Mistral Medium 3.5

Name: Mistral Medium 3.5
Price: 1.5 USD
Author: Mistral AI

Mistral AI🇫🇷 France

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Context window256K tokens

Input / 1M tokens$1.5

Output / 1M tokens$7.5

Version History

3.5minorMay 22, 2026

Mistral Medium 3.5 merges instruction-following, reasoning, and coding into a 128B dense model with 256k context. Released as open weights under modified MIT license with configurable reasoning effort and new vision encoder.

Coverage

model releaseMistral AI

Mistral Releases Medium 3.5: 128B Model with Cloud Coding Agents and 77.6% SWE-Bench Verified

Mistral AI released Medium 3.5, a 128B dense model with a 256k context window that scores 77.6% on SWE-Bench Verified. The model powers new remote coding agents in Mistral Vibe that run asynchronously in the cloud, plus a new Work mode in Le Chat for multi-step agentic tasks.

May 28, 2026 · 10:09 AM3 min read

Mistral AI model release coding agents