Mistral Medium 3.5.1 release date
ForecastMistral AIlanguage model
Mistral Medium 3.5.1 has not been announced. Based on how often Mistral AI ships new versions, our forecast is that it arrives around November 19, 2026, probably between October 30, 2026 and January 3, 2027.
The forecast
| Most likely | November 19, 2026 |
|---|---|
| Window | October 30, 2026 to January 3, 2027 |
| Chance it arrives in that window | About 18% |
| Follows | Mistral Medium 3.5 (out April 30, 2026) |
| Based on | no earlier gap to learn from, so we assume about 75 days |
How we got this
Mistral AI is the maker of Mistral Medium 3.5. We look at the gaps between its earlier versions (Mistral Medium 3.5, 2026-04-30) and project the next one. It is a guess from a pattern, not news: the maker has not said Mistral Medium 3.5.1 exists. This page turns into the launch page, with price and facts, as soon as the model shows up on OpenRouter, Hugging Face or GitHub.
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Predicted automatically by Modelcast. Not affiliated with Mistral AI.