Science Markets
Markets / PNP / Round 5

Round 5

One saved weekly assessment of P equals NP., kept as it was published. It is an estimate from three models reading the evidence, not proof the hypothesis holds, and it did not set any price.

The round
Published
Nov 09, 2026 06:40 PM EST
Estimate
9%
Range the models covered
1–15%
Confident binary
No unanimous verdict this round.
Methodology
panel-v9
Round hash
2c81bf47217520a33ca32c11adaede35cc35504f04e84995d154ffd692f9d1e6

The hash commits to this round's recorded bytes. It does not prove the wording is sound or that the science is right.

What each model said
OpenAI 0.10

openai/gpt-6.1-sol

The checked sources provide neither an unconditional ZFC proof of equality nor one of inequality; Clay continues to describe the problem as open. My low probability for equality is a tentative mathematical judgment, not a measured frequency or established separation. Oracle results demonstrate limitations of proof techniques and cannot satisfy either resolution criterion.

What would change this view: An independently scrutinized unconditional ZFC proof of a worst-case polynomial-time SAT algorithm would sharply raise my estimate and support YES.

Anthropic 0.01

anthropic/claude-sonnet-5.5

P vs NP is still open. Clay lists no solution, and a 2026 status page says no accepted proof exists either way. The recent claimed refutation of ETH is a subexponential 3-SAT algorithm, which does not give a polynomial-time algorithm. I found no unconditional ZFC proof of P = NP or of P != NP, so the hypothesis is not established. This is a NO on the P = NP claim in the sense of 'not established', not a proof of the contrary.

What would change this view: A peer-reviewed, independently verified polynomial-time SAT algorithm with a proven worst-case bound would move this toward YES. A verified ZFC proof of P != NP would settle it as NO.

xAI 0.15

x-ai/grok-4.7

No accepted unconditional ZFC proof of P=NP or of P≠NP is in hand. Clay still lists the problem as open, and recent separation claims are either incomplete or unverified preprints. Absent a proof, failure to find a SAT algorithm does not establish either side.

What would change this view: A community-accepted ZFC proof of worst-case polynomial SAT, or of P≠NP, would move this to YES or NO.

The round note and its sources

Round 5: score 0.09

OpenAI estimated 0.10. The checked sources provide neither an unconditional ZFC proof of equality nor one of inequality; Clay continues to describe the problem as open. My low probability for equality is a tentative mathematical judgment, not… Anthropic estimated 0.01. P vs NP is still open. Clay lists no solution, and a 2026 status page says no accepted proof exists either way. The recent claimed refutation of ETH is a subexponential 3-SAT algorithm, which does not give a… xAI estimated 0.15. No accepted unconditional ZFC proof of P=NP or of P≠NP is in hand. Clay still lists the problem as open, and recent separation claims are either incomplete or unverified preprints. Absent a proof, failure to find a SAT… The three models did not return a unanimous confident binary, so the market is not decided.

Audit bundle

No audit bundle is recorded for this round. A bundle from another round is not substituted for it.

Back to PNP · How the current round reads