Kimi K3 is a mixture-of-experts model with 104 billion active parameters that elevates open-weights models to a new performance tier and has released complete infrastructure tools for large-scale agent training.
A change to US copyright law could clarify training data usage and ban distillation restrictions, while Chinese manufacturers increasingly pursue open-source releases.
Kimi K3 is the most powerful open-source model ever released, closing the gap between open-source and frontier models from an estimated 6–9 months to approximately 3–5 months.
