Introducing Claude Fable 5: a Mythos-class model that weโve made safe for general use.
Its capabilities exceed those of any model weโve ever made generally available.
GPT-5.2 derived a new result in theoretical physics.
Weโre releasing the result in a preprint with researchers from @the_IAS, @VanderbiltU, @Cambridge_Uni, and @Harvard. It shows that a gluon interaction many physicists expected would not occur can arise under specific conditions.
https://t.co/EAZhKWacsG
Introducing Claude Opus 4.7, our most capable Opus model yet.
It handles long-running tasks with more rigor, follows instructions more precisely, and verifies its own outputs before reporting back.
You can hand off your hardest work with less supervision.