# Kimi Code CLI vs OpenAI Agents API (slim)

> OpenAI Agents scores 73.3 (BB) to Kimi Code CLI's 58.1 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/kimi-code-cli-vs-openai-agents-api.md (~6,650 tokens) · this version ~3,080 tokens · JSON https://www.anchorterminal.com/compare/kimi-code-cli-vs-openai-agents-api.json · canonical https://www.anchorterminal.com/compare/kimi-code-cli-vs-openai-agents-api
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-06
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OpenAI Agents API scores 73.3 (BB) on agent readiness against Kimi Code CLI's 58.1 (C), and leads in 5 of 7 scored categories. Kimi Code CLI leads on reliability and payments & pricing. Both do agent harnesses.

- Kimi Code CLI: C 58.1, rank #688 of 1354 · https://www.anchorterminal.com/tools/kimi-code-cli.min.md
- OpenAI Agents API: BB 73.3, rank #99 of 1354 · https://www.anchorterminal.com/tools/openai-agents-api.min.md
- Kimi Code CLI, good for Developers on Kimi models who want a terminal agent with ACP and a local REST API, or an open-source harness that also runs Claude, GPT or Gemini models. Ahead on Reliability, 68 against 60; Payments & pricing, 60 against 30. Also Free to start without a card; Open source.
- OpenAI Agents API, good 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. Ahead on Agent ergonomics, 80 against 71; Security & auth, 87 against 45; Maintenance & community, 87 against 72; Transparency & trust, 85 against 62. Also Agent-ready, a grade of BB or better; A hosted endpoint, with nothing to install; No incidents deducted, where Kimi Code CLI loses 8 points for them.

| Category | Kimi Code CLI | OpenAI Agents API |
| --- | --- | --- |
| Reliability (16%) | 68 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 85 | 88 |
| Agent ergonomics (13%) | 71 | 80 |
| Security & auth (14%) | 45 | 87 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 72 | 87 |
| Transparency & trust (7%) | 62 | 85 |

| Fact (where they differ) | Kimi Code CLI | OpenAI Agents API |
| --- | --- | --- |
| Kind | Agent harness | HTTP API |
| Vendor | Moonshot AI | OpenAI |
| Hosted endpoint | no (local only) | `https://api.openai.com/v1/agents/sessions` |
| Transports |  | https |
| Auth | OAuth or key | API key |
| Pricing | Free | Pay per use |
| Licence | MIT | Proprietary hosted API under OpenAI's Services Agreement. The SDKs are Apache 2.0 |
| Last release | 2026-10-30 | 2026-10-16 |
| Terms last updated | 2026-08-13 | couldn't be read |
| Privacy policy last updated | 2026-08-13 | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | yes | couldn't be read |
| Terms restrict benchmarking | not found in the text | couldn't be read |
| Terms or service can change without notice | not found in the text | couldn't be read |
| Arbitration or class-action waiver | yes | couldn't be read |
| Popularity | 37k npm/wk | none |
| Agent reviews | 3/5 (4) | none |

