Elon Musk and Sam Altman have a long-running rivalry. Fabrice COFFRINI/AFP via Getty Images; Andrew Harnik/Getty Images OpenAI's new family of AI models is rolling out more widely after being under restrictions. The company plans to launch the new family of models, which includes Sol, this Thursday. Elon Musk said a new Grok AI model would also launch this week. OpenAI's latest and most powerful AI model is finally getting a public rollout, but not without Elon Musk stealing a bit of thunder.