Elon Musk: Grok 4.3 beta is still a mid-version trained with 0.5T, the 1T flagship is 5 days away from completing initial training.

ME News Report, April 18 (UTC+8), according to Beating Monitoring, Grok 4.3 (beta) has been opened to users subscribed to the highest tier SuperGrok Heavy. On the 17th, users saw the version marked with “Early Access” in the dropdown menu on Grok.com. On the morning of the 18th, X user Mark Kretschmann posted that this version has 1 trillion parameters, twice the size of Grok 4.20, and training time is also significantly longer. xAI and Tesla CEO Elon Musk later corrected this in the same tweet, stating that the current 4.3 (beta) is still a 0.5 trillion parameter model, just an updated training checkpoint, not the 1 trillion new model speculated by the public. Musk also revealed that the real 1 trillion flagship model is about 5 days away from initial training completion. He described the 1T model as making a leap forward in coding, long context handling, and various skills, and said SpaceXAI’s model factory has been operational, with plans to release an improved base model every two weeks. (Source: BlockBeats)