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Mistral Medium 3.5

Mistral AI

Released
April 28, 2026
Data date
September 8, 2026
Benchmark-Meta-Score
Minimum coverage not met
Speed
147.8 tokens/s
Output throughput
Price
Input · Output / 1M tokens
Input
Text, Image
Output
Text

New in Mistral Medium 3.5 is the combination of 128 billion dense parameters, text and image input, and a 256,000-token context window.

Mistral describes Medium 3.5 as the successor to Mistral Medium 3.1. The Modified MIT license sets the deployment terms.

Specifications and access

SpecificationValue and source
Weights
Open weightsSource
Access
API, LocalSource
Parameters
128BSource
Context window
262,144 tokensSource
Notes
Coding-focused current API model; dense 128B modelSource
Provider model name
Mistral Medium 3.5Source
License
Modified MITSource
Release
2026-04-28Source
API model ID
mistral-medium-3-5Source
Parameters
128 BSource
Architecture
dense transformerSource
Input
Text, ImageSource
Output
TextSource
Reasoning mode
Tool calling
Structured output