Moonshot AI launches Kimi K3, 2.8T parameter open frontier model

Kimi K3 is an open frontier model with 2.8 trillion parameters, 1 million context, and native multimodal. Kimi Delta Attention enables up to 6.3x faster decoding in million-token contexts. Early benchmarks score it 57 on the Artificial Analysis Intelligence Index, comparable to Opus 4.8 and GPT-5.