The Kimi K3 architecture is a scaled-up production version of the Kimi Linear model, increasing from 48 billion parameters to 2.8 trillion parameters. A new component in Kimi K3 is the LatentMoE, which enhances its capabilities as the largest open-weight model currently available.

Moonshot AI's Kimi K3 was launched on July 17 but halted new subscriptions due to overwhelming demand. The company plans to release K3's full model weights by July 27, enabling other organizations to host and modify the model.

Nearly 200 Silicon Valley companies, including Proton and Y Combinator, are urging the Trump administration to maintain access to Chinese open-weight AI models. They warn that blocking these models could jeopardize the development of the next generation of AI technologies.

OpenAI and Anthropic are warning U.S. policymakers about the risks posed by powerful Chinese open-weight AI models. Their alignment on this issue contrasts with the views of researchers and advocates who support broad access to AI for competition and scientific progress.