# Codex CLI vs GitHub Copilot (2026): Benchmarks, Price & Verdict | Alher Tech

> Codex CLI vs GitHub Copilot: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

- Canonical page: https://alhertech.com/en/ai-comparison/codex-cli-vs-github-copilot/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

---

|  | Codex CLI | GitHub Copilot |
| --- | --- | --- |
| arenaElo | 1408 | 1351 |
| humanEval | 95.5 | 89.9 |
| sweBench | 70 | 55 |
| mmlu | 88.6 | 86.7 |
| gpqa | 60.8 | 55.1 |
| aime | 86 | 80 |
| Price in/out ($/M) | $9 / $36 | $0 / $0 |

## Our verdict

Copilot is the low-friction default for IDE users; Codex CLI is the high-ceiling choice for terminal agents. Copilot bills flat; Codex bills per token. Use Copilot for inline suggestions across a team, Codex CLI for autonomous PR generation.

[Codex CLI](https://alhertech.com/en/ai-comparison/codex-cli/) · [GitHub Copilot](https://alhertech.com/en/ai-comparison/github-copilot/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)