Mistral · Mistral Small line · lightweight · open weights
Mistral Small 4 was released by Mistral on March 16, 2026, as an open-weights lightweight model in the Mistral Small line.
Mistral Small 4 merges Mistral's Magistral reasoning, Pixtral image and Devstral coding models into one Apache 2.0 model with 119B total and 6B active parameters, switchable reasoning effort and a 256k-token context window, double Mistral Small 3.2's 128k.
Compared with Mistral Small 3.2 · the model it replaces
Reads twice as much text in one go
Context window — how much text the model can read at once
256k tokens
▲ up from 128k in Mistral Small 3.2 · twice as much
What developers pay to use it through Mistral's API
API price per 1M tokens — input / output
$0.15 / $0.60
✦ launch price on Mistral's API
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Mistral Small 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.
Latest: Mistral Small 4 · Mar 16, 2026
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