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

Kimi K3 features 2.8 trillion parameters, 1 million token context, and native multimodal capabilities with Delta Attention for 6.3x faster decoding. In DeepSWE benchmarks, it performs near Claude Fable 5 at ~35% of the cost, with a 2.8x higher solve rate per dollar.