Mistral

Mistral: Mistral Medium 3.1

Mistral Medium 3.1 Overview

Mistral Medium 3.1, released in August 2025 as the mistral-medium-2508 update, is a proprietary frontier model from Mistral AI positioned between smaller open models and high-end closed LLMs. It is multimodal, handling both text and image inputs, with a context window of ~128K tokens.

Compared to Mistral Medium 3.0, the 3.1 release introduces improvements in reasoning, coding, STEM, and enterprise workflows, along with better tone control for conversational and business applications. It is designed for scalable enterprise deployments, including hybrid cloud and on-premises VPC setups. As part of Mistral’s Premier line, Medium 3.1 is a commercial-only offering: while it delivers strong accuracy and performance, trade-offs include higher costs than open-weight models, restricted fine-tuning access, and increased latency/cost for very large contexts.

Mistral Medium 3.1 Interactive Demo

Mistral Medium 3.1 Details & Performance

Details

Resources

Vision Tasks

Vision LanguageOCRVisual Question AnsweringCaptioning

Features

Multimodal Vision

Usage

Past 30 Days

Performance

Avg. Latency

Arena Rankings

Mistral Medium 3.1 Pricing

Mistral Medium 3.1 costs $0.400 per 1M input tokens and $2.00 per 1M output tokens.

Input$0.400 / 1M tokens
Output$2.00 / 1M tokens
Cached input$0.040 / 1M tokens

Pricing updated Jun 28, 2026

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Mistral Medium 3.1 License

Proprietary

License terms and commercial-use guidance for Mistral Medium 3.1.

License information is provided as a guide and is not legal advice.