Moonshot AI launches Kimi K3, a 2.8T parameter open-weight model

Kimi K3 features 2.8 trillion parameters, 1 million context, native multimodal, and Kimi Delta Attention for up to 6.3x faster decoding. It scores 57 on the Artificial Analysis Intelligence Index, comparable to Opus 4.8 and GPT-5, and ranks 3rd on VoxelBench. The model is open-weight, with benchmarks showing strong performance on deep research tasks (71.6 mean score on DRACO).