Fields Medalist Timothy Gowers had ChatGPT 5.5 Pro tackle open problems in number theory. The model improved an exponential bound to a polynomial one in under an hour. An MIT researcher involved calls the key idea "completely original." Gowers' takeaway: the bar for mathematical contributions is now proving something LLMs can't. The article Fields Medalist says ChatGPT 5.5 Pro delivered "PhD-level" math research in under two hours with zero human help appeared first on The Decoder.