Mistral Medium 3.5 vs Grok 2.5
Mistral Mistral Medium 3.5 | SpaceXAI Grok 2.5 | |
|---|---|---|
| Overview | ||
| Company | Mistral | SpaceXAI |
| Release date | Apr 29 2026 | Aug 2025 |
| Access | Open Weight | Proprietary |
| 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% | — |
| Timeline | ||
| Release gap | Grok 2.5 shipped 271 days before Mistral Medium 3.5 | |
Which is better: Mistral Medium 3.5 or Grok 2.5?
Mistral Medium 3.5 and Grok 2.5 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 2.5 shipped 271 days before Mistral Medium 3.5, so benchmark comparisons should account for the intervening progress.
Mistral Medium 3.5 is open weight, while Grok 2.5 is proprietary.
Direct benchmark comparisons are unavailable — Mistral Medium 3.5 and Grok 2.5 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.
Grok 2.5 was released by SpaceXAI on Aug 2025.
Mistral Medium 3.5 is an open weight model released by Mistral. Grok 2.5 is a proprietary model released by SpaceXAI.
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