Mistral

Mistral Medium 3.1

CTX262K

Retired

74Quality

Vision · Tools

Input$0.40/M

Output$2/M

Mistral model for multilingual chat, reasoning, and tool-assisted workflows

PaidProprietary637/1044

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MistralTextUncommonRetired

Mistral Medium 3.1

Mistral model for multilingual chat, reasoning, and tool-assisted workflows

mistral-medium-2508

Type: Text
Quality: 74 · Top 26% on the LMArena Text
Context window: 262,144 tokens
Max output: 262,144 tokens
Input price: $0.40 / 1M tokens
Output price: $2.00 / 1M tokens
Cache read: —
Cache write: —
Released: Aug 12, 2025
Knowledge cutoff: May 2025
Takes in: Text, Image
Puts out: Text
Reasoning: No
Tool calling: Yes
Structured output: No
File attachments: Yes
Access: Paid
License: Proprietary
Rarity: Uncommon
Set number: 637/1044

Open Mistral docs Quality 74 Where to run it 5 Evolution 2/3 Meet its creature Battle Grok Build 0.1

Weights aren’t public. Use is governed by Mistral’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: docs.mistral.ai.

How good is it?

Public leaderboard scores for Mistral Medium 3.1, refreshed daily from Epoch AI and LMArena.

Top 26% of the 416 models on the LMArena Text: #107.

Quality is the share of a leaderboard’s models this one beats, from 0 to 100. Chat models are rated on Epoch AI’s Capabilities Index when it lists them, otherwise on LMArena; image and video models on LMArena’s image and video arenas.

Leaderboards

LMArena Text#107 of 416
People compare two anonymous answers and vote for the better one.1,424 rating
LMArena Text · Coding#131 of 411
The text arena’s coding prompts only.1,433 rating
LMArena Text · Math#143 of 400
The text arena’s math prompts only.1,408 rating
LMArena Text · Creative writing#115 of 414
The text arena’s creative writing prompts only.1,391 rating
LMArena Vision#107 of 165
Questions about images, voted by people.1,172 rating

Scores from LMArena, licensed CC BY 4.0. Boards list models under their own names, so a close match is shown with the name it was scored under. Credits

Where to run it

5 providers sell Mistral Medium 3.1 through an API. Prices are per million tokens, cheapest first.

CheapestKilo Gateway$0.40 in · $2.00 out
From the labMistral$0.40 in · $2.00 out

API providers

Provider	Input	Output	Context
Kilo GatewayCheapest paid`mistralai/mistral-medium-3.1`	$0.40	$2.00	131K
MistralOfficial`mistral-medium-2508`	$0.40	$2.00	262K
NanoGPT`mistralai/mistral-medium-3.1`	$0.40	$2.00	131K
OpenRouter`mistralai/mistral-medium-3.1`	$0.40	$2.00	131K
AI/ML API`mistralai/mistral-medium-3.1`	$0.55	$2.75	131K

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current text models from other labs at a similar output price.