Mistral Medium 3.5vsGrok 4.1
Mistral Medium 3.5 | Grok 4.1 | |
|---|---|---|
| Specifications | ||
Parameters | 128B | — |
Context window | 256k | — |
| 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% | — |
Community preference Arena Elo (Text)Real people chat with two anonymous AIs side by side and vote for the answer they prefer. Votes become a chess-style Elo rating on arena.ai — it measures which AI people actually like, not test scores. Higher is better. | — | 1466 |
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. | 1267Best | 1209 |
| Overview | ||
| Company | Mistral | SpaceXAI |
| Release date | Apr 29 2026 | Nov 17 2025 |
| Access | Open Weight | Proprietary |
Which is better: Mistral Medium 3.5 or Grok 4.1?
Mistral Medium 3.5 leads Grok 4.1 on 1 of the 1 benchmark they both report (Arena Elo (Code)). Grok 4.1 shipped 163 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Mistral Medium 3.5 is open weight, while Grok 4.1 is proprietary.
On Arena Elo (Code), Mistral Medium 3.5 leads at 1267 vs Grok 4.1 at 1209.
Frequently asked questions
Mistral Medium 3.5 was released by Mistral on Apr 29 2026.
Grok 4.1 was released by SpaceXAI on Nov 17 2025.
Mistral Medium 3.5 is an open weight model released by Mistral. Grok 4.1 is a proprietary model released by SpaceXAI.
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