Gemini 2.5 Pro vs Devstral Small
Google Gemini 2.5 Pro | Mistral Devstral Small | |
|---|---|---|
| Overview | ||
| Company | Mistral | |
| Release date | Mar 25 2025 | May 21 2025 |
| Access | Proprietary | Open Weight |
| Specifications | ||
Parameters | — | 24B |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 20% | — |
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. | 59.6% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 86.4% | — |
Multimodal MMMUTests the AI on understanding images and text together across many college subjects. Higher is better. | 68% | — |
| Timeline | ||
| Release gap | Gemini 2.5 Pro shipped 57 days before Devstral Small | |
Which is better: Gemini 2.5 Pro or Devstral Small?
Gemini 2.5 Pro and Devstral Small don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Gemini 2.5 Pro shipped 57 days before Devstral Small, so benchmark comparisons should account for the intervening progress.
Gemini 2.5 Pro is proprietary, while Devstral Small is open weight.
Direct benchmark comparisons are unavailable — Gemini 2.5 Pro and Devstral Small don't publish scores on any of the same benchmarks.
Frequently asked questions
Gemini 2.5 Pro was released by Google on Mar 25 2025.
Devstral Small was released by Mistral on May 21 2025.
Gemini 2.5 Pro is a proprietary model released by Google. Devstral Small is an open weight model released by Mistral.
Other comparisons
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