Mistral: Mistral Medium 3.1
Mistral Medium 3.1 from MistralAI is capable of processing text, images, and files within a context length of up to 131,072 tokens; however, it does not support reasoning or structured output. While the model can utilize external tools, its benchmark score in the AI Index stands at 24.2 out of 100 across three independent benchmarks, with specific scores of 33.8 for coding and 10.2 for agentic tasks. The pricing is $0.4 per million input tokens and $2.0 per million output tokens. This model should be considered by users who need a versatile tool that can handle multiple modalities but do not require advanced reasoning or structured outputs. Given its blended benchmark score of 21.7, it performs adequately across the tested domains, making it a cost-effective choice for those looking to integrate text and file processing into their workflows.
Benchmark results
Independent, published benchmarks. Blended score 21.6 across 3 benchmarks, last refreshed 2026-07-27. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 24.2 |
| AI Index Coding | software engineering tasks | 33.8 |
| AI Index Agentic | multi-step tool-using tasks | 10.2 |
- 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 |
Similar models
Mistral: Mistral Medium 3
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Mistral: Ministral 3 3B 2512
Mistral: Codestral 2508
Mistral: Ministral 3 14B 2512
Mistral: Ministral 3 8B 2512
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.