10/28/2026
OpenAI's Astra just solved 10 open math problems, marking the moment AI transitioned from scoring well on tests to producing original discoveries. Every previous "AI breakthrough" headline simply meant a higher score on a known test with a known answer. Astra broke this pattern by tackling problems in math and theoretical computer science that had no known solution anywhere.
Costing approximately $2,000 in compute for one internal run, Astra established a new upper bound for the sphere-packing bound.
It successfully constructed an existence proof for non-sofic groups. Instead of just outputting answers, Astra published formal Lean proofs directly to GitHub.
This built-in formal verification allows any researcher to independently verify the logic step by step, closing the trust gap entirely without taking the model's word for it. AI just started doing science, not just answering questions.
Comment "ASTRA" below and I will DM you the breakdown of what Astra actually solved, why Lean proofs matter, and what this means for research work over the next 12 months.