GPT-5.1 vs Magistral Small 1.2
OpenAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 73.9)
- •Magistral Small 1.2 is cheaper ($0.50 vs $1.25 per 1M input)
- •GPT-5.1 is faster
| GPT-5.1 | Magistral Small 1.2 | |
|---|---|---|
| Intelligence index | 89 | 73.9 |
| Developer | OpenAI | Mistral AI |
| Type | LLM | LLM |
| Access | API only | — |
| Context window | 400,000 tokens | — |
| Input price | $1.25 / 1M | $0.50 / 1M |
| Output price | $10.00 / 1M | $1.50 / 1M |
| Speed | 115 tok/s | 106 tok/s |
| Released | November 12, 2025 | September 17, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5.1
Magistral Small 1.2
AIME 2025
94
80.3
GPQA Diamond
88.1
66.3
Humanity’s Last Exam
26.5
6.1
LiveCodeBench
86.8
72.3
MMLU-Pro
87
76.8