Moonshot AI releases Kimi K3, a 2.8T-parameter AI model that it says rivals Opus 4.8 and GPT-5.5, and plans to release model weights by July 27 (Kimi)

Moonshot AI has launched Kimi K3, a 2.8T-parameter AI model. The company claims Kimi K3 rivals Opus 4.8 and GPT-5.5, and is built on their Kimi Delta Attention and Attention Residuals. Moonshot AI also plans to release the model weights for Kimi K3 by July 27.