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

Noah Smith's blog covers economics, AI, politics, and culture, including essays on film, AI progress, and political critique. Readers get long-form analysis mixing policy commentary with personal reflections on current events.

Niall Ferguson's Time Machine is a Substack newsletter from historian Niall Ferguson that uses historical analysis to examine current economics, politics, and culture. Issues cover topics such as European protests and debt, American founding principles, election-year risks, and newly unlocked Nixon White House tape transcripts.

Persuasion is a community newsletter covering politics, culture, and the defense of free societies, including first-person war reporting from Ukraine, conversations with public intellectuals, and investigative pieces. Readers get analysis of current events, perspectives on reading and AI's cultural effects, and firsthand accounts from frontline-adjacent civilians.