Mistral Large 4 enters API preview before its planned weight release

Mistral launched a public API preview of Large 4 on 6 October through Mistral Studio. The company describes a natively multimodal model with one trillion total parameters and 52 billion active parameters. It said training used 3,800 Nvidia Grace Blackwell GPUs in its European data centres.

The release separates immediate access from the planned open-weight distribution: weights were promised by the end of October, after further testing. That future commitment was not completed by the archive’s 15 October cutoff. Mistral reported strong coding, visual-grounding and enterprise-task results, while selected partners received reduced moderation for testing advanced cyber capabilities. For developers evaluating sovereignty claims, the model’s availability, hosting location and eventual licence are distinct questions that need separate confirmation.