GPT-5.1 Codex Max is the newer model, released after Mistral Devstral Medium.
| Spec | Mistral Devstral Medium | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $0.4/M tokens | — |
| Output price | $2/M tokens | — |
| Released | Jul 2025 | Dec 2025 |
| SWE-bench Verified | 61.6% | 77.9% |
Not enough votes to call it. On the specs, GPT-5.1 Codex Max has the edge: bigger model tier, newer, major provider backing.
Mistral Devstral Medium uses 12.4x more transitions
GPT-5.1 Codex Max is the newer model, released after Mistral Devstral Medium.
| Spec | Mistral Devstral Medium | GPT-5.1 Codex Max |
|---|---|---|
| Input price | $0.4/M tokens | — |
| Output price | $2/M tokens | — |
| Released | Jul 2025 | Dec 2025 |
| SWE-bench Verified | 61.6% | 77.9% |
Not enough votes to call it. On the specs, GPT-5.1 Codex Max has the edge: bigger model tier, newer, major provider backing.
Mistral Devstral Medium uses 12.4x more transitions