Mistral Medium 3.5 vs o3
Mistral Medium 3.5 is cheaper on output tokens, while Mistral Medium 3.5 offers a larger context window. Choose Mistral Medium 3.5 or o3 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Mistral Medium 3.5 | o3 |
|---|---|---|
| Provider | Mistral | OpenAI |
| Input / 1M tokens | $1.50 | $2.00 |
| Output / 1M tokens | $7.50 | $8.00 |
| Context window | 262K | 200K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Apr 2025 |
| LMArena (Chatbot Arena) Elo score | 1421 | 1410 |
| LMArena WebDev Elo score | 1263 | — |
| LMArena Vision Elo score | 1223 | 1214 |
| Epoch Capabilities Index score | 141 | 147 |
| SWE-bench Verified score | — | 58.4 |
| Aider Polyglot score | — | 81.3 |
| SWE-bench Multimodal score | — | 36.0 |
| GPQA Diamond score | — | 81.8 |
| FrontierMath score | — | 18.7 |
FAQ
Is Mistral Medium 3.5 or o3 cheaper?
Mistral Medium 3.5 is cheaper on output tokens ($7.50 vs $8.00 per 1M).
Which has the larger context window, Mistral Medium 3.5 or o3?
Mistral Medium 3.5 has the larger context window (262K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.