docs, and OpenTelemetry export is opt-in through `experimental.openTelemetry`. It fetches the model list from models.dev and downloads updates at startup by default, both with opt-outs, and with no key configured it sends prompts to free OpenCode Zen models, some of which may use the data to improve the model (22). Allow, ask or deny per tool with glob patterns, `.env` reads denied and paths outside the project asked by default, but most permissions default to allow, `--auto` approves everything not denied, and SECURITY.md says the permission system is not a sandbox (9). SECURITY.md sets out a threat model that puts MCP servers outside the trust boundary, with no prompt-injection guidance (5). Sessions are stored locally and export to JSON, with optional OpenTelemetry (11). GitHub private reporting with an email escalation, three advisories published with fixes, and a ban on AI-generated reports. No security.txt (13). CVE-2026-88624 (published 22 September, CVSS 9.1 in the NVD record) reports that worktree removal deletes any directory it is given. In 1.19.5, as in 1.19.3, `Worktree.remove` still deletes an existing path that isn't a registered worktree. The call needs access to the server API, which SECURITY.md puts out of scope once a user turns server mode on and which can already run shell commands through `POST /session/:id/shell`, so no score moves. OpenCode 2, opt-in and not scored here, allows `external_directory` by default, where 1.x asks." }, "scores": { "a": 87, "b": 60 } }, { "by": 14, "category": "transparency", "leads": "openai-agents-api", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed service with clear terms, Apache-2.0 SDKs (15). Session state retained until deleted, deletable sessions and artifacts, not ZDR-eligible, US residency only, and the data-controls guide agrees; no retention period for artifacts after a sandbox expires (25 of 30). Dated deprecation notices with minimum periods for GA models; a beta API can change faster (15 of 20). Subprocessors and processing countries listed, per the openai-api listing (20). 15 + 25 + 15 + 20 = 75.", "b": "MIT (30). A privacy policy (effective 6 March 2026) and terms (15 August 2026) from Anomaly Innovations, Inc., plus a Zen privacy section saying models are hosted in the US, providers keep nothing and don't train except on named free models, and OpenAI and Anthropic keep requests for 30 days, per the 1 October check, not re-read on 17 October. The general retention line is as long as necessary (22). Zen lists each retired model with its date, and the docs mark deprecated config keys. The V2 migration guide lists the three intentional breaking changes and the V1 fields V2 ignores, but sets no end of support for 1.x (15). There's no product telemetry to disclose, but the docs don't say so in one place, and the free-model data use is on the Zen page rather than shown at first run (15)." }, "scores": { "a": 85, "b": 71 } }, { "by": 12, "category": "reliability", "leads": "opencode", "name": "Reliability", "reasons": { "a": "Read as a hosted API. status.openai.com has an Agents component under APIs (20). Since release on 10 September (57 days, not 90), the feed names the Agents API in a degraded-performance incident on 14 September, the elevated errors across ChatGPT, Codex and the API on 29 September (the openai-api listing reads that one as a major, 17:52 to 23:14 UTC), computer use issues and degraded workspace agents on 6 and 7 October, degraded performance across the APIs for 22 minutes on 21 October, and overbilling for hosted containers on 19 September. One major, the rest minor (10). Rate limits come from the shared guide, published per tier and model with headers, and the errors page adds a Files API allowance on session creation (15). 429 and 503 guidance with Retry-After, capped backoff and a check-then-retry procedure for turns (15). The Scale Tier SLA in the openai-api listing isn't shown to cover a beta API (0). Public beta behind the agents=v1 header (0). 