Mistral Small 4

Mistral Small 4 is the next major release in the Mistral Small family, unifying the capabilities of several flagship Mistral models into a single system. It combines strong reasoning from Magistral, multimodal understanding from Pixtral, and agentic coding capabilities from Devstral, enabling one model to handle complex analysis, software development, and visual tasks within the same workflow.

mistral/mistral-small-2603

Organization: Mistral
Family: mistral-small
Providers: 18
Context: 256,000
Output limit: 256,000
Knowledge: 2025-06
Release: 2026-03-16
Updated: —
Weights: Open
Input: text, image/png, image/jpeg, image/webp, image/gif
Output: text
Capabilities: —

Providers

Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.

23 offers · USD per million tokens

Provider	Model ID	Context	Output	Input / output · 1M	Reasoning	Tools	Structured	Details
AI/ML API	mistralai/mistral-small-2603	262,144	256,000	— / —	—	—	—	View
AKI.IO	mistral4-119b	262,144	81,920	— / —	—	—	—	View
Cortecs	mistral-small-2603	262,144	256,000	— / —	—	—	—	View
DevPass (LLM Gateway)	mistral-small-2603	262,144	256,000	— / —	—	—	—	View
Eden AI	mistral/mistral-small-2603	262,144	256,000	— / —	—	—	—	View
EmpirioLabs AI	mistral-small-4	256,000	65,536	— / —	—	—	—	View
Infomaniak	mistralai/Mistral-Small-4-119B-2603	256,000	256,000	— / —	—	—	—	View
Kilo Gateway	mistralai/mistral-small-2603	262,144	209,715	— / —	—	—	—	View
LLM Gateway	mistral/mistral-small-2603	262,144	256,000	— / —	—	—	—	View
LowRouter	auto/mistralai/mistral-small-2603	256,000	256,000	— / —	—	—	—	View
NanoGPT	mistralai/mistral-small-4-119b-2603:thinking	262,144	16,384	— / —	—	—	—	View
NanoGPT	mistralai/mistral-small-4-119b-2603	262,144	16,384	— / —	—	—	—	View
Mistralvia OpenRouter	mistralai/mistral-small-2603 unknown	262,144	209,715	$0.15 / $0.60	Yes	Yes	Yes	View
Mistralvia OpenRouter	mistralai/mistral-small-2603 unknown	262,144	209,715	$0.165 / $0.66	Yes	Yes	Yes	View
Mistralvia OpenRouter	mistralai/mistral-small-2603 unknown	262,144	209,715	$0.165 / $0.66	Yes	Yes	Yes	View
Mistralvia OpenRouter	mistralai/mistral-small-2603 unknown	262,144	209,715	$0.15 / $0.60	Yes	Yes	Yes	View
Opper	mistral-small-2603	256,000	8,192	— / —	—	—	—	View
Prime Inference	mistralai/mistral-small-2603	262,144	209,715	— / —	—	—	—	View
Regolo AI	mistral-small-4-119b	256,000	16,384	— / —	—	—	—	View
Requesty	mistral-small-2603	256,000	256,000	— / —	—	—	—	View
Requesty	mistral-small-2603@eu	256,000	256,000	— / —	—	—	—	View
SAP AI Core	mistralai--mistral-small	128,000	128,000	— / —	—	—	—	View
Tempr Gateway	mistral/mistral-small-2603	256,000	256,000	— / —	—	—	—	View

Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.

Pricing

Compare token rates and cache charges across available routes and hosting configurations.

USD per million tokens

Input from$0.15Per 1M input tokens

Output from$0.60Per 1M output tokens

Available offers23Across 18 providers

Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.

Endpoint price comparisonLatest observed snapshot · 4 lowest-priced configurations

InputOutput

Mistralmistral/zdr

$0.15$0.60

Mistralmistral

$0.15$0.60

Mistralmistral/us

$0.165$0.66

Mistralmistral/eu

$0.165$0.66

mistralai/mistral-small-2603Observed Oct 10, 2026, 11:31 AM UTC

Input: $0.15
Output: $0.60
Cache read: $0.015

Hosting prices through OpenRouter All endpoints and cache rates

Endpoint	Input / 1M	Output / 1M	Cache read / 1M	Cache write / 1M
Mistralmistral/zdr	$0.15	$0.60	$0.015	—
Mistralmistral/us	$0.165	$0.66	$0.0165	—
Mistralmistral/eu	$0.165	$0.66	$0.0165	—
Mistralmistral	$0.15	$0.60	$0.015	—

Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.

Performance

Review reported latency and output-throughput percentiles from the latest observed rolling window.

