Mistral Large 4 AI model leads open-weight coding tests, Mistral says

Mistral AI released the weights for its Mistral Large 4 AI model on October 29, 2026, giving businesses and governments a trillion-parameter system they can download, customize and run themselves. Nicknamed “Le Chonk,” the multimodal model leads open-weight coding benchmarks, according to Mistral, while combining defensive cybersecurity capabilities with lower token use. Key takeaways Le Chonk was trained from scratch on European infrastructure. Mistral reports open-weight leads on FrontierCode and Terminal-Bench. Commercial Model-as-a-Service providers need a separate license.