GPT-5.1 Codex Max is the newer model, released after GPT-5.1-Codex-Mini.
| Spec | GPT-5.1 Codex Max | GPT-5.1-Codex-Mini |
|---|---|---|
| Input price | — | $1.5/M tokens |
| Output price | — | $6/M tokens |
| Context window | — | 400K tokens |
| Released | Dec 2025 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.1-Codex-Mini uses 1.8x more transitions
GPT-5.1 Codex Max is the newer model, released after GPT-5.1-Codex-Mini.
| Spec | GPT-5.1 Codex Max | GPT-5.1-Codex-Mini |
|---|---|---|
| Input price | — | $1.5/M tokens |
| Output price | — | $6/M tokens |
| Context window | — | 400K tokens |
| Released | Dec 2025 | Nov 2025 |
Not enough votes to call it. On the specs, nothing separates them.
GPT-5.1-Codex-Mini uses 1.8x more transitions