Simon Willison @simonw

The most important thing about Sonnet 5.5 is that it's now the model that powers the free tier on https://t.co/f1IGIsU4Hc - so all of this stuff can be done by free users ChatGPT's free tier is still GPT-5.6 Luna, which is a lot less capable [引用 @claudeai]: A thread of early experiments with Claude Sonnet 5.5. A fall foliage simulator by @_re_pete, made with Sonnet 5 vs Sonnet 5.5. https://t.co/bVbUmS7tSw

• Simon Willison: October 2026 is the vibe game dev inflection point2026-10-28
• Developer builds AI-coded RTS with audio-based multiplayer2026-10-20
• Developer builds 500 clocks in one 6.3 MB HTML file with Opus 5.52026-10-18
• Simon Willison builds blog feature using voice mode2026-10-09
• Simon Willison urges default hard budget caps on APIs2026-10-04