Mistral Medium 3.5

Key facts

Where Mistral Medium 3.5 sits in our data

• Released Apr 28, 2026 (week 18 of 2026), in April 2026. Other models in our data released that month: GPT-5.5, GPT-5.5 Pro, Qwen3.6-27B, GPT-Image-2, Claude Opus 4.7, GLM-5.1.
• The previous Mistral AI model we track is Voxtral TTS (Mar 23, 2026), 36 days earlier.
• Of the 60 models in our data with a published context window, Mistral Medium 3.5 has the number 48 largest (256K tokens). Our data is not every model on the market.
• Mistral AI tools we cover: Mistral Le Chat.
• All releases by date: AI model releases by month · new AI models this week. Choosing for code: best LLM for coding.

How Mistral Medium 3.5 differs from Mistral Small 4

Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.

• Listed price is $1.5 in and $7.5 out, against $0.15 in and $0.6 out for Mistral Small 4 (per 1M tokens).
• Both list a 256K-token context window.
• Mistral Medium 3.5 came out 43 days after Mistral Small 4.
• Facts for the other model: Mistral Small 4.

What we tested

Nothing yet. We have not run Mistral Medium 3.5 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.

Not verified, left out

We could not confirm these on a vendor page, so we do not state them.

• The license terms of "Modified MIT" were not captured; check the model card before commercial use.

Sources

• Mistral changelog
• Mistral model card: Medium 3.5

More from Mistral AI

• Mistral Small 4 (Mar 16, 2026)
• Voxtral TTS (Mar 23, 2026)
• Ministral 3 14B (Dec 2, 2025)
• Mistral Large 4 (Oct 6, 2026)
• Voxtral 3 (Oct 20, 2026)

All 88 models