Christophe Gateau/picture alliance via Getty Images Physical Superintelligence Inc. said it used an unreleased Anthropic model to help solve a major open question in quantum computing.

AI just helped work out one of quantum computing's biggest open questions.

Physical Superintelligence Inc., or PSI, said Friday it used an unreleased model from Anthropic to prove the Aaronson-Ambainis conjecture, a long-standing problem in quantum computing.

The physics research lab said the conjecture, which is essentially an educated guess that has not yet been proven, has been open since 2008 and concerns determining when quantum computers can be significantly faster than regular computers.

The lab developed a research system that included the Anthropic model.…