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Mistral Medium 3.5
Mistral AI · Released 28 Apr 2026 · Open weights
Open model that answers quickly, but scores lower on hard tests.
Key facts
- Maker
- Mistral AI
- Released
- 28 Apr 2026
- Open weights
- Yes, you can download it and run it yourself
- License
- Modified MIT: free to use with conditions
- Memory (context window)
- about 262 thousand tokens (how much it can read at once)262,144 tokens exactly
- Size
- 128B parametersB = billion, T = trillion. Bigger usually needs a stronger computer.
Scores
"Independent" = run by an outside group. "Maker's own number" = the company's own claim.
All-roundArtificial Analysis Intelligence Index
14 index points #17 of 17 models scored independent
One combined score from many independent tests of how smart a model is.
as of 17 Oct 2026 · source
Chat & writingLMArena Text
1426 Arena score #15 of 15 models scored independent
When real people compare two AI answers side by side without knowing which AI wrote them, which one do they pick more often?
as of 15 Oct 2026 · source
Build websites & appsLMArena WebDev
1264 Arena score #18 of 18 models scored independent
When people ask two AIs to build the same website or app and compare the results, which one do they pick?
as of 17 Oct 2026 · source
SpeedOutput speed
160 tokens per second #5 of 16 models scored independent
How many tokens (pieces of words) per second the model writes once it starts answering. Higher is faster.
as of 17 Oct 2026 · source
How it compares
The 3 models closest to Mistral Medium 3.5 on the Artificial Analysis Intelligence Index, an all-round score. Mistral Medium 3.5: 14 index points, #17 of 17 models scored.
News about Mistral Medium 3.5 on ITG Now
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FAQ
Is Mistral Medium 3.5 free and open?
Mistral Medium 3.5 has open weights: you can download it and run it on your own computer or server. License: Modified MIT: free to use with conditions.
How much does Mistral Medium 3.5 cost?
There is no listed price per token. It has open weights, so you can run it yourself or through a host you pick.
What is Mistral Medium 3.5 best at?
Open model that answers quickly, but scores lower on hard tests. Its best result: #5 of 16 models scored on Output speed (speed).
Who makes Mistral Medium 3.5?
Mistral Medium 3.5 is made by Mistral AI. It came out on 28 Apr 2026.