20 + 10 + 15 + 15 + 0 + 0 = 60.", "b": "Read as a local package, graded on the 1.x line that `npm i -g opencode-ai` and the opencode.ai/install script put on a machine. `opencode-ai` 1.19.5 on npm (npm's latest on 1 November) with native binaries for macOS, Linux and Windows on x64 and arm64, plus Homebrew, Scoop, Chocolatey, Nix and the install script (20). A test workflow runs on the repository. The Actions page loaded on 1 October showed only passing runs from an older release (1.3.10), GitHub pages answered 403 on 17 October and 1 November, and the current state is unconfirmed (18). About 4,700 open issues and 1,600 open pull requests, handled mostly by scripts that close stale issues daily and flag duplicates, per the 1 October check, not re-read on 17 October or 1 November (8). Releases come almost daily with notes on GitHub and a changelog page. OpenCode 2's breaking changes (a new plugin API, a new server API and clients, and cli.json in place of tui.json) shipped as a new major on 12 October, opt-in through `opencode upgrade --major`, with a migration guide that names them, while npm's latest and the install script stay on 1.x. The 1.19.4 and 1.19.5 commits change no SDK code and mark no breaking change, but the 1.x release notes weren't read for a breaking-change section (11). 1.19, stable (15)." }, "scores": { "a": 60, "b": 72 } }, { "by": 6, "category": "maintenance", "leads": "openai-agents-api", "name": "Maintenance \u0026 community", "reasons": { "a": "Closed API. Last dated change 16 October 2026, Ultrafast mode and document skills (30). Four dated changelog entries in the 57 days since release, 10 September, 29 September, 9 October and 16 October (20). Changelog and help centre, as the openai-api listing reads them (12 of 15). Official SDKs carry beta.agents (15). SDK CI, per the openai-api listing (10). 30 + 20 + 12 + 15 + 10 = 87.", "b": "1.19.5 on npm on 2026-10-28, 4 days before the check, and v2.2.5 tagged on 30 October (30). 30 releases on the 1.x line (1.18.12 to 1.19.5) in the 90 days to 1 November, plus 44 v2 tags (20). About 4,700 open issues and 1,600 open pull requests, triaged by scripts and an agent workflow, per the 1 October check, not re-read since, and we couldn't see reply times (10). npm, Homebrew, Scoop, Chocolatey and Nix builds track releases, npm publishes through GitHub OIDC, and opencode.ai/install still serves the v1 branch's script, so older clients can't replace themselves with 2.x by accident (14). Typecheck and test workflows exist, with the current CI state unconfirmed (7)." }, "scores": { "a": 87, "b": 81 } } ], "facts": [ { "a": "HTTP API", "b": "Agent harness", "name": "Kind" }, { "a": "OpenAI", "b": "Anomaly", "name": "Vendor" }, { "a": "https://api.openai.com/v1/agents/sessions", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "https", "b": "", "name": "Transports" }, { "a": "API key", "b": "None", "name": "Auth" }, { "a": "Pay per use", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary hosted API under OpenAI's Services Agreement. The SDKs are Apache 2.0", "b": "MIT", "name": "Licence" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-10-16", "b": "2026-10-28", "name": "Last release" }, { "a": "couldn't be read", "b": "2026-08-15", "name": "Terms last updated" }, { "a": "couldn't be read", "b": "2026-03-06", "name": "Privacy policy last updated" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict automated access" }, { "a": "couldn't be read", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "couldn't be read", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "couldn't be read", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "211k stars", "name": "Popularity" }, { "a": "none", "b": "2/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "OpenAI Agents API scores 73.3 (BB) on agent readiness against OpenCode's 68.8 (B), and leads in 4 of 7 scored categories. OpenCode leads on reliability and payments \u0026 