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Mistral Small 3.1

Open-weights 24B with vision and a 128K window at bargain prices.

mistralmistralopen source

Specs

Context window
128,000
Max output
8,192
Modalities
text, image
Tool use
Vision
Streaming
License
apache-2.0
Released
2025-03-17

Pricing

Input / 1M
$0.10
Output / 1M
$0.30

Cost estimate

Estimated monthly cost$0.16

Mistral Small 3.1 is a 24B Apache-2.0 model that handles text and images, supports tool calls, and runs a 128K context. At $0.10/$0.30 per million tokens it sits in the same price tier as Gemini Flash and GPT-4o-mini, but you can also self-host the weights. Aimed at builders who want a capable multimodal workhorse without per-call lock-in.

Editor's verdict

Pick this when you need a small multimodal model you can actually run on your own GPUs—it's one of the few open-weight options at this size with real vision support. Raw quality trails GPT-4o-mini and Gemini 2.0 Flash on hard reasoning and OCR-heavy tasks, and it's not a thinking model, so don't expect deep chains of thought. The sweet spot is high-volume document or image classification where ownership matters more than the last few benchmark points.

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Last updated: 2026-04-29

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