Specification

Version: 26.03
Source:Mistral AI docsT1observed 1 h agohigh
Release date: 16 Mar 2026
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Openness: open-weights
Source:Mistral AI docsT1observed 1 h agohigh
License: Apache 2.0
Source:Mistral AI docsT1observed 1 h agohigh
Context window: 256K tokens
Source:Mistral AI docsT1observed 1 h agohigh
Max output: 209.7K tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Modalities: image, text
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Input modalities: image, text
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Output modalities: text
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Tokenizer: Mistral
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
API alias: mistral-small-latest
Source:Mistral AI docsT1observed 1 h agohigh
Hugging Face repo: mistralai/Mistral-Small-4-119B-2603
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Official page: docs.mistral.ai/models/mistral-small-4-0-26-03
Source:Mistral AI docsT1observed 1 h agohigh
Openrouter id: mistralai/mistral-small-2603
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Supported parameters: frequency_penalty, include_reasoning, max_tokens, presence_penalty, reasoning, reasoning_effort, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_p
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

20

Source tiers

T1T29 / 11

Freshest observation

1 h ago

Conflicts

1 flagged

Relations

Available through: Mistral AI La Plateforme
Developed by: Mistral AI
Supersedes: Magistral Small 1.2, Magistral Small 1.1, Devstral Small 1.1, Magistral Small 1.0, Mistral Small 3.1, Mistral Saba, Mistral Small 3.0, Mistral Small 2.0 +5(13 total)

Identity

hf_repo: mistralai/Mistral-Small-4-119B-2603
mistral_docs_slug: mistral-small-4-0-26-03
openrouter: mistralai/mistral-small-2603

Also known as: Mistral Small 4, mistral-small-2603, Mistral: Mistral Small 4, mistralai/mistral-small-2603

slug mistral-small-4

ModelMinistral 3 3B 2512Mistral AI
ModelMistral Small 3.1 24BMistral AI
ModelMistral NemoMistral AI
ModelMinistral 3 14B 2512Mistral AI
ModelVoxtral Small 24B 2507Mistral AI
ModelMistral Small 3.2 24BMistral AI
ModelMistral Small 3Mistral AI
ModelMistral SabaMistral AI

Compare

Open compare →

Modalities

Modalities: imagetext
Input: imagetext
Output: text

Capabilities

Tool calling
Yes
Mistral AI docs · T1
Structured output
Yes
Mistral AI docs · T1
Reasoning
Yes
OpenRouter public model & pricing listing · T2
Vision
Yes
OpenRouter public model & pricing listing · T2
Audio
Unavailable
Fine-tuning available
Unavailable

Context window: 256K tokens
Source:Mistral AI docsT1observed 1 h agohigh
Max output: 209.7K tokens
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium
Tokenizer: Mistral
Source:OpenRouter public model & pricing listingT2observed 1 h agomedium

No benchmark results recorded

Results appear when a tier 1–3 source publishes them; we never copy scores without a source.

Current prices

Current prices per 1M tokens
Provider	Input / 1M	Output / 1M	Cached in	Batch in / out	Context	Observed	Source
Mistral AI La Plateformemistralai/mistral-small-2603:batch	$0.075	$0.30	$0.0075	—	262.1K	1 h ago	openrouter.aiT2
Mistral AI La Plateforme	$0.15	$0.60	—	—	—	1 h ago	docs.mistral.aiT1
Mistral AI La Plateformemistralai/mistral-small-2603	$0.15	$0.60	$0.015	—	262.1K	1 h ago	openrouter.aiT2

USD per 1M tokens as published by each provider (USD). Rows are append-only: every change is kept in the history below.

Available through 1

Mistral AI La Plateforme

Price history

Input price · USD / 1M tokens

Output price · USD / 1M tokens

Mistral AI La Plateforme

No hardware estimate available

Estimates need a parameter count; this model has none recorded from a source.

No lineage recorded

Lineage comes from explicit `derived_from`, `fine_tuned_from`, `distilled_from` and `quantized_from` relations stated by sources.

Papers 0

No papers linked yet.

Repositories 0

No repositories linked yet.

As of

Rewind the record: see this entity's attributes exactly as AI Atlas knew them on a given day.