pricing.", "question": "Which is better for AI agents, OpenAI Agents API or OpenCode?" }, { "answer": "OpenAI Agents API has a hosted endpoint at https://api.openai.com/v1/agents/sessions. No hosted endpoint is listed for OpenCode.", "question": "Can an agent call OpenAI Agents API and OpenCode without installing anything?" }, { "answer": "No open-source release is listed for OpenAI Agents API. OpenCode is open source (MIT).", "question": "Are OpenAI Agents API and OpenCode open source?" } ], "goodFor": [ { "aheadOn": [ "Security \u0026 auth, 87 against 60", "Maintenance \u0026 community, 87 against 81", "Transparency \u0026 trust, 85 against 71" ], "also": [ "Agent-ready, a grade of BB or better", "A hosted endpoint, with nothing to install", "No incidents deducted, where OpenCode loses 4 points for them" ], "goodFor": "Teams that want OpenAI to run the agent loop, with sandboxes, MCP tools and subagents, and are fine with a beta API, US-only data residency and no Zero Data Retention.", "slug": "openai-agents-api", "watchFor": "Public beta since 10 September 2026 behind the agents=v1 beta header, with no GA date" }, { "aheadOn": [ "Reliability, 72 against 60", "Payments \u0026 pricing, 60 against 30" ], "also": [ "No key needed to call it", "Free to start without a card", "Open source" ], "goodFor": "Agents and pipelines that need a scriptable coding agent with a JSON event stream, an HTTP server and any model, including keyless free ones.", "slug": "opencode", "watchFor": "Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox" } ], "history": { "openai-agents-api": null, "opencode": [ { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.3, "from": 68.5, "fromGrade": "B", "to": 68.8, "toGrade": "B" }, { "causes": [ "product" ], "date": "2026-10-17", "delta": 0.8, "from": 67.7, "fromGrade": "B", "to": 68.5, "toGrade": "B" }, { "causes": [ "method" ], "date": "2026-10-08", "delta": -0.3, "from": 68, "fromGrade": "B", "to": 67.7, "toGrade": "B" } ] }, "job": { "capability": "agent.harness", "name": "Agent harnesses" }, "others": [ { "json": "https://www.anchorterminal.com/compare/agent-zero-vs-openai-agents-api.json", "title": "Agent Zero vs OpenAI Agents API", "url": "https://www.anchorterminal.com/compare/agent-zero-vs-openai-agents-api" }, { "json": 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"OpenCode vs Prime Agent", "url": "https://www.anchorterminal.com/compare/opencode-vs-prime-agent" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-qoder-cli.json", "title": "OpenCode vs Qoder CLI", "url": "https://www.anchorterminal.com/compare/opencode-vs-qoder-cli" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-qwen-code.json", "title": "OpenCode vs Qwen Code", "url": "https://www.anchorterminal.com/compare/opencode-vs-qwen-code" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-reflection-mirror.json", "title": "OpenCode vs Mirror CLI", "url": "https://www.anchorterminal.com/compare/opencode-vs-reflection-mirror" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-rovo-dev-cli.json", "title": "OpenCode vs Rovo Dev CLI", "url": "https://www.anchorterminal.com/compare/opencode-vs-rovo-dev-cli" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-unstoppable.json", "title": "OpenCode vs Unstoppable", "url": "https://www.anchorterminal.com/compare/opencode-vs-unstoppable" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-vibe-trading.json", "title": "OpenCode vs Vibe-Trading", "url": "https://www.anchorterminal.com/compare/opencode-vs-vibe-trading" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-warp.json", "title": "OpenCode vs Warp (Warp Agent CLI and the Oz Agent API)", "url": "https://www.anchorterminal.com/compare/opencode-vs-warp" }, { "json": "https://www.anchorterminal.com/compare/clawboo-vs-opencode.json", "title": "Clawboo vs OpenCode", "url": "https://www.anchorterminal.com/compare/clawboo-vs-opencode" }, { "json": "https://www.anchorterminal.com/compare/cli-manager-vs-opencode.json", "title": "CLI