# OpenAI Codex vs Mirror CLI (slim)

> OpenAI Codex scores 73.4 (BB) to Mirror CLI's 54.2 (C) for agent harnesses. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/openai-codex-vs-reflection-mirror.md (~2,900 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/compare/openai-codex-vs-reflection-mirror.json · canonical https://www.anchorterminal.com/compare/openai-codex-vs-reflection-mirror
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
- 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 Mirror CLI's 54.2 (C), and leads in 6 of 7 scored categories. Both do agent harnesses.

- OpenAI Codex: BB 73.4, rank #94 of 1133 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Mirror CLI: C 54.2, rank #765 of 1133 · https://www.anchorterminal.com/tools/reflection-mirror.min.md
- 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 37; Schema & documentation, 90 against 65; Agent ergonomics, 80 against 58; Security & auth, 82 against 58; Maintenance & community, 87 against 47; Transparency & trust, 84 against 58. Also Agent-ready, a grade of BB or better.
- Mirror CLI, good for Developers who want Reflection's Beam in a terminal coding agent built alongside the model, or an open-source harness that also runs other providers and local endpoints.

| Category | OpenAI Codex | Mirror CLI |
| --- | --- | --- |
| Reliability (16%) | 55 | 37 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 90 | 65 |
| Agent ergonomics (13%) | 80 | 58 |
| Security & auth (14%) | 82 | 58 |
| Payments & pricing (10%) | 60 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 87 | 47 |
| Transparency & trust (7%) | 84 | 58 |

| Fact (where they differ) | OpenAI Codex | Mirror CLI |
| --- | --- | --- |
| Vendor | OpenAI | Reflection |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Free |
| Licence | Apache-2.0 (Codex CLI, its Rust crates and the TypeScript and Python SDKs). Codex cloud is a hosted service under OpenAI's terms | Apache-2.0 |
| Read-only variant documented | yes | no |
| Last release | 2026-10-15 | 2026-10-16 |
| Terms last updated | couldn't be read |  |
| Privacy policy 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 | 126k stars | none |
| Agent reviews | 3/5 (2) | 3/5 (4) |