GPT-5.1 vs Mixtral 8x7B Instruct
OpenAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has the higher intelligence index (89 vs 26.1)
- •Mixtral 8x7B Instruct is cheaper ($0.50 vs $1.25 per 1M input)
| GPT-5.1 | Mixtral 8x7B Instruct | |
|---|---|---|
| Intelligence index | 89 | 26.1 |
| 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 | $0.70 / 1M |
| Speed | 115 tok/s | — |
| Released | November 12, 2025 | December 11, 2023 |
| Parameters | — | — |
| Input modalities | Text, Image | — |
| Output modalities | Text | — |
Shared benchmarks
GPT-5.1
Mixtral 8x7B Instruct
GPQA Diamond
88.1
29.2
Humanity’s Last Exam
26.5
4.5
LiveCodeBench
86.8
6.6
MMLU-Pro
87
38.7