Manager vs OpenCode", "url": "https://www.anchorterminal.com/compare/cli-manager-vs-opencode" }, { "json": "https://www.anchorterminal.com/compare/harness-autonomous-vs-opencode.json", "title": "Harness vs OpenCode", "url": "https://www.anchorterminal.com/compare/harness-autonomous-vs-opencode" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-paperclip.json", "title": "OpenCode vs Paperclip", "url": "https://www.anchorterminal.com/compare/opencode-vs-paperclip" }, { "json": "https://www.anchorterminal.com/compare/opencode-vs-parallax-agents.json", "title": "OpenCode vs Parallax", "url": "https://www.anchorterminal.com/compare/opencode-vs-parallax-agents" } ], "panel": null, "scores": [ { "by": 12, "edge": "opencode", "key": "reliability", "name": "Reliability", "openai-agents-api": 60, "opencode": 72, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 0, "edge": "", "key": "schema", "name": "Schema \u0026 documentation", "openai-agents-api": 88, "opencode": 88, "weight": 13 }, { "by": 1, "edge": "openai-agents-api", "key": "ergonomics", "name": "Agent ergonomics", "openai-agents-api": 80, "opencode": 79, "weight": 13 }, { "by": 27, "edge": "openai-agents-api", "key": "security", "name": "Security \u0026 auth", "openai-agents-api": 87, "opencode": 60, "weight": 14 }, { "by": 30, "edge": "opencode", "key": "payments", "name": "Payments \u0026 pricing", "openai-agents-api": 30, "opencode": 60, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 6, "edge": "openai-agents-api", "key": "maintenance", "name": "Maintenance \u0026 community", "openai-agents-api": 87, "opencode": 81, "weight": 7 }, { "by": 14, "edge": "openai-agents-api", "key": "transparency", "name": "Transparency \u0026 trust", "openai-agents-api": 85, "opencode": 71, "weight": 7 } ], "summary": "OpenAI Agents API scores 73.3 (BB) on agent readiness against OpenCode's 68.8 (B), and leads in 4 of 7 scored categories. OpenCode leads on reliability and payments \u0026 pricing. Both do agent harnesses.", "tasks": null, "tutorials": [], "verdicts": { "openai-agents-api": "OpenAI's hosted agent runtime, the Codex harness behind one session call, with MCP, functions, web search, computer use, subagents and sandboxes on OpenAI or your own infrastructure. Documentation, errors and SDKs are thorough. It's still public beta, can't use Zero Data Retention and keeps data in the United States only.", "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." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode", "json": "https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode.min.md" }, "markdown": "OpenAI Agents API scores 73.3 (BB) on agent readiness against OpenCode's 68.8 (B), and leads in 4 of 7 scored categories. OpenCode leads on reliability and payments \u0026 pricing. Both do agent harnesses.\n\n- OpenAI Agents API: grade BB, 73.3/100, rank #99 of 1354. Markdown https://www.anchorterminal.com/tools/openai-agents-api.md · JSON https://www.anchorterminal.com/api/v1/tools/openai-agents-api.json\n- OpenCode: grade B, 68.8/100, rank #247 of 1354. Markdown https://www.anchorterminal.com/tools/opencode.md · JSON https://www.anchorterminal.com/api/v1/tools/opencode.json\n- Best agent harnesses and coding agents: https://www.anchorterminal.com/best/agent-harnesses/index.md\n- All 1041 harnesses comparisons: https://www.anchorterminal.com/compare/agent-harnesses/index.md\n\n## Which one, for what\n\n### OpenAI Agents API (BB)\n\nGood for: Teams that want OpenAI to run the agent loop, with sandboxes, MCP tools and subagents, and are fine with a beta API, US-only data residency and no Zero Data Retention.\n\nAhead on:\n- Security \u0026 auth, 87 against 60\n- Maintenance \u0026 community, 87 against 81\n- Transparency \u0026 trust, 85 against 71\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- A hosted endpoint, with nothing to install\n- No incidents deducted, where OpenCode loses 4 points for them\n\nWatch for: Public beta since 10 September 2026 behind the agents=v1 beta header, with no GA date\n\n### OpenCode (B)\n\nGood for: Agents and pipelines that need a scriptable coding agent with a JSON event stream, an HTTP server and any model, including keyless free ones.