mistralai

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.

Quality Score
95/100
price + capability + benchmarks
Input Price
$0.40
per 1M tokens
Output Price
$2.00
per 1M tokens
Context Window
131,072
tokens

Benchmark results

Independent, published benchmarks. Blended score 21.6 across 3 benchmarks, last refreshed 2026-07-27. How scoring works →

BenchmarkMeasuresScore
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 →

JobTokensCost
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.