gpt-5-6-sol-ultra-1d0f93c0·2 events·first seen Aliases: GPT-5.6 Sol Ultra
OpenAI has published a PDF document claiming that GPT-5.6 Sol Ultra has produced a proof of the Cycle Double Cover Conjecture, a major open problem in graph theory unsolved since the 1970s. The conjecture states that every bridgeless graph has a cycle double cover, and its resolution would be a landmark result in combinatorics. If verified, this would represent a significant frontier capability milestone for AI-assisted mathematical reasoning. The HN post attracted 224 points and 203 comments, indicating substantial community attention.
A tweet by Thomas Sottiaux, gaining significant traction on Hacker News (288 points, 222 comments), claims that GPT-5.6 Sol Ultra will be integrated into OpenAI's Codex product. This would represent a new model version beyond the current OpenAI flagship GPT-5.5, suggesting an upcoming release or announcement. The community engagement indicates this is being treated as credible signal about OpenAI's near-term model roadmap.