Mistral Medium 3.1
Mistral Medium 3.1 (Mistral AI) was released on Aug 12, 2025. In the Epoch AI capability ranking (ECI), it ranks #142 out of 267 models, with 135.67.
What to compare Mistral Medium 3.1 with
The models from other labs closest in capability and released in the same period, at most two per lab. Click any of them to see its page.
| Model | Lab | ECI | ELO | LiveBench | Release |
|---|---|---|---|---|---|
| Qwen3-8B | Alibaba | 136.17 | n/a | n/a | Apr 28, 2025 |
| DeepSeek-V3 (Mar 2025) | DeepSeek | 135.93 | 1,346 | n/a | Mar 24, 2025 |
| Mistral Medium 3.1 | Mistral AI | 135.67 | n/a | n/a | Aug 12, 2025 |
| DeepSeek-R1-Distill-Qwen-14B | DeepSeek | 135.44 | n/a | n/a | Jan 20, 2025 |
| Gemini 2.0 Flash Thinking Exp | Google DeepMind | 135.39 | n/a | n/a | Jan 21, 2025 |
| Gemini 2.0 Flash Thinking (Jan 2025) | Google DeepMind | 135.36 | n/a | n/a | Jan 21, 2025 |
| GPT-4.1 mini | OpenAI | 135.00 | n/a | n/a | Apr 14, 2025 |
Other models from Mistral AI
The models from the same lab closest in time, newest first.
| Model | Release | ECI | ELO | LiveBench | Access |
|---|---|---|---|---|---|
| Mistral Medium 3.5 | Apr 28, 2026 | 141.47 | 1,461 | n/a | Open weights (restricted use) |
| Magistral Small 1.2 | Sep 18, 2025 | 131.43 | n/a | n/a | Open weights (unrestricted) |
| Mistral Medium 3.1 | Aug 12, 2025 | 135.67 | n/a | n/a | API access |
| Mistral Small 3.2 | Jun 20, 2025 | 131.75 | n/a | n/a | Open weights (unrestricted) |
| Magistral Small 1.0 | Jun 10, 2025 | 133.20 | n/a | n/a | Open weights (unrestricted) |
| Mistral Medium 3 | May 7, 2025 | 134.06 | n/a | n/a | API access |
| Mistral Small 3.1 | Mar 17, 2025 | 127.49 | n/a | n/a | Open weights (unrestricted) |
| Mistral Small 3 | Jan 30, 2025 | 127.08 | n/a | n/a | Open weights (unrestricted) |
| Mistral Large 2 (Nov 2024) | Nov 18, 2024 | 128.53 | n/a | n/a | Open weights (non-commercial) |
Have you used Mistral Medium 3.1? Rate it
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What people ask about Mistral Medium 3.1
Where does Mistral Medium 3.1 rank among AI models?
In the ROO3 AI Benchmark, ordered by the Epoch AI ECI, Mistral Medium 3.1 ranks #142 out of 267 models, with an ECI of 135.67. The ECI is a composite index that combines several hard benchmarks into a single scale. The position changes when a new model comes out, and the page is refreshed six times a day.
Where do the numbers on this page come from?
From the same three sources as the ranking, all openly licensed: Epoch AI (ECI and individual tests, CC BY 4.0), Arena (human-preference ELO, CC BY 4.0) and LiveBench (overall average, CC BY-SA 4.0). ROO3 does not measure any model. When the page shows a figure published by the maker itself, it appears in the written analysis, labeled as the maker's, and never enters the ranking.
Where each number comes from
Epoch AI, "AI Benchmarking Hub". Published at epoch.ai. Data under the CC BY 4.0 licence, reordered by roo3.co.
The Arena (LMArena) leaderboard, from the public lmarena-ai/leaderboard-dataset on Hugging Face, under the CC BY 4.0 licence. We are not affiliated with the Arena.
LiveBench, by the LiveBench team, published at livebench.ai under the CC BY-SA 4.0 license. The overall average is recomputed by roo3.co with the same formula as the website (average of the categories), and those numbers stay under CC BY-SA 4.0. We are not affiliated with LiveBench.
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