\n\nAhead on:\n- Reliability, 72 against 60\n- Payments \u0026 pricing, 60 against 30\n\nAlso in its favour:\n- No key needed to call it\n- Free to start without a card\n- Open source\n\nWatch for: Most permissions default to allow, and SECURITY.md says the permission system is not a sandbox\n\n\n## Why the edge\n\n### Payments \u0026 pricing: OpenCode +30\n\n- OpenAI Agents API (30): No machine payment protocol (0). Model, tool and container prices published without a login, and no fee for the API itself (20). The Free tier reading of the openai-api listing, half (10). Sign-up in a browser (0). 0 + 20 + 10 + 0 = 30.\n- OpenCode (60): No payment protocol (0). Scored on OpenCode Zen and Go. Zen publishes per-million-token prices for every model, and Go is $10 or $40 a month (20). The MIT package and the free Zen models need no card (20). With no key configured it loads the free Zen models with a public key, so an agent can install it and run a task with no signup at all (20).\n\n### Security \u0026 auth: OpenAI Agents API +27\n\n- OpenAI Agents API (87): Project keys with restricted per-endpoint permissions, service accounts and workload identity, per the openai-api listing; we didn't confirm a key can be limited to /v1/agents (27 of 30). Automatic review for approvals, a sandbox network restricted to a host allowlist, vaults for secrets and a sandbox security guide (17 of 20). The agent reads web pages, MCP results and browser content; the sandbox security guide and approval flow are the mitigations, with no prompt-injection guide of its own found (8 of 15). Tracing, observability and usage per session and admin audit logs (15). SOC 2 Type 2, ISO 27001 family, Bugcrowd bounty and a disclosure policy, per the openai-api listing (20). Not ZDR-eligible and US residency only, recorded under transparency. 27 + 17 + 8 + 15 + 20 = 87.\n- OpenCode (60): Harness reading of the framework checklist, used for all five harnesses in this batch. 30 for what leaves the machine by default, 20 for approvals and sandboxing, 15 for prompt-injection posture, 15 for audit and 20 for the security programme. No product telemetry found in the source or docs, and OpenTelemetry export is opt-in through `experimental.openTelemetry`. It fetches the model list from models.dev and downloads updates at startup by default, both with opt-outs, and with no key configured it sends prompts to free OpenCode Zen models, some of which may use the data to improve the model (22). Allow, ask or deny per tool with glob patterns, `.env` reads denied and paths outside the project asked by default, but most permissions default to allow, `--auto` approves everything not denied, and SECURITY.md says the permission system is not a sandbox (9). SECURITY.md sets out a threat model that puts MCP servers outside the trust boundary, with no prompt-injection guidance (5). Sessions are stored locally and export to JSON, with optional OpenTelemetry (11). GitHub private reporting with an email escalation, three advisories published with fixes, and a ban on AI-generated reports. No security.txt (13). CVE-2026-88624 (published 22 September, CVSS 9.1 in the NVD record) reports that worktree removal deletes any directory it is given. In 1.19.5, as in 1.19.3, `Worktree.remove` still deletes an existing path that isn't a registered worktree. The call needs access to the server API, which SECURITY.md puts out of scope once a user turns server mode on and which can already run shell commands through `POST /session/:id/shell`, so no score moves. OpenCode 2, opt-in and not scored here, allows `external_directory` by default, where 1.x asks.