# Gemini CLI vs OpenAI Codex (slim)

> OpenAI Codex has a score of 73.4 (BB) against Gemini CLI's 72.3 (BB). Both do agent harness. The largest gap is payments & pricing, 20 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/gemini-cli-vs-openai-codex.md (~1,550 tokens) · this version ~330 tokens · JSON https://www.anchorterminal.com/compare/gemini-cli-vs-openai-codex.json · canonical https://www.anchorterminal.com/compare/gemini-cli-vs-openai-codex
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-05

OpenAI Codex has a score of 73.4 (BB) against Gemini CLI's 72.3 (BB). Both do agent harness. The largest gap is payments & pricing, 20 points.

- Gemini CLI: BB 72.3, rank #72 of 452 · https://www.anchorterminal.com/tools/gemini-cli.min.md
- OpenAI Codex: BB 73.4, rank #58 of 452 · https://www.anchorterminal.com/tools/openai-codex.min.md
- Pick Gemini CLI for reliability (+16), transparency & trust (+7). Pick OpenAI Codex for security & auth (+15), payments & pricing (+20).

| Category | Gemini CLI | OpenAI Codex |
| --- | --- | --- |
| Reliability (16%) | 71 | 55 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 93 | 90 |
| Agent ergonomics (13%) | 78 | 80 |
| Security & auth (14%) | 67 | 82 |
| Payments & pricing (10%) | 40 | 60 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 88 | 87 |
| Transparency & trust (7%) | 90 | 83 |