Mistral Large 3, the Mistral AI model in numbers

What you need to know

Mistral Large 3 is a language model from Mistral AI, released on December 2, 2025. That makes it 10 months old as of October 22, 2026. Its weights are published: you can download it and run it on your own servers, or use one of the 17 API providers that list it on models.dev. It has no declared reasoning mode: it answers directly, without an extra billed thinking step.

We file it under open-weight models (68 models in this category on the site).

Measured performance

Epoch AI publishes 2 results for Mistral Large 3 on our basket's benchmarks: too few to compute a reliable capability index.

• GPQA Diamond (PhD-level science questions): 38.8% — the best tracked model, Gemini 4 Argon, reaches 96.4%
• OTIS Mock AIME (competition mathematics problems): 1.9% — the best tracked model, GPT-5.5 Pro, reaches 100%

Pricing and budget

Mistral Large 3 costs $0.50 per million input tokens and $1.5 per million output tokens (median of 17 providers, checked on October 22, 2026).

To put it in perspective: reading 20,000 tokens (about thirty pages) and writing 2,000 costs roughly $0.013; a thousand of those tasks, $13.

That is 1.5 times the median output price of open-weight models ($1).

To estimate your own budget, use the agent cost calculator.

Technical specifications

Its context window reaches 128,000 tokens, roughly 192 pages of text at 500 words per page: enough for a medium-length document. A single answer can run to 262,144 tokens.

It accepts as input: text and image. Its knowledge stops at December 2024: beyond that, it needs web search or your documents.

It can call tools (functions, APIs), which makes it a possible foundation for an AI agent.

Who is it for?

Given its category, Mistral Large 3 is mainly aimed at projects where you want control over your data or hosting, or want to adapt the model to your field.

Before adopting it, test it on your own examples: benchmarks measure standard tasks, not your job.

What could replace it?

In the same category, the models closest to Mistral Large 3 are:

• Magistral Small 1.2 (Mistral AI, $1.5 per million output tokens)
• Step 3.7 Flash (StepFun, $1.21 per million output tokens)
• MiniMax-M3 (MiniMax, index 55.5)
• Muse Glimmer 30B (Meta, $1.2 per million output tokens)