OpenAI CEO Sam Altman testifies before Senate on AI regulation.

OpenAI CEO Sam Altman testified before a Senate Judiciary subcommittee, urging lawmakers to regulate AI and describing the technology's current boom as a potential "printing press moment" but one that required safeguards. Altman suggested creating a licensing regime for companies working on the most powerful AI systems, which could be applied to the "development and release of AI models above a threshold of capabilities." Other tech leaders have called for caution and increased rigor for safety issues in AI development.