GPT-5.1 vs Mistral Small
OpenAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 40.3)
- •Mistral Small is cheaper ($0.20 vs $1.25 per 1M input)
- •Mistral Small is faster
| GPT-5.1 | Mistral Small | |
|---|---|---|
| Intelligence index | 89 | 40.3 |
| Developer | OpenAI | Mistral AI |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 400,000 tokens | — |
| Input price | $1.25 / 1M | $0.20 / 1M |
| Output price | $10.00 / 1M | $0.60 / 1M |
| Speed | 115 tok/s | 134 tok/s |
| Released | November 12, 2025 | February 26, 2024 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5.1
Mistral Small
GPQA Diamond
88.1
38.1
Humanity’s Last Exam
26.5
4.4
LiveCodeBench
86.8
14.1
MMLU-Pro
87
52.9