GPT-5.6 Sol Rumored to Solve Formal Proofs
jasondeanlee · x · 2026-07-16
The post cites a capability showcase regarding GPT-5.6 Sol: someone claimed that by using a CDC prompt and multiple sub-agents, it solved Erdős Problem #796 in a few hours and fully formalized the proof in Lean.
However, a commenter threw cold water on this, noting that trying the exact same method on a non-Erdős problem would "bankrupt you," implying this approach might not be reliable for other problems. Overall, the discussion centers on the boundaries of models performing mathematical proofs and formal verification.
Related event: GPT-5.6 Solves Long-Standing Math Problems(4 posts)→
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