June 2026 newsletter
Simon Willison's June 2026 sponsors-only newsletter is now available, covering topics such as Claude Fable 5, GPT-5.6, US export restrictions, GLM-5.2, Datasette Apps, and various model releases. The newsletter is accessible to GitHub sponsors, with a $10/month sponsorship option to stay a month ahead of the free copy.
Background
Simon Willison is a well-known open-source developer and advocate, creator of Datasette (a tool for exploring and publishing data). His sponsors-only newsletter covers the fast-moving AI/LLM landscape with a practitioner's perspective, often months before broader news breaks. The June 2026 edition references unreleased or preview-stage models (Claude Fable 5, GPT-5.6, GLM-5.2), US export restrictions on AI tech to China, and "Tokenmaxxing" (an industry term for squeezing maximum performance out of prompt tokens, now considered passé). Datasette Apps is a new product/service tier. The newsletter is available early to GitHub sponsors.