Claim history

21 claims · 20 properties1 conflicting

Versionversion1

Claim history for Version
Value	Valid from → to	Status	Source	Confidence	Extractor
26.03	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Release daterelease_date1

Claim history for Release date
Value	Valid from → to	Status	Source	Confidence	Extractor
16 Mar 2026	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Opennessopenness1

Claim history for Openness
Value	Valid from → to	Status	Source	Confidence	Extractor
open-weights	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Licenselicense1

Claim history for License
Value	Valid from → to	Status	Source	Confidence	Extractor
Apache 2.0	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Context windowcontext_length2conflicting claims

Claim history for Context window
Value	Valid from → to	Status	Source	Confidence	Extractor
262.1K tokens	11 Sept 2026 21:10 UTC → current	conflicting	OpenRouter public model & pricing listingT2	medium	deterministic
256K tokens	11 Sept 2026 20:57 UTC → current	current	Mistral AI docsT1	conflicted	deterministic

Max outputmax_output_tokens1

Claim history for Max output
Value	Valid from → to	Status	Source	Confidence	Extractor
209.7K tokens	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Modalitiesmodalities1

Claim history for Modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Input modalitiesmodalities_input1

Claim history for Input modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
image, text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
Value	Valid from → to	Status	Source	Confidence	Extractor
text	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tokenizertokenizer1

Claim history for Tokenizer
Value	Valid from → to	Status	Source	Confidence	Extractor
Mistral	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

API aliasapi_alias1

Claim history for API alias
Value	Valid from → to	Status	Source	Confidence	Extractor
mistral-small-latest	11 Sept 2026 20:57 UTC → current	current	Mistral AI docsT1	high	deterministic

Hugging Face repohf_repo1

Claim history for Hugging Face repo
Value	Valid from → to	Status	Source	Confidence	Extractor
mistralai/Mistral-Small-4-119B-2603	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Official pageofficial_url1

Claim history for Official page
Value	Valid from → to	Status	Source	Confidence	Extractor
https://docs.mistral.ai/models/mistral-small-4-0-26-03	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Descriptiondescription1

Claim history for Description
Value	Valid from → to	Status	Source	Confidence	Extractor
Hybrid model unifying instruct, reasoning, and coding in a single efficient model.	11 Sept 2026 20:56 UTC → current	current	Mistral AI docsT1	high	deterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
Value	Valid from → to	Status	Source	Confidence	Extractor
mistralai/mistral-small-2603	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Reasoningreasoning1

Claim history for Reasoning
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Structured outputstructured_output1

Claim history for Structured output
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 20:57 UTC → current	current	Mistral AI docsT1	high	deterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
Value	Valid from → to	Status	Source	Confidence	Extractor
frequency_penalty, include_reasoning, max_tokens, presence_penalty, reasoning, reasoning_effort, response_format, seed, stop, structured_outputs, temperature, tool_choice, tools, top_k, top_p	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Tool callingtool_calling1

Claim history for Tool calling
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 20:57 UTC → current	current	Mistral AI docsT1	high	deterministic

Visionvision1

Claim history for Vision
Value	Valid from → to	Status	Source	Confidence	Extractor
Yes	11 Sept 2026 21:10 UTC → current	current	OpenRouter public model & pricing listingT2	medium	deterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

11 Sept 2026
Listed by providerModelMistral Small 4Mistral AI
Mistral AI La Plateforme lists Mistral Small 4 at $0.075 in / $0.3 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelMistral Small 4Mistral AI
Mistral AI La Plateforme lists Mistral Small 4 at $0.15 in / $0.6 out per 1M tokens
openrouter
openrouter.ai
11 Sept 2026
Listed by providerModelMistral Small 4Mistral AI
Mistral AI La Plateforme lists Mistral Small 4 at $0.15 in / $0.6 out per 1M tokens
mistral
docs.mistral.ai
11 Sept 2026
New modelModelMistral Small 4Mistral AI
New model: Mistral Small 4 (Mistral AI)
mistral
docs.mistral.ai

Full timeline →

Source documents
Source	Document	Type	Tier	Last observed	Snapshots
Mistral AI docs	docs.mistral.ai/models	model_docs	T1· Official	1 h ago	1
Mistral AI docs	docs.mistral.ai/models/mistral-small-4-0-26-03	model_page	T1· Official	1 h ago	1
OpenRouter public model & pricing listing	openrouter.ai/api/v1/models	catalogue	T2· Quality secondary	1 h ago	1

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.