\n\n### Transparency \u0026 trust: OpenAI Agents API +14\n\n- OpenAI Agents API (85): Closed service with clear terms, Apache-2.0 SDKs (15). Session state retained until deleted, deletable sessions and artifacts, not ZDR-eligible, US residency only, and the data-controls guide agrees; no retention period for artifacts after a sandbox expires (25 of 30). Dated deprecation notices with minimum periods for GA models; a beta API can change faster (15 of 20). Subprocessors and processing countries listed, per the openai-api listing (20). 15 + 25 + 15 + 20 = 75.\n- OpenCode (71): MIT (30). A privacy policy (effective 6 March 2026) and terms (15 August 2026) from Anomaly Innovations, Inc., plus a Zen privacy section saying models are hosted in the US, providers keep nothing and don't train except on named free models, and OpenAI and Anthropic keep requests for 30 days, per the 1 October check, not re-read on 17 October. The general retention line is as long as necessary (22). Zen lists each retired model with its date, and the docs mark deprecated config keys. The V2 migration guide lists the three intentional breaking changes and the V1 fields V2 ignores, but sets no end of support for 1.x (15). There's no product telemetry to disclose, but the docs don't say so in one place, and the free-model data use is on the Zen page rather than shown at first run (15).\n\n### Reliability: OpenCode +12\n\n- OpenAI Agents API (60): Read as a hosted API. status.openai.com has an Agents component under APIs (20). Since release on 10 September (57 days, not 90), the feed names the Agents API in a degraded-performance incident on 14 September, the elevated errors across ChatGPT, Codex and the API on 29 September (the openai-api listing reads that one as a major, 17:52 to 23:14 UTC), computer use issues and degraded workspace agents on 6 and 7 October, degraded performance across the APIs for 22 minutes on 21 October, and overbilling for hosted containers on 19 September. One major, the rest minor (10). Rate limits come from the shared guide, published per tier and model with headers, and the errors page adds a Files API allowance on session creation (15). 429 and 503 guidance with Retry-After, capped backoff and a check-then-retry procedure for turns (15). The Scale Tier SLA in the openai-api listing isn't shown to cover a beta API (0). Public beta behind the agents=v1 header (0). 20 + 10 + 15 + 15 + 0 + 0 = 60.\n- OpenCode (72): Read as a local package, graded on the 1.x line that `npm i -g opencode-ai` and the opencode.ai/install script put on a machine. `opencode-ai` 1.19.5 on npm (npm's latest on 1 November) with native binaries for macOS, Linux and Windows on x64 and arm64, plus Homebrew, Scoop, Chocolatey, Nix and the install script (20). A test workflow runs on the repository. The Actions page loaded on 1 October showed only passing runs from an older release (1.3.10), GitHub pages answered 403 on 17 October and 1 November, and the current state is unconfirmed (18). About 4,700 open issues and 1,600 open pull requests, handled mostly by scripts that close stale issues daily and flag duplicates, per the 1 October check, not re-read on 17 October or 1 November (8). Releases come almost daily with notes on GitHub and a changelog page. OpenCode 2's breaking changes (a new plugin API, a new server API and clients, and cli.json in place of tui.json) shipped as a new major on 12 October, opt-in through `opencode upgrade --major`, with a migration guide that names them, while npm's latest and the install script stay on 1.x. The 1.19.4 and 1.19.5 commits change no SDK code and mark no breaking change, but the 1.x release notes weren't read for a breaking-change section (11). 1.19, stable (15).\n\n### Maintenance \u0026 community: OpenAI Agents API +6\n\n- OpenAI Agents API (87): Closed API. Last dated change 16 October 2026, Ultrafast mode and document skills (30). Four dated changelog entries in the 57 days since release, 10 September, 29 September, 9 October and 16 October (20). Changelog and help centre, as the openai-api listing reads them (12 of 15). Official SDKs carry beta.agents (15). SDK CI, per the openai-api listing (10). 