Daily briefing index

Saturday, September 12, 2026

Morning and afternoon are separate, focused editions. Choose one to read or share directly.

Morning brief

Altman opens the door to slowing frontier development · Twenty-five Fields Medalists turn AI’s math advance into a labor dispute

Open this edition End of day

Anthropic turns frontier pacing into a two-lab conversation · OpenAI takes a 2026 IPO off the table