Elon Musk announced that xAI's 2T parameter model, an improvement over 1.5T Grok 4.5, will complete initial training next week. "It might be able to exceed Kimi, but with speed and token efficiency close to our 1.5T," Musk added. Chinese AI startup Moonshot unveiled Kimi K3 last week, which it claims to be the world's largest open-weight AI model.