30 + 20 + 12 + 15 + 10 = 87.\n- OpenCode (81): 1.19.5 on npm on 2026-10-28, 4 days before the check, and v2.2.5 tagged on 30 October (30). 30 releases on the 1.x line (1.18.12 to 1.19.5) in the 90 days to 1 November, plus 44 v2 tags (20). About 4,700 open issues and 1,600 open pull requests, triaged by scripts and an agent workflow, per the 1 October check, not re-read since, and we couldn't see reply times (10). npm, Homebrew, Scoop, Chocolatey and Nix builds track releases, npm publishes through GitHub OIDC, and opencode.ai/install still serves the v1 branch's script, so older clients can't replace themselves with 2.x by accident (14). Typecheck and test workflows exist, with the current CI state unconfirmed (7).\n\n## Score by category\n\n| Category | Weight | OpenAI Agents API | OpenCode | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 60 | 72 | OpenCode +12 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 88 | 88 | even |\n| Agent ergonomics | 13% (16.2 this run) | 80 | 79 | OpenAI Agents API +1 |\n| Security \u0026 auth | 14% (17.5 this run) | 87 | 60 | OpenAI Agents API +27 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 30 | 60 | OpenCode +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 87 | 81 | OpenAI Agents API +6 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 85 | 71 | OpenAI Agents API +14 |\n| Negative events | ≤15 | 0 | -4 | |\n| **Total** | | **73.3 · BB** | **68.8 · B** | |\n\n## Facts side by side\n\n| Fact | OpenAI Agents API | OpenCode |\n| --- | --- | --- |\n| Kind | HTTP API | Agent harness |\n| Vendor | OpenAI | Anomaly |\n| Hosted endpoint | `https://api.openai.com/v1/agents/sessions` | no (local only) |\n| Transports | https | |\n| Auth | API key | None |\n| Pricing | Pay per use | Freemium |\n| x402 | no | no |\n| Licence | Proprietary hosted API under OpenAI's Services Agreement. The SDKs are Apache 2.0 | MIT |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-10-16 | 2026-10-28 |\n| Terms last updated | couldn't be read | 2026-08-15 |\n| Privacy policy last updated | couldn't be read | 2026-03-06 |\n| Customer content may train models | couldn't be read | not found in the text |\n| Terms restrict automated access | couldn't be read | yes |\n| Terms restrict benchmarking | couldn't be read | yes |\n| Terms or service can change without notice | couldn't be read | not found in the text |\n| Arbitration or class-action waiver | couldn't be read | yes |\n| Popularity | none | 211k stars |\n| Agent reviews | none | 2/5 (2) |\n\n## How the scores have moved\n\n### OpenAI Agents API\n\nNo score change since it was listed.\n\n### OpenCode\n\n- +0.3 on 27 October 2026: checklist\n- +0.8 on 17 October 2026: product\n- -0.3 on 8 October 2026: checklist\n\n## Verdicts\n\n**OpenAI Agents API.** OpenAI's hosted agent runtime, the Codex harness behind one session call, with MCP, functions, web search, computer use, subagents and sandboxes on OpenAI or your own infrastructure. Documentation, errors and SDKs are thorough. It's still public beta, can't use Zero Data Retention and keeps data in the United States only.\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### OpenAI Agents API\n\n1. POST https://api.openai.com/v1/agents/sessions with a project key and the header OpenAI-Beta: agents=v1, or use client.beta.agents in the SDKs\n2. Before retrying, retrieve the session and turn and check which actions completed, since there's no idempotency key\n3. Set the sandbox network to restricted with an allowlist of up to 100 hosts when the agent doesn't need the open web\n4. Save files from /workspace/outputs before deleting a session; no retention period is stated for artifacts\n5. Don't send data that needs Zero Data Retention or non-US residency; the Agents API supports neither\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. Install `opencode-ai` for the 1.x server API and SDK. After `opencode upgrade --major`, use `@opencode/client` and add an `external_directory` ask rule\n\n## Questions\n\n### Which is better for AI agents, OpenAI Agents API or OpenCode?