GPT-5.1-Codex vs Pixtral Large
OpenAI vs Mistral AI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1-Codex has the higher intelligence index (88.2 vs 53.1)
- •GPT-5.1-Codex is cheaper ($1.25 vs $2.00 per 1M input)
- •GPT-5.1-Codex is faster
- •GPT-5.1-Codex has a larger context window (400K)
| GPT-5.1-Codex | Pixtral Large | |
|---|---|---|
| Intelligence index | 88.2 | 53.1 |
| Developer | OpenAI | Mistral AI |
| Type | Multimodal | Multimodal |
| Access | API only | API only |
| Context window | 400,000 tokens | 131,072 tokens |
| Input price | $1.25 / 1M | $2.00 / 1M |
| Output price | $10.00 / 1M | $6.00 / 1M |
| Speed | 188 tok/s | 0 tok/s |
| Released | November 13, 2025 | November 19, 2024 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
Shared benchmarks
GPT-5.1-Codex
Pixtral Large
AIME 2025
95.7
2.3
GPQA Diamond
86
50.5
Humanity’s Last Exam
23.4
3.6
LiveCodeBench
84.9
26.1
MMLU-Pro
86
70.1