Mistral Large 4
Mistral · released Oct 6, 2026
| size | 1.05 T total, 52 B active |
| context window | 1,000,000 tokens |
| longest response | not stated by the maker |
| open weights | no |
| API price | $1.36 per million input tokens, $4.18 per million output tokens |
| input and output | text and images in, text out |
Manufacturer data (announcement, model card) and OpenRouter, verified Oct 14, 2026.
Where we tested it
From the bottom up
TaskThe model had to answer 28 short questions on logic, space, theory of mind, calibration, and planning a text, each three times.
23 of 28 questions correct in all 3 attempts. On the Monty Hall question where the host does not know, not once: twice it calculated 1/2 but advised switching, once it advised staying, saying switching wins with 1/3.
You'll find the size band and figures for other models on the Tested models page.