Mathematicians are responding to new results achieved by an AI system that solves another long-standing, century-old math problem. Reporting from multiple outlets describes the effort as a “very rapid and very unsettling change,” reflecting how quickly AI tools can produce breakthroughs compared with traditional timelines. The work is attributed to Levant Alpöge, a former Harvard valedictorian associated with Anthropic, who is reported to have used Claude—specifically “Fable 5”—to obtain the solution to a problem that had resisted human approaches for decades. The story places the breakthrough in a broader context of ongoing AI progress in mathematics, where systems increasingly demonstrate the ability to tackle tasks that previously required specialized and time-intensive research. While the sources focus on the speed and impact of the AI result, they do not present a single unified explanation of how the system arrives at the solution or how the mathematical community will assess the method’s long-term significance. Overall, the coverage emphasizes that AI is accelerating progress in areas where human researchers have historically struggled, raising questions about how mathematicians will adapt their workflows.