2 vs 0 benchmarks won
Anthropic Claude Opus 4.6 | Mistral Devstral 2 (123B) | |
|---|---|---|
| Overview | ||
| Company | Anthropic | Mistral |
| Release date | Feb 5 2026 | Dec 9 2025 |
| Model type | — | — |
| Open source | No | Yes |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science reasoning GPQA Diamond | 91.3% | — |
Software engineering SWE-Bench Verified | 80.8% | — |
Multimodal understanding MMMU | — | — |
| Timeline | ||
| Release gap | Devstral 2 (123B) shipped 58 days before Claude Opus 4.6 | |
Claude Opus 4.6 leads Devstral 2 (123B) on 2 of the tracked benchmarks (GPQA Diamond, SWE-Bench Verified, MMMU). Devstral 2 (123B) shipped 58 days before Claude Opus 4.6, so benchmark comparisons should account for the intervening progress.
Devstral 2 (123B) is an open-source / open-weight model; Claude Opus 4.6 is proprietary.
Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.