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

Kimi K3 has 2.8 trillion parameters, 1 million context, native multimodal, and Kimi Delta Attention enabling 6.3x faster decoding. It ranks 3rd on VoxelBench behind Fable, and scores comparable to Opus 4.8 and GPT-5 on intelligence index. Microsoft is reportedly testing K3 for Copilot, potentially saving 60% per token.