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Mistral: Mistral Small 3.1 24B

Mistral Small 3.1 24B Overview

Mistral Small 3.1 24B, released on March 17, 2025, is an open-weight multimodal model from Mistral AI, distributed under the Apache-2.0 license. With around 24B parameters and a 128K token context window, it is available in both base and instruction-tuned (“Instruct”) variants. The model introduces vision support alongside text, enabling tasks like multimodal reasoning, captioning, and image-based Q&A.

It is multilingual, supporting many languages, and is optimized for fast responses, function calling, structured dialogue, and long-context reasoning. Despite its size, the model can be run locally in quantized formats, fitting on machines with ~32GB RAM, making it accessible to developers outside large cloud setups. However, the output length is smaller than the 128K input window, meaning long generations may require chaining. In addition, using full vision features or the maximum context window significantly increases compute costs, and performance on highly complex reasoning or enterprise-scale tasks still trails larger proprietary frontier models.

Mistral Small 3.1 24B Interactive Demo

Mistral Small 3.1 24B Details & Performance

Details

Resources

Vision Tasks

CaptioningChart Question AnsweringClassificationDocument Question AnsweringImage TaggingMulti-Label ClassificationOCRVision LanguageVisual Question Answering

Features

Foundation VisionLLMs with Vision CapabilitiesMultimodal Vision

Usage

Past 30 Days

Performance

Avg. Latency

Arena Rankings

Mistral Small 3.1 24B Vision Evals

Mistral Small 3.1 24B has not yet been evaluated on the current benchmark. The results below are from the legacy version of Vision Evals, our previous benchmark. See the current Vision Evals

Visual Understanding

77 models · 67 tasks
HighestLowest
This model#71 of 7738.81% pass rate · better than 6%
Score38.81%pass rate across 67 tasks
Speed3.18savg response per task
Cost$0.0005 / task$0.351 in · $0.555 out / 1M
Tokenstokens unavailable
Score key:≥75%40–74%<40%
CategoryPassedScore
Defect Detection10 / 15
66.7%
Object Understanding7 / 14
50%
Spatial Understanding8 / 19
42.1%
Document Understanding1 / 9
11.1%
Object Counting0 / 10
0%
HighestLowest
This model#55 of 5834.67% pass rate · better than 5%
Score34.67%pass rate across 199 tasks
Speed17.00savg response per task
Cost$0.0001 / task$0.351 in · $0.555 out / 1M
Tokenstokens unavailable
Score key:≥75%40–74%<40%
CategoryPassedScore
Text Recognition21 / 30
70%
Focused Scene OCR30 / 99
30.3%
VQA & Extraction18 / 60
30%
Handwritten Math0 / 10
0%

Scores based on a single evaluation run · Methodology

View all legacy Vision Evals results →

Mistral Small 3.1 24B Pricing

Mistral Small 3.1 24B costs $0.351 per 1M input tokens and $0.555 per 1M output tokens.

Input$0.351 / 1M tokens
Output$0.555 / 1M tokens

Pricing updated Aug 23, 2026

Price vs. performance

Estimated cost per task vs. Visual Understanding score, for this model and others ranked near it. Upper-left is the sweet spot (high quality, low cost). Based on Vision Evals (legacy) results.

6 of 7 models plotted · 1 not yet evaluated

ModelScoreMedian tokensEst. cost / taskCompare
AnthropicClaude Haiku 4.558.2%2.3K$0.0030Compare
OpenAIGPT-5 Nano58.2%2.7K$0.0003Compare
QwenQwen3.5 397B A17B58.2%1.5K$0.0006Compare
GoogleGemini 2.5 Flash55.2%476$0.0005Compare
GoogleGemini 2.5 Flash-Lite53.7%301<$0.0001Compare
MistralMistral Small 3.1 24B(this model)38.8%
MoonshotAIKimi K2.535.8%2.7K$0.0024Compare

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Mistral Small 3.1 24B License

Apache-2.0 · Permissive license

Mistral Small 3.1 24B is released under Apache-2.0, a permissive license. The Mistral Small 3.1 24B license lets you run, fine-tune, and redistribute the model in commercial products with no obligation to open-source related code changes, so no separate commercial license is required.

Commercial use
Permitted. Because Apache-2.0 is permissive, Mistral Small 3.1 24B can ship inside paid products and internal systems with no commercial license and no revenue threshold.
Modification
Permitted. Fine-tuning, quantizing, and distilling are all allowed, and your code changes can stay closed. Files you change must be marked as changed.
Redistribution
Permitted with attribution. Ship the Apache-2.0 license text and any NOTICE file alongside the weights or derived code.

Apache-2.0 grants an express patent license that terminates if you bring a patent claim over the work, and it disclaims warranties. Validate Mistral Small 3.1 24B on your own data before you depend on it in production.

Read the full Apache 2.0 license ↗

Do I need a commercial license for Mistral Small 3.1 24B?

This is the straightforward case: a permissive license is the best technical solution and you are free to deploy Mistral Small 3.1 24B commercially without open-sourcing your own code.

Do not hesitate to reach out with questions for your commercial project — our team will help you start solving business problems on the first call. See Roboflow commercial licensing for the models included in each plan.

Talk to sales

This model is released under the Apache License 2.0, a permissive open-source license that allows commercial use, modification, distribution, and patent use.

Yes. Under the terms of the Apache 2.0 license, you can freely use this model for commercial purposes, including in proprietary products. You must retain the copyright notice and disclaimers when redistributing.

License information is provided as a guide and is not legal advice.

Frequently Asked Questions About Mistral Small 3.1 24B Vision

Yes. Mistral Small 3.1 24B accepts image input, and on Roboflow's previous vision benchmark it passed 38.8% of visual understanding tasks (#71 of 77) and scored 34.7% on OCR. You can test it on your own image in the demo above.

Mistral Small 3.1 24B has not yet been evaluated on Roboflow's current Vision Evals. The results on this page are from the previous benchmark.

Yes. The demo on this page runs Mistral Small 3.1 24B in the free Roboflow Playground: upload an image and see results in seconds. A free account unlocks unlimited runs.