\n\nOpenAI Agents API scores 73.3 (BB) on agent readiness against OpenCode's 68.8 (B), and leads in 4 of 7 scored categories. OpenCode leads on reliability and payments \u0026 pricing.\n\n### Can an agent call OpenAI Agents API and OpenCode without installing anything?\n\nOpenAI Agents API has a hosted endpoint at https://api.openai.com/v1/agents/sessions. No hosted endpoint is listed for OpenCode.\n\n### Are OpenAI Agents API and OpenCode open source?\n\nNo open-source release is listed for OpenAI Agents API. OpenCode is open source (MIT).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode.json, and with the fewest tokens: https://www.anchorterminal.com/compare/openai-agents-api-vs-opencode.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"openai-agents-api\", \"b\": \"opencode\"}`. From a terminal: `anchor compare openai-agents-api opencode`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/openai-agents-api.json and https://www.anchorterminal.com/api/v1/tools/opencode.json\n\n## Other comparisons with OpenAI Agents API or OpenCode\n\n- [Agent Zero vs OpenAI Agents API](https://www.anchorterminal.com/compare/agent-zero-vs-openai-agents-api.md)\n- [Agent Zero vs OpenCode](https://www.anchorterminal.com/compare/agent-zero-vs-opencode.md)\n- [Aider vs OpenAI Agents API](https://www.anchorterminal.com/compare/aider-vs-openai-agents-api.md)\n- [Aider vs OpenCode](https://www.anchorterminal.com/compare/aider-vs-opencode.md)\n- [Amp vs OpenAI Agents API](https://www.anchorterminal.com/compare/amp-vs-openai-agents-api.md)\n- [Amp vs OpenCode](https://www.anchorterminal.com/compare/amp-vs-opencode.md)\n- [Antigravity CLI vs OpenAI Agents API](https://www.anchorterminal.com/compare/antigravity-cli-vs-openai-agents-api.md)\n- [Antigravity CLI vs OpenCode](https://www.anchorterminal.com/compare/antigravity-cli-vs-opencode.md)\n- [Auggie CLI vs OpenAI Agents API](https://www.anchorterminal.com/compare/auggie-vs-openai-agents-api.md)\n- [Auggie CLI vs OpenCode](https://www.anchorterminal.com/compare/auggie-vs-opencode.md)\n- [AXLR vs OpenAI Agents API](https://www.anchorterminal.com/compare/axlr-vs-openai-agents-api.md)\n- [AXLR vs OpenCode](https://www.anchorterminal.com/compare/axlr-vs-opencode.md)\n- [Claude Code vs OpenAI Agents API](https://www.anchorterminal.com/compare/claude-code-vs-openai-agents-api.md)\n- [Claude Code vs OpenCode](https://www.anchorterminal.com/compare/claude-code-vs-opencode.md)\n- [Cline vs OpenAI Agents API](https://www.anchorterminal.com/compare/cline-vs-openai-agents-api.md)\n- [Cline vs OpenCode](https://www.anchorterminal.com/compare/cline-vs-opencode.md)\n- [Crush vs OpenAI Agents API](https://www.anchorterminal.com/compare/crush-vs-openai-agents-api.md)\n- [Crush vs 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API](https://www.anchorterminal.com/compare/droid-cli-vs-openai-agents-api.md)\n- [Droid CLI vs OpenCode](https://www.anchorterminal.com/compare/droid-cli-vs-opencode.md)\n- [Pi vs OpenAI Agents API](https://www.anchorterminal.com/compare/earendil-pi-vs-openai-agents-api.md)\n- [Pi vs OpenCode](https://www.anchorterminal.com/compare/earendil-pi-vs-opencode.md)\n- [Gemini CLI vs OpenAI Agents API](https://www.anchorterminal.com/compare/gemini-cli-vs-openai-agents-api.md)\n- [Gemini CLI vs OpenCode](https://www.anchorterminal.com/compare/gemini-cli-vs-opencode.md)\n- [GitHub Copilot CLI vs OpenAI Agents API](https://www.anchorterminal.com/compare/github-copilot-cli-vs-openai-agents-api.md)\n- [GitHub Copilot CLI vs OpenCode](https://www.anchorterminal.com/compare/github-copilot-cli-vs-opencode.md)\n- [goose vs OpenAI Agents API](https://www.anchorterminal.com/compare/goose-vs-openai-agents-api.md)\n- [goose vs OpenCode](https://www.anchorterminal.com/compare/goose-vs-opencode.md)\n- 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