GPT-5.1 vs Mistral Medium
OpenAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 33.6)
- •GPT-5.1 is cheaper ($1.25 vs $2.80 per 1M input)
- •GPT-5.1 is faster
| GPT-5.1 | Mistral Medium | |
|---|---|---|
| Intelligence index | 89 | 33.6 |
| Developer | OpenAI | Mistral AI |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 400,000 tokens | — |
| Input price | $1.25 / 1M | $2.80 / 1M |
| Output price | $10.00 / 1M | $8.10 / 1M |
| Speed | 115 tok/s | 45 tok/s |
| Released | November 12, 2025 | December 11, 2023 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5.1
Mistral Medium
GPQA Diamond
88.1
34.9
Humanity’s Last Exam
26.5
3.4
LiveCodeBench
86.8
9.9
MMLU-Pro
87
49.1