All hail Claudius, an instance of Sonnet 3.7 which has been running a business inside Anthropic for a while. Claudius is the 'idiot in a fridge' precursor to 'a country of geniuses in a datacenter'.

Showed my kid kites for, literally, the first time in their life. The most amazing part of being a parent is getting to experience things anew.

New Anthropic report: Build AI in America. We outline what it will take to ensure America has the energy and infrastructure it needs to maintain its leadership in AI.

Sometimes I write the stories for Import AI in a week, sometimes I write eight and pick just one on Sunday afternoon to finish, and very rarely I enter a kind of fugue state and oneshot something, as happened today. These tend to be weirder ones. Coming to you this Monday!

Hiked today in dawnlight amid wind sussurating through yellow grass. The sun cut the landscape into gold and grey. #VOTENATURE2025

We just shipped automated security reviews in Claude Code. Catch vulnerabilities before they ship with two new features: - /security-review slash command for ad-hoc security reviews - GitHub Actions integration for automatic reviews on every PR

Witnessed the sun torch the ridgeline of Mt Diablo, then watched it rise above; a golden bomb that bore iridescent holes into my eyes from gazing at it directly. #VOTENATURE2025