Anthropic’s IPO Math, the NSA’s Mythos Use, and a Better Test for Medical Agents | UpNext AI – June 5, 2026

A quick Friday briefing on the AI stories that mattered most: Anthropic’s eye-popping revenue growth ahead of an IPO, a reported government cyber-use case involving Anthropic’s Mythos model, and a research paper arguing that medical agents need to be tested in step-by-step clinical environments instead of static quizzes.Covered in this episode:- Anthropic says annualized revenue crossed $47 billion in May, up from roughly $9 billion at the end of 2025, as it moves toward an IPO- The Financial Times reports the US National Security Agency is using Anthropic’s Mythos for cyber attacks- A new arXiv paper, ClinEnv, proposes a long-horizon electronic health record environment for evaluating medical agents- OpenAI publishes its public policy agenda focused on safety, youth protection, workforce transition, and global standards- StrictlyVC Los Angeles will spotlight defense tech, AI, and fundraising on June 18 at The Aerospace Corporation Campus- OpenAI also calls for global action on youth AI safety and proposes an international instituteSource links:- Anthropic / TechCrunch: https://techcrunch.com/2026/06/04/ahead-of-its-ipo-anthropics-daniela-amodei-shrugs-off-doubts-about-ais-returns/- FT on NSA and Anthropic Mythos: https://www.ft.com/content/d02d91b3-2636-454e-9442-dc7e69f51815- ClinEnv paper: https://arxiv.org/abs/2606.02568v1- OpenAI public policy agenda: https://openai.com/index/public-policy-agenda- StrictlyVC Los Angeles: https://techcrunch.com/2026/06/04/defense-tech-ai-and-fundraising-take-center-stage-at-strictlyvc-los-angeles-on-june-18/- OpenAI youth safety post: https://openai.com/index/advancing-youth-safety-and-opportunity-through-global-leadership