Mistral Medium 3.1 vs o3
Cost and capability comparison. For a sample workload of 1,000 input and 500 output tokens across 100,000 requests/month, Mistral Medium 3.1 is cheaper by about $460.00/month.
| Mistral Medium 3.1 | o3 | |
|---|---|---|
| Intelligence | ||
| Arena · Overall(LMArena Elo — higher is better) | 1424✓ | 1410 |
| Arena rank (overall) | #64✓ | #83 |
| Arena · Coding | 1352 | 1428✓ |
| Arena · Math & reasoning | 1345 | 1435✓ |
| Arena · Agentic / tool use | 1342 | 1410✓ |
| Score evidence | Measured | Measured |
| Pricing (USD / 1M tokens) | ||
| Input | $0.4000✓ | $2.00 |
| Output | $2.00✓ | $8.00 |
| Cached input (read) | — | $0.5000✓ |
| Cache write | — | — |
| Blended(3:1 input:output blend) | $0.8000✓ | $3.50 |
| Specs & capabilities | ||
| Provider | Mistral AI | OpenAI |
| Context window | 131K (131,000) | 200K (200,000)✓ |
| Max output | 8,192 | 100,000✓ |
| Modalities | text | text, image |
| Vision | Yes | Yes |
| Tool use | Yes | Yes |
| Reasoning | No | Yes |
| Prompt caching | No | Yes |
| Batch pricing | No | Yes |
| Tokenizer | approx | o200k_base |
| Release date | — | — |
| Status | ga | ga |
Intelligence scores are community Arena ratings from LMArena / arena.ai, used under CC BY 4.0. Snapshot last refreshed 21 October 2026. Scores are a relative signal, not an absolute measure of capability. A Measured score was voted on directly; an Estimated score is inherited from an identical base model (a regional/creator-prefixed hosting duplicate). See our methodology.
Compare on your own workload
Mistral Medium 3.1 and o3 are pre-loaded. Adjust the tokens and monthly volume to see which is cheaper for your usage.
Used unless you set active users below.
Results update automatically as you type.
| Mistral Medium 3.1 | Mistral AI | $0.00140 | $140.00 | $1,680.00 | 131,000 |
| o3 | OpenAI | $0.00600 | $600.00 | $7,200.00 | 200,000 |
FAQ
Which is cheaper, Mistral Medium 3.1 or o3?
For a workload of 1,000 input and 500 output tokens over 100,000 requests/month, Mistral Medium 3.1 is cheaper, costing about $140.00/month versus $600.00/month.
What is the context window of Mistral Medium 3.1 and o3?
Mistral Medium 3.1 supports 131,000 tokens, while o3 supports 200,000 tokens.
Estimates for planning only. Verify current pricing with each provider.