Mistral Large 3: The 675B Open-Weight MoE Model Developer Guide

Mistral Large 3 launched in December 2025 as Mistral's flagship open-weight model. Six months later it remains the largest model Mistral has publicly released under a permissive license. This guide covers the architecture, benchmarks, pricing, and practical considerations for developers deciding whether to use it in 2026. What Mistral Large 3 Is Mistral Large 3 (model ID mistral-large-2512 , the 2512 indicating December 2025) is a sparse Mixture-of-Experts (MoE) model with 675 billion total para