Elon Musk told Tesla staff to move to Grok 4.5, an AI model he admits is worse than rivals and ranks below OpenAI, Anthropic, and Google on benchmarks.

Elon Musk said the latest version of Grok is “faster, more token-efficient and lower cost” than one of Anthropic’s models.

OpenAI's new family of frontier models is no longer restricted and set to roll out more widely on Thursday. Enter, Elon Musk.