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.
- Organization
- Mistral
- Family
- mistral-small
- Providers
- 14
- Context
- 256,000
- Output limit
- 256,000
- Knowledge
- 2025-06
- Release
- 2026-03-16
- Updated
- 2026-03-16
- Weights
- Open
- Input
- text, image
- Output
- text
- Capabilities
- Tools, Reasoning, Temperature
Providers
Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.
| Provider | Model ID | Context | Output | Input / output · 1M | Reasoning | Tools | Structured | Details |
|---|---|---|---|---|---|---|---|---|
| AKI.IO | mistral4-119b | 262,144 | 81,920 | $0.20 / $0.60 | Yes | Yes | — | View |
| Cortecs | mistral-small-2603 | 262,144 | 256,000 | $0.156 / $0.625 | Yes | Yes | Yes | View |
| DevPass (LLM Gateway) | mistral-small-2603 | 262,144 | 256,000 | $0.15 / $0.60 | Yes | Yes | — | View |
| Eden AI | mistral/mistral-small-2603 | 262,144 | 256,000 | $0.15 / $0.60 | Yes | Yes | Yes | View |
| EmpirioLabs AI | mistral-small-4 | 256,000 | 65,536 | $0.15 / $0.60 | No | Yes | Yes | View |
| Infomaniak | mistralai/Mistral-Small-4-119B-2603 | 256,000 | 256,000 | $0.25 / $0.93 | Yes | Yes | — | View |
| Kilo Gateway | mistralai/mistral-small-2603 | 262,144 | 209,715 | $0.15 / $0.60 | Yes | Yes | Yes | View |
| LLM Gateway | mistral/mistral-small-2603 | 262,144 | 256,000 | $0.15 / $0.60 | No | Yes | Yes | 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 | $0.5811 / $2.44062 | Yes | Yes | No | View |
| Pioneer | mistralai/Mistral-Small-4-119B-2603 | 32,000 | 32,000 | $0.15 / $0.60 | Yes | Yes | — | View |
| Requesty | mistral-small-2603 | 256,000 | 256,000 | $0.165 / $0.66 | Yes | Yes | Yes | View |
| Requesty | mistral-small-2603@eu | 256,000 | 256,000 | $0.165 / $0.66 | Yes | Yes | Yes | View |
| SAP AI Core | mistralai--mistral-small | 128,000 | 128,000 | $0.07 / $0.28 | Yes | Yes | — | View |
| Tempr Gateway | mistral/mistral-small-2603 | 256,000 | 256,000 | $0.15 / $0.60 | Yes | Yes | — | 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.
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.
mistralai/mistral-small-2603Observed - 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.
Time to first token · milliseconds
All latency percentiles 3 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| Mistralmistral/zdr | 296 ms | 394 ms | 610 ms | 2,662.54 ms |
| Mistralmistral/eu | 459 ms | 581 ms | 825.8 ms | 1,622.36 ms |
| Mistralmistral | 288.5 ms | 367 ms | 579 ms | 1,335.91 ms |
Output throughput · tokens per second
All throughput percentiles 3 endpoints
| Endpoint | P50 | P75 | P90 | P99 |
|---|---|---|---|---|
| Mistralmistral/zdr | 116 t/s | 144 t/s | 167 t/s | 203.58 t/s |
| Mistralmistral/eu | 92 t/s | 101 t/s | 106 t/s | 170.24 t/s |
| Mistralmistral | 91 t/s | 114 t/s | 150 t/s | 207.9 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.
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.
mistralai/mistral-small-2603Observed Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.
Detailed evaluations
| 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 4, 2026.
Apps & session costs
Compare observed median session costs for applications using this model, grouped by conversation length.
| Application | Model route | Turns | Median cost / session | Details |
|---|---|---|---|---|
| Hermes Agent | mistralai/mistral-small-2603 | 2–9 turns | $0.00355 | Details |
Source: OpenRouter, as of Oct 2, 2026. Published under CC BY 4.0. These are observed costs per session, not token prices or a forecast for your workload. Apps are compared separately.
Technical details & API
Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.
mistralai/mistral-small-2603Observed - Context
- 262,144
- Maximum output
- 209,715
- Tokenizer
- Mistral
- Input
- text, image
- Output
- text
- Moderation
- No
- Added to OpenRouter
- 2026-03-16
https://openrouter.ai/api/v1mistralai/mistral-small-2603mistralai/mistral-small-2603mistralai/Mistral-Small-4-119B-2603Reasoning
- Required
- No
- Enabled by default
- No
- Default effort
- high
- Supported efforts
- high, none
Supported parameters
frequency_penaltyinclude_reasoningmax_tokenspresence_penaltyreasoningreasoning_effortresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_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 $0.07 per million input tokens and $0.28 per million output tokens. Prices vary by provider and configuration; see Pricing for details.
Which providers offer Mistral Small 4?
There are 18 cataloged offers across 14 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: Yes. Structured output: Not reported. Support can vary by endpoint.
Resources
Catalog history · 2 recorded revisions
Metadata observations since this model was first cataloged. These are not model release versions.
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