Oxide and Friends discuss the open weight revolution with Simon Willison

On July 28, 2026, Bryan Cantrill and Adam Leventhal invited Simon Willison to join their podcast, Oxide and Friends, to discuss what Willison described as a wild week in the field of large language models. The resulting episode, “The Open Weight Revolution with Simon Willison,” was published to the Oxide and Friends feed and noted on Willison’s own site on July 31.

The conversation centered on Kimi K3, an open weight model whose performance the discussion frames as standing toe to toe with proprietary frontier systems. Willison’s accompanying post also links to his July 22 piece concerning an OpenAI-related cyberattack, indicating that incident featured among the topics the episode’s participants took up as part of the week’s developments.

Willison’s writeup gives an overview of the episode and points readers to the full recording via Transistor.fm, where the conversation is hosted. The post identifies Cantrill and Leventhal as his co-hosts and situates the discussion within the broader context of open weight models gaining ground against closed, proprietary alternatives.

No further detail on the cyberattack’s nature, scope, or resolution is given in the material provided. The published summary does not elaborate on what specifically Kimi K3 achieved beyond the characterization of it matching frontier proprietary models, nor does it specify additional topics covered during the episode beyond these two threads.