Mistral: Mistral Medium 3.1
Mistral Medium 3.1, developed by MistralAI, is equipped with a context length of 131,072 tokens and supports text, image, and file inputs; it also allows the integration of external tools but lacks advanced reasoning or structured output capabilities. The model's broad modalities make it versatile for various tasks, though its performance in complex reasoning is limited. Given its blended benchmark score of 21.4 across three independent evaluations, Mistral Medium 3.1 is suitable for projects that require a mix of text and image handling without the need for advanced reasoning or structured outputs. Its pricing at $0.4 per input token and $2.0 per output token makes it accessible for those on moderate budgets while still offering decent performance; however, users should consider its limitations in more complex tasks before shortlisting it.
Benchmark results
Independent, published benchmarks. Blended score 21.4 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 24.3 |
| AI Index Coding | software engineering tasks | 33.8 |
| AI Index Agentic | multi-step tool-using tasks | 10.1 |
- Model ID
- mistralai/mistral-medium-3.1
- Vendor
- mistralai
- Released
- August 2025
- Tokenizer
- Mistral
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- default
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- not supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- no
What it costs in practice
Computed from the current $0.40/M input and $2.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.30 |
| A month of a busy support chatbot | 5M in / 2M out | $6.00 |
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Quick answers
- How much does Mistral: Mistral Medium 3.1 cost?
- $0.40 per million input tokens and $2.00 per million output tokens.
- What is Mistral: Mistral Medium 3.1's context window?
- 131,072 tokens, roughly 196 pages of text in a single request.
- Does Mistral: Mistral Medium 3.1 support tool calling?
- It supports tool calling, structured output.
- Can Mistral: Mistral Medium 3.1 process images?
- Yes, it accepts image input.