Latest / August 9, 2026
9 posts from engineering leaders published August 9, 2026, by Simon Willison, David Heinemeier Hansson, Jamie Tanna and 2 more.
Claude Fable 5 and Claude Mythos 5 were first released on June 9, 2026. On June 12, 2026, Anthropic suspended access to both models to comply with U.S. Department of Commerce export controls; the Department lifted those controls on June 30, 2026, and Anthropic restored access on…
Claude Fable 5 and Claude Mythos 5 were first released on June 9, 2026. On June 12, 2026, Anthropic suspended access to both models to comply with U.S. Department of Commerce export controls; the Department lifted those controls on June 30, 2026, and Anthropic restored access on…
GitHub Models is now retired I missed this news until today, when the GitHub Actions run for my simonw/research repository failed with this error message: GitHub Models is temporarily unavailable as part of a scheduled retirement brownout. That message is already stale, because…
GitHub Models is now retired I missed this news until today, when the GitHub Actions run for my simonw/research repository failed with this error message: GitHub Models is temporarily unavailable as part of a scheduled retirement brownout. That message is already stale, because…
Research: SQLite compressed text-history prototypes I'm perennially interested in options for storing revision histories in relational databases. While out on a dog walk I had a new idea: how about taking the full text of every prior version in a big JSON array of strings and…
The age of agents has brought us endless execution. Every idea, every hunch, every experiment is now within immediate reach. For people with endless ideas, this is nirvana. It's also the most fucking sci-fi thing I've ever been privy to. The internet was a revelation, but it all…
Ditto to last week: still not finished my Canada blog post Was a bit of a busier week with Anna in the office for a good chunk of the week And a pretty intense week at work on top of that 😬 Continuing to try and refine the plan Claude needs to implement for my Micropub rewrite…
And a simple test for engineers who say they want to become managers.
This somewhat widely cited post (I keep seeing it cited, anyway) suggests that dynamic languages and/or languages that represent things more concisely are more token efficient. It seems to be cited enough that LLM search results agree. For example, when I searched for "dynamic…