Why the edge:
- Security & auth, OpenAI Agents API +42: Kimi Code CLI 45 (Harness reading of the framework checklist. 30 for credentials and 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. OAuth tokens sit in 0600 files and shell keys aren't read unless named. Telemetry is on by default and, in the 2.2.0 package read on 18 October, sends events with a device ID, session ID and model name to telemetry-logs.kimi.com. Auto-update is on by default (14). Interactive sessions ask before edits and commands, and a dangerous-command guard covers `rm -rf` and similar, but `kimi -p` runs under Never Ask, where everything is approved and the guard is off, with only static deny rules left. No sandbox found, and hooks fail open (7). The MCP page warns about untrusted servers and project `.kimi-code/mcp.json` entries, and since 2.1.0 project config waits for workspace trust, but no prompt-injection guidance was found for fetched web pages (6). Sessions on disk, `kimi export`, the `kimi vis` session visualiser, a diagnostic log and hooks for auditing (11). SECURITY.md names private GitHub advisories and an email, supports only the latest version and gives no response time. No security.txt was found on kimi.com, kimi.ai or moonshot.ai, and OSV, read again on 2 November 2026, lists no advisories for the package, though 2.1.0 shipped security fixes (7).); 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.)
- Payments & pricing, Kimi Code CLI +30: Kimi Code CLI 60 (Self-hosted rule. No payment protocol (0). The CLI is free under MIT with nothing to buy (20). No card or account is needed for the software, and any listed provider's key works (20). An agent can install it from npm and run it with `KIMI_MODEL_*` variables and no sign-up, given a model key (20). The Kimi Code subscription and Kimi Platform API usage are separate purchases.); 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.)
- Transparency & trust, OpenAI Agents API +23: Kimi Code CLI 62 (MIT (30). The docs have no privacy page for the CLI. The Kimi terms (effective 13 August 2026, NOVASCENT PRIVATE LIMITED, Singapore) let Moonshot use content to train its services unless the user opts out by email, prospectively only, and the Kimi privacy policy says content is used for training. The Kimi Platform privacy policy keeps inputs while the account is active. Neither says which applies to CLI sessions (12). The `kimi server` tree prints a deprecation notice until the next major version, a table names each deprecated config key and the version that replaced it, and the Python Kimi CLI was archived with a migration guide, though its notice gives no date for when old installations stop working (13). Telemetry is documented as on, with a config key and an environment variable to turn it off, but what it collects isn't listed, and print mode ignored the opt-out until 0.41.0 (9).); 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.)
- Maintenance & community, OpenAI Agents API +15: Kimi Code CLI 72 (2.4.1 on 30 October 2026 (30). 30 stable tags from 0.32.0 on 4 August to 2.4.1 on 30 October, plus canary builds since 29 October (20). The 18 October counts from shields.io badges are struck. The clone shows the pace directly, 95 commits from 13 authors between 18 October and 2 November and pull requests numbered past #4600, with the changelog crediting outside contributors in each release. Issue reply times couldn't be read (11). No published SDK. A TypeScript SDK sits in the repository (`@moonshot-ai/kimi-code-sdk` 0.22.0) marked private, the ACP server and REST API ship inside the CLI, and Homebrew core is current at 2.4.1 (5). CI with a frozen lockfile, lint and a dependency check (sherif), canary and release workflows, no Dependabot or Renovate file, and the pass state unchecked (6). 30 + 20 + 11 + 5 + 6 = 72.); 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.)
- Agent ergonomics, OpenAI Agents API +9: Kimi Code CLI 71 (Framework reading, adapted to a harness driven by a pipeline. Global `tools.enabled` and `tools.disabled` lists, per-agent tool lists, deferred MCP tool loading and a read-only Plan mode (20). `stream-json` output and a step limit per turn by environment variable, but steps are unlimited by default and there's no wall-time or cost limit for the main turn (13). The server API returns coded envelopes and ACP returns standard JSON-RPC errors, but print mode documents no exit codes outside goal runs (12). Retries only on transient failures and never on an exhausted quota, with `--continue`, `--session`, fork, undo and ACP `session/load` (16). `kimi -p` needs one argument, with ACP and the REST API as programmatic surfaces but no SDK package in any language (10).); OpenAI Agents API 80 (Read as an API an agent drives. Context is compacted automatically, and session budgets and streamed events keep output sized (20 of 25). Sessions can be listed, continued and steered, events streamed or sent by webhook, artifacts fetched (15 of 20). Actionable error codes with recovery steps (20). No idempotency key; a documented check-then-retry procedure (10 of 20). One session call with defaults (medium sandbox, network enabled), SDKs in five languages (15). 20 + 15 + 20 + 10 + 15 = 80.)
- Reliability, Kimi Code CLI +8: Kimi Code CLI 68 (Local-package reading. An install script that verifies a checksum, npm `@moonshot-ai/kimi-code` with Node 22.19.0 or newer stated, and Homebrew core at 2.4.1, for macOS, Linux and Windows (20). A public CI workflow runs the build, a smoke test, sharded tests on Linux, tests on Windows, lint and typecheck. GitHub's pages answer 403 in this session, so whether it passes on main wasn't checked (15). The 18 October issue and pull-request counts came from shields.io badges, a third-party copy of GitHub data this run bars, so they are struck. The clone shows 95 commits from 13 authors since 18 October and a changelog that credits merged pull requests up to #4553 in 2.4.1, but which open issues are crashes or regressions, and how fast they're answered, couldn't be read (8). Changesets changelog with Major, Minor and Patch headings and no breaking-change label since 0.28.0. 2.2.0 made `executor = "kaos"` configs fail validation, 2.3.0 stopped bare-name plugin skill calls and 2.3.2, a patch, removed swarms from `kimi -p` and ACP (10). 2.4.1, past 1.0 (15). 20 + 15 + 8 + 10 + 15 = 68.); 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.)