Mistral · Mistral Large line · flagship · open weights
Mistral Large 4 was released by Mistral on October 6, 2026, as an open-weights flagship model in the Mistral Large line.
Mistral's first large reasoning model, natively multimodal with 1 trillion parameters (49 billion active), lifts the Intelligence Index from 9 to 38 but costs almost three times as much as Mistral Large 3.
Compared with Mistral Large 3 · the model it replaces
Solves about 6 in 10 hard real-world software engineering tasks
DeepSWE 1.1 — fixing real bugs in large code projects
61.7%
✦ first score published — no Mistral Large 3 result to compare
Scores four times higher on the all-round intelligence index
Artificial Analysis Intelligence Index v4.3.2 — one score averaging 10 hard tests
38
▲ up from 9 for Mistral Large 3 · +29 points · preview with reasoning, Mistral Large 3 has no reasoning mode
Costs developers almost three times as much to run
API price per 1M tokens — input / output
$1.36 / $4.18
preview launch price — was $0.50 / $1.50 for Mistral Large 3
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Mistral Large 4 is the current model in this line. The card shows how long it has been since the last release against the line's usual gap and its recent ones — the rhythm, not a date.
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