Astral Codex Ten publishes long-form essays on AI safety, rationality, politics, science and culture, alongside reader book reviews and weekly open threads. Readers get argumentative, carefully reasoned writing plus community news such as meetups, surveys and grant-related projects.

The Pragmatic Engineer is a newsletter by Gergely Orosz covering Big Tech and startup engineering from the inside, with deep dives into AI tooling spend, developer infrastructure, and industry events. Readers get practical, data-backed analysis useful for software, AI, and engineering leaders.

Interconnects AI is a technical newsletter from inside frontier AI labs, covering open-weight model developments, geopolitics of AI regulation, and the future direction of AI research and engineering. Readers get analysis of model releases, policy moves, and grounded takes on AI progress without hype.

Grant Sanderson's mailing list for the 3Blue1Brown channel announces new math videos and occasional project updates. Recent issues reflect on AI's role in mathematics, the funding and value of math research, and the making of a video about a hard IMO problem.