Moonshot AI has released Kimi K3's model weights and made parts of its infrastructure open source. The Chinese model nearly matches Western frontier models such as Fable 5 and GPT-5.6 Sol on popular benchmarks, but independent tests found major gaps in cyber and math performance, possibly pointing to distillation.

Closed systems create friction that hinders adoption and customization. Kimi K3's recent release suggests that the market may ultimately favor open architectures.

Moonshot AI releases Kimi K3, a 2.8 trillion parameter open-source model, intensifying the US-China AI competition and reshaping the market