Simon Willison on GPT-Live and the Bun rewrite

Category: Pulse
Status: discussion
Sources: GPT-Live post, Bun rewrite post
Summary: Simon Willison published notes on 2026-07-08 on both releases. He reports weeks of preview access to GPT-Live in the ChatGPT iPhone app and calls the model impressive, and he describes the Bun Zig-to-Rust rewrite as a sophisticated piece of agentic engineering using dynamic workflows, trial runs, and adversarial review. Both are discussion, linked to the primary announcements covered in Top stories.
Why it matters: A tracked practitioner with preview access adds first-hand context to two of the day's releases.