Elon Musk and Sam Altman are back in the spotlight with announcements about their next AI models, days after backing calls to slow down AI. Musk's SpaceXAI is set to complete pre-training and transition into reinforcement learning this week for Grok 4.8, an upgrade boasting 2.5 trillion parameters and promising a serious performance boost. Meanwhile, Altman has hinted that OpenAI's next major release is coming soon, describing it as "big" and on par with expectations for DevDay 2025.