Mistral AI · Released Aug 12, 2025Mistral Medium 3.1
Mistral model for multilingual chat, reasoning, and tool-assisted workflows.
- Capability
- —No ECI score yet
- Input
- $0.40per 1M tokens
- Output
- $2.00per 1M tokens
- Context
- 262K262K max output
What it costs
- Input
- $0.40per million tokens
- Output
- $2.00per million tokens
- Blended (3:1)
- $0.80pricier than 50% of priced models
Typical monthly bills
| Monthly usage | Estimated cost |
|---|---|
| Side project2M input + 0.5M output tokens | $1.80 |
| Team assistant25M input + 5M output tokens | $20.00 |
| Production app250M input + 50M output tokens | $200.00 |
Official Mistral API price, as listed on models.dev.
Independent benchmarks
Epoch AI has not published a Capabilities Index score for Mistral Medium 3.1 yet.
The details
- Lab
- Mistral AI
- Released
- Aug 12, 2025
- Knowledge cutoff
- May 2025
- Context window
- 262,144 tokens
- Max output
- 262,144 tokens
- Inputs
- Text, Images
- Output
- Text
- Reasoning
- No
- Tool calling
- Yes
- Structured output
- No
- Weights
- Proprietary
- API model ID
mistral-medium-2508on Mistral- Availability
- 1 API providerlisted on models.dev
More from Mistral AI
About Mistral Medium 3.1
How much does Mistral Medium 3.1 cost?
Mistral Medium 3.1 costs $0.40 input / $2.00 output per million tokens (official Mistral API price). At a 3:1 input-to-output mix that is $0.80 per million tokens, more expensive than 50% of the 360 priced models we track.
What is the context window of Mistral Medium 3.1?
Mistral Medium 3.1 accepts up to 262,144 tokens per request and can write up to 262,144 tokens in one response.
How good is Mistral Medium 3.1?
Epoch AI has not published a Capabilities Index score for Mistral Medium 3.1 yet.
Is Mistral Medium 3.1 open source?
No. Mistral Medium 3.1 is proprietary; you use it through Mistral’s API or partner platforms.
What inputs does Mistral Medium 3.1 support?
Mistral Medium 3.1 accepts text and images and replies in text. It is not a dedicated reasoning model, supports tool calling.
When was Mistral Medium 3.1 released?
Mistral AI released Mistral Medium 3.1 on Aug 12, 2025. Its training data runs to May 2025.
What are the best alternatives to Mistral Medium 3.1?
The closest current models from other labs on capability, price and release date are GLM-4.5V (Z.ai (Zhipu), $0.60 / $1.80), Qwen3-Next 80B-A3B Instruct (Alibaba (Qwen), $0.50 / $2.00), Ling-1T (inclusionAI, $0.57 / $2.29) and GPT-5.1 Codex mini (OpenAI, $0.25 / $2.00).