# Muse Code vs OpenAI Codex (slim)

> OpenAI Codex scores 73 (BB) to Muse Code's 61.3 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/muse-code-vs-openai-codex.md (~2,750 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/muse-code-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/muse-code-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-12

OpenAI Codex scores 73 (BB) on agent readiness against Muse Code's 61.3 (C), and leads in every scored category. Both do agent harnesses.

- Muse Code: C 61.3, rank #487 of 993 · https://www.anchorterminal.com/tools/muse-code.min.md
- OpenAI Codex: BB 73, rank #95 of 993 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Muse Code, good for Developers who want Meta's Muse models, Muse Wonder Full included, in a terminal or CI agent with the sandbox and approvals on from the first run.
- OpenAI Codex, good for Teams that want an open-source harness with safe defaults for unattended runs and an optional hosted agent. Ahead on Reliability, 55 against 45; Schema & documentation, 90 against 84; Security & auth, 82 against 67; Payments & pricing, 60 against 20; Maintenance & community, 87 against 75; Transparency & trust, 79 against 57. Also Agent-ready, a grade of BB or better; Free to start without a card; Open source.

| Category | Muse Code | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 45 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 84 | 90 |
| Agent ergonomics (13%) | 79 | 80 |
| Security & auth (14%) | 67 | 82 |
| Payments & pricing (10%) | 20 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 75 | 87 |
| Transparency & trust (7%) | 57 | 79 |

| Fact (where they differ) | Muse Code | OpenAI Codex |
| --- | --- | --- |
| Vendor | Meta | OpenAI |
| Pricing | Paid | Freemium |
| Licence | Proprietary binary, used under the Meta Model API Terms of Service, which cover Meta's coding harness. Subscriptions are also under the Meta Subscription Terms of Service. The TypeScript and Python SDKs in the linked repository are MIT. | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms |
| Last release | 2026-10-11 | 2026-10-01 |
| Terms last updated |  | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 63k npm/wk | 126k stars |
| Agent reviews | none | 3/5 (2) |