AI Matters
Why it matters
OpenAI model solves 50-year-old mathematics conjecture
The Decoder OpenAI's GPT-5.6 Sol Ultra reportedly solves a 50-year-old math problem in under an hour
OpenAI's GPT-5.6 Sol Ultra model produced a proof for the Cycle Double Cover Conjecture in under an hour by deploying 64 subagents working in parallel.
Why it matters
This milestone demonstrates that advanced AI reasoning can solve complex, long-standing academic problems without human guidance.
Latest brief · Jul 22, 2026