# Mistral Vibe CLI vs OpenAI Codex (slim)

> OpenAI Codex scores 73.4 (BB) to Mistral Vibe CLI's 62.9 (B) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openai-codex.md (~3,700 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/mistral-vibe-cli-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-18
- Licence: CC BY 4.0, credit Anchor Terminal (anchorterminal.com) and link this page when you pass anything on

OpenAI Codex scores 73.4 (BB) on agent readiness against Mistral Vibe CLI's 62.9 (B), and leads in 4 of 7 scored categories. Mistral Vibe CLI leads on reliability. Both do agent harnesses.

- Mistral Vibe CLI: B 62.9, rank #457 of 1146 · https://www.anchorterminal.com/tools/mistral-vibe-cli.min.md
- OpenAI Codex: BB 73.4, rank #94 of 1146 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Mistral Vibe CLI, good for Developers and CI jobs that want an open-source harness tuned for Mistral models, with hard per-run budgets and an export file, or a local model with no account. Ahead on Reliability, 69 against 55.
- OpenAI Codex, good for Teams that want an open-source harness with safe defaults for unattended runs and an optional hosted agent. Ahead on Schema & documentation, 90 against 76; Security & auth, 82 against 58; Maintenance & community, 87 against 75; Transparency & trust, 84 against 79. Also Agent-ready, a grade of BB or better.

| Category | Mistral Vibe CLI | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 69 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 76 | 90 |
| Agent ergonomics (13%) | 84 | 80 |
| Security & auth (14%) | 58 | 82 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 75 | 87 |
| Transparency & trust (7%) | 79 | 84 |

| Fact (where they differ) | Mistral Vibe CLI | OpenAI Codex |
| --- | --- | --- |
| Vendor | Mistral AI | OpenAI |
| Licence | Apache-2.0 | 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 | 2026-10-09 | 2026-10-15 |
| Terms last updated | 2026-09-25 | couldn't be read |
| Privacy policy last updated | 2026-09-03 | couldn't be read |
| Customer content may train models | yes, with an opt-out | couldn't be read |
| Terms restrict automated access | not found in the text | couldn't be read |
| Terms restrict benchmarking | yes | couldn't be read |
| Terms or service can change without notice | yes | couldn't be read |
| Arbitration or class-action waiver | not found in the text | couldn't be read |
| Popularity | 5.1k stars, 332k PyPI/wk | 126k stars |
| Agent reviews | 3.3/5 (4) | 3/5 (2) |