Mistral Medium 3.5vso1
Mistral Medium 3.5 | o1 | |
|---|---|---|
| Specifications | ||
Parameters | 128B | — |
Context window | 256k | 200k |
| Benchmarks | ||
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 77.6% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | — | 75.7% |
Community preference (code) Arena Elo (Code)Like the text arena, but people vote on which AI writes better code. The votes become a chess-style Elo rating on arena.ai. Higher is better. | 1267 | — |
| Overview | ||
| Company | Mistral | OpenAI |
| Release date | Apr 29 2026 | Dec 5 2024 |
| Access | Open Weight | Proprietary |
Which is better: Mistral Medium 3.5 or o1?
Mistral Medium 3.5 and o1 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o1 shipped 510 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Context windows are 256k (Mistral Medium 3.5) vs 200k (o1). Mistral Medium 3.5 is open weight, while o1 is proprietary.
Direct benchmark comparisons are unavailable — Mistral Medium 3.5 and o1 don't publish scores on any of the same benchmarks.
Frequently asked questions
Mistral Medium 3.5 was released by Mistral on Apr 29 2026.
o1 was released by OpenAI on Dec 5 2024.
Mistral Medium 3.5 has a 256k context window; o1 has 200k.
Mistral Medium 3.5 is an open weight model released by Mistral. o1 is a proprietary model released by OpenAI.
Other comparisons
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