Mistral Medium 3.5

Released

Apr 28, 2026

Price in / out

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Blended $/1M

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Context

256K

Parameters: 128B. License: Modified MIT.

Benchmark scoresvs Mistral Small 4

Benchmark	Score	Δ vs prior	Rank (current)	Configuration	Source
Terminal-Bench 2.1	39%	—	#20 of 20	leaderboard	benchlm.ai ↗
SWE-bench Verified	77.6%	—	#4 of 8	leaderboard	benchlm.ai ↗
τ²-bench (Telecom)	94.2%	+53.0	#3 of 9	leaderboard	benchlm.ai ↗
Artificial Analysis Intelligence Index	29.9	+10.3	#7 of 10	leaderboard	benchlm.ai ↗

Mistral versions

Timeline

Version	Released	$ in / out	Terminal-Bench	SWE-bench	τ²-bench	AA Index
Mistral Large 3Superseded	2025-12-02	—	—	—	24.6%	15.9
Mistral Small 4	2026-03-16	—	—	—	41.2%	19.6
Mistral Medium 3.5	2026-04-28	—	39%	77.6%	94.2%	29.9
Mistral Large 4Preview	2026-10-06	—	—	—	—	—

Compare

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Every Mistral version over time

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Current open-weight peers

All

gpt-oss-120bOpenAI Gemma 4 31BGoogle DeepMind Muse Glimmer 30BMeta DeepSeek V4.1 Flash$0.14 in DeepSeek V4 Pro$0.435 in Kimi K3$3 in