Elon Musk on Thursday admitted he was wrong about Anthropic, calling them the obvious leader in AI. In a post on X, Musk stated, "I was clearly wrong about Anthropic. They are obviously currently the leader in AI. No company has released a model as good as Mythos/Fable and they will undoubtedly have Mythos 2 ready soon." This marked a reversal from his previous public criticisms, including labeling the company "misanthropic and evil" and accusing it of "stealing training data at massive scale." The exchange occurred after a user named kache on X claimed Anthropic is "completely reliant on the compute rented from SpaceXAI" under a "short term, 6 months from May without renewal promise." Musk responded, "I would never cut them (Anthropic) off in a way that hurt them badly, even as a competitor." He highlighted his ethics, noting, "Tesla open sourced its patents and we made the Supercharger network available to all competitors." Earlier this year, Anthropic struck a major deal to lease AI computing capacity from SpaceXAI's data centres. SpaceXAI, formerly known as xAI, unveiled its latest model, Grok 4.5 on Thursday.