Anthropic's Levant Alpöge, a former Harvard valedictorian, used Claude's Fable 5 to find something that mathematicians have failed to since 1939.

Mathematicians have been trying to prove the Jacobian conjecture for nearly a century, but now the Claude Fable 5 AI has apparently found a counterexample that disproves it

The Jacobian conjecture has bedeviled math experts for nearly 90 years.