Elon Musk says Grok 4.5 is moving into private testing. Two reports state that Musk announced the model’s entry into a restricted testing phase at both SpaceX and Tesla, describing it as a “private testing” or “private beta” rollout. The announcements indicate the model is not yet broadly available to the public and is instead being evaluated within the companies as part of an internal release process. The sources do not provide additional technical details about Grok 4.5’s capabilities, performance, or specific use cases during the testing period. They also do not include information on timelines for expansion beyond private trials or on how results will be assessed before any wider release. Overall, the coverage focuses on Musk’s statement about where the model will first be tested and the nature of the initial rollout as limited access testing at SpaceX and Tesla.