Introducing Kimi K3: Open Frontier Intelligence

Kimi K3 is a 2.8 trillion parameter, 1 million context, native multimodal model released as open weights. It introduces Kimi Delta Attention for up to 6.3x faster decoding in long contexts and Attention Residuals for ~25% higher training efficiency. The model is competitive with frontier models like Fable 5 and Opus 4.8.