Latest 30-minute observation

Time to first token · milliseconds

Latency distributionRolling 30-minute snapshot · 4 endpoints

P50P75P90P99

Mistralmistral/zdr

390–2,258.79 ms

Mistralmistral/us

270–662.12 ms

Mistralmistral/eu

418–1,156.02 ms

Mistralmistral

336–3,722 ms

All latency percentiles 4 endpoints

Endpoint	P50	P75	P90	P99
Mistralmistral/zdr	390 ms	473 ms	679.8 ms	2,258.79 ms
Mistralmistral/us	270 ms	279 ms	647.4 ms	662.12 ms
Mistralmistral/eu	418 ms	475 ms	579.6 ms	1,156.02 ms
Mistralmistral	336 ms	447 ms	910.6 ms	3,722 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 4 endpoints

P50P75P90P99

Mistralmistral/zdr

112–224 t/s

Mistralmistral/us

120–120 t/s

Mistralmistral/eu

90–165.7 t/s

Mistralmistral

119–211.05 t/s

All throughput percentiles 4 endpoints

Endpoint	P50	P75	P90	P99
Mistralmistral/zdr	112 t/s	187.75 t/s	216 t/s	224 t/s
Mistralmistral/us	120 t/s	120 t/s	120 t/s	120 t/s
Mistralmistral/eu	90 t/s	102 t/s	111 t/s	165.7 t/s
Mistralmistral	119 t/s	140 t/s	166.5 t/s	211.05 t/s

Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.

Uptime

Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.

Successful requests by window

Availability by endpointCurrent overlapping windows · 4 endpoints

Endpoint5 minutes30 minutes24 hours

Mistralmistral/zdrObserved Oct 10, 2026, 11:31 AM UTC

100%

Mistralmistral/usObserved Oct 10, 2026, 11:31 AM UTC

—

100%

Mistralmistral/euObserved Oct 10, 2026, 11:31 AM UTC

100%

99.83%

MistralmistralObserved Oct 10, 2026, 11:31 AM UTC

100%

Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.

Benchmarks

Review attributed evaluation results on each source's original scale.

External evaluations

mistralai/mistral-small-2603Observed Oct 10, 2026, 11:31 AM UTC

Benchmark profileArtificial Analysis · shared source scale from 0 to 30

Coding

26.6

Agentic

0.8

Intelligence

11.3

Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.

Detailed evaluations

Evaluation scoresAccuracy or item F1 · higher is better

gpqa diamondMistral: Mistral Small 4

75.758%

tau bench verified airlineMistral: Mistral Small 4

43.667%

Evaluation	Configuration	Source	Results	Details
gpqa diamond	Mistral: Mistral Small 4mistralai/mistral-small-2603	OpenRouter	75.758%	Details
Composite indices	Mistral Small 4 (Reasoning)mistralai/mistral-small-2603	Artificial Analysis	Intelligence 11.3 · Coding 26.6 · Agentic 0.8	Details
tau bench verified airline	Mistral: Mistral Small 4mistralai/mistral-small-2603	OpenRouter	43.667%	Details

Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 24, 2026.

Technical details & API

Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.

Current route specifications

mistralai/mistral-small-2603Observed Oct 10, 2026, 11:31 AM UTC

Context: 262,144
Maximum output: 209,715
Tokenizer: Mistral
Input: text, image
Output: text
Moderation: No
Added to OpenRouter: 2026-03-16

Base URLhttps://openrouter.ai/api/v1

Model IDmistralai/mistral-small-2603

Version IDmistralai/mistral-small-2603

Weights IDmistralai/Mistral-Small-4-119B-2603

Reasoning

Required: No
Enabled by default: No
Default effort: high
Supported efforts: high, none

Supported parameters

frequency_penalty
include_reasoning
max_tokens
presence_penalty
reasoning
reasoning_effort
response_format
seed
stop
structured_outputs
temperature
tool_choice
tools
top_p

Frequently asked questions

Answers based on the model metadata and serving offers currently in the catalog.

How much does Mistral Small 4 cost?

Listed rates start at $0.15 per million input tokens and $0.60 per million output tokens. Prices vary by provider and configuration; see Pricing for details.

Which providers offer Mistral Small 4?

There are 23 cataloged offers across 18 providers. Compare model IDs, prices and limits in Providers.

What is the context window?

The cataloged model context is 256,000 tokens. Each serving endpoint may apply a different limit.

Does it support tools and structured output?

Tool calling: Not reported. Structured output: Not reported. Support can vary by endpoint.

Resources

Hugging Face ↗

Catalog history · 3 recorded revisions

Metadata observations since this model was first cataloged. These are not model release versions.

Oct 20, 2026 · c353885b1091
Sep 14, 2026 · 9f9b57ec6bc3
Sep 12, 2026 · dd7aa4e83ea7