GPT-5.6 Ultra Proves 50-Year-Old Conjecture

StartupYou · x · 2026-07-11

A repost claims that **GPT-5.6 Sol Ultra** has proven a **50-year-old** mathematical conjecture—the **Cycle Double Cover Conjecture**. Further details reveal that just one day after becoming "officially available," the model completed the proof today in **under 1 hour** using **64 subagents**. The official team also shared the prompt and proof, inviting researchers to further explore the boundaries of its capabilities.

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