News for hackers. Stuff that matters.

A comment on GPT-5.6 Sol Ultra produces proof of the Cycle Double Cover Conjecture [pdf]. Parent comment

Re:GPT-5.6 Sol Ultra produces proof of the Cycle Double Cove... by scrlk on Friday July 10, 2026 @03:47PM (#48864353)
Ultra = parallel subagents with max reasoning

Pro = test-time compute (best of N responses)

[ Parent | on HN ]
Re:GPT-5.6 Sol Ultra produces proof of the Cycle Double Cove... by prideout on Friday July 10, 2026 @03:57PM (#48864469)
Confused about how to access Ultra; I don't see it in on their plans page.
[ Parent | on HN ]
Re:GPT-5.6 Sol Ultra produces proof of the Cycle Double Cove... by prideout on Friday July 10, 2026 @04:00PM (#48864501)
Ah, I see it as a "reasoning level" in codex after typing /model
[ Parent | on HN ]
Re:GPT-5.6 Sol Ultra produces proof of the Cycle Double Cove... by simianwords on Friday July 10, 2026 @03:48PM (#48864368)
why would you use one over the other?
[ Parent | on HN ]