In December 2025 Mistral released the weights of its Mistral 3 model family publicly but did not release the training data.

What this evidence bears on

• Supports: Mistral publishes the weights of its leading models, so anyone can run, study and adapt them.

  • A reason for “Mistral AI”

• Supports: Mistral keeps its training data secret, so outsiders still can’t check what its models learned from.

  • A reply in “Mistral AI”