Elon Musk testifies that xAI trained Grok on OpenAI models

Elon Musk said in court that xAI partly used OpenAI model distillation techniques to help train Grok.

The admission came during a California federal trial tied to Musk’s lawsuit against OpenAI.

The case highlights growing legal and competitive tensions over how AI labs use one another’s models and data.

The report also says Musk ranked xAI behind several larger AI rivals in the race to build top AI systems.