@rohanpaul_ai: This is so great. GPT-5.6 Sol Ultra produced a 50-year-old conjecture proof using 64 subagents within one hour. The pro…

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GPT-5.6 Sol Ultra, released by OpenAI, reportedly proved the 50-year-old Cycle Double Cover Conjecture in under one hour using 64 subagents, marking a major AI breakthrough.

This is so great. GPT-5.6 Sol Ultra produced a 50-year-old conjecture proof using 64 subagents within one hour. The prompt directed 64 agents toward competing approaches, repeated audits, and rejection of partial arguments. OpenAI’s release says GPT-5.6 Sol Ultra parallelizes difficult work through multiple subagents.
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Cached at: 07/11/26, 01:29 PM

This is so great.

GPT-5.6 Sol Ultra produced a 50-year-old conjecture proof using 64 subagents within one hour.

The prompt directed 64 agents toward competing approaches, repeated audits, and rejection of partial arguments.

OpenAI’s release says GPT-5.6 Sol Ultra parallelizes difficult work through multiple subagents.

Ethan Knight (@eknight): Yesterday, we made GPT-5.6 Sol Ultra generally available. Today, we’re sharing that it produced a proof of the 50-year-old Cycle Double Cover Conjecture using 64 subagents in just under one hour. We’re sharing the prompt and proof below. We’re excited to see what you all do with

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