Mistral Large 4 in public preview, open weights promised by end of October

Mistral released Mistral Large 4 (mistral-large-4) in public preview, an open-weight mixture-of-experts model with a 1M context window. Mistral says it will release the weights by the end of October 2026 after red-teaming. Listed API price is $1.36 input and $4.18 output per 1M tokens.

Who is affected:

Teams that want a self-hostable frontier-class model.

What to do:

Watch for the weights release at the end of October.