The open-source crown just changed hands. Mistral (France) shipped Mistral Large 4. Open weights are out now, FP8 and NVFP4, so you can self-host it. Specs: 1.05T params total, 52B active (MoE). Native multimodal. 1M-token context. Function calling, structured output, agents. Benchmarks: - DeepSWE v1.1: 61.7% - SWE-Atlas-QnA: 59.4% - Terminal-Bench 4.0: 41% (#1 open-source) - FrontierCode 2.0: 19.7% (#1 open-source) - Coding Agent Index: 48% (tied #1 open-source with GLM-5.3, on 47% fewer tokens)
The open-source crown just changed hands. The open-source crown just changed hands. The open-source crown just changed hands. The open-source crown just changed hands.