Mistral Small 4

Language Mistral AI Partly verified Released Mar 16, 2026

In Input modalities: TextImage Out Output modalities: Text
Reasoning· none, high
Reasoning can be off
Tool use
Structured output
Open weights

Prices

1 offering · prices as listed

Mistral AI API Global · USD mistral-small-2603

Conditions	Input/ 1M tokens	Cache read/ 1M tokens	Output/ 1M tokens	Audio/ 60 seconds
Standard	$0.15	$0.015	$0.60	—
Voice agent	—	—	—	$0.040

Prices from Mistral pricing (opens in a new tab) (checked Nov 4, 2026)

Standard: the price a request with no conditions pays (the headline price elsewhere on the site).

Details

Knowledge cutoff: Jun 2025
Licence: Apache 2.0
Family: mistral-small
Aliases: mistral-small-2603
Model ID

Not stated on Mistral AI’s pages: max input, max thinking budget, built-in tools.

Cited scores

From third-party leaderboards, not measured by us

This model isn’t on any leaderboard we cite yet.

Provider-reported scores

Published by Mistral AI, under the conditions it states

Benchmark	Setting	Score
GPQA Diamond	reasoning	71.2%
	instruct (no reasoning)	59.1%
MMLU-Pro	reasoning	78%
	instruct (no reasoning)	73.5%
IFBench	reasoning	48%
	instruct (no reasoning)	35.7%
MMMU-Pro	reasoning	60%
	instruct (no reasoning)	46.3%
AIME 2025	reasoning_effort=high	83.8%
	instruct (no reasoning)	36%
LiveCodeBench	reasoning_effort=high	63.6%
	instruct (no reasoning)	32%

Changes

All changes →

Nov 4, 2026 1 new price on Mistral AI API Audio (Voice agent) $0.040
Sep 27, 2026 1 new price on Mistral AI API Cache read $0.015

Sources

mistralai/Mistral-Small-4-119B-2603 model card (Hugging Face) (opens in a new tab) huggingface.co · checked Sep 26, 2026
Mistral pricing (opens in a new tab) docs.mistral.ai · checked Nov 4, 2026
Mistral docs: mistral-small-4-0-26-03 (opens in a new tab) docs.mistral.ai · checked Nov 3, 2026
Mistral Small 4 model card (mistralai on Hugging Face) (opens in a new tab) huggingface.co · checked Nov 8, 2026
models.dev: mistral-small-2603 (community data, MIT) (opens in a new tab) github.com · checked Sep 30, 2026
Introducing Mistral Small 4 | Mistral AI (opens in a new tab) mistral.ai · checked Nov 4, 2026

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Some values on this page are still waiting to be checked against official pages: a filled dot is verified, a hollow one is not yet (with or without a source on file). How we verify data

Mistral AI · France · mistral.ai

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