What happens if China pulls the plug on open-source AI? | Ep 21

This Week In Startups is made possible by: PAYPAL Today’s show: China is weighing a ban on foreign access to its top AI models… the same low-cost open-weight systems on which half of the Valley’s startups are building. So we asked our two all-star panelists — Arena CEO/Co-Founder Anastasios Angelopoulos and Hippocratic AI CEO/Co-Founder Munjal Shah — what happens to US companies when their favorite cheap, powerful models vaporize overnight. PLUS why Hippocratic runs 31 models in parallel to ensure clinical-grade safety, the latency-vs-intelligence tradeoff no one is optimizing for, and why a company’s benchmarks might become their most valuable IP. Guests: Anastasios Angelopoulos on X: https://x.com/ml_angelopoulos Arena AI: https://arena.ai/ Agent Arena: https://arena.ai/leaderboard/agent Munjal Shah on X: https://x.com/munjalshah Hippocratic AI: https://hippocraticai.com/ Relevant Links: Reuters: “Beijing is looking at curbing overseas access…”: https://www.reuters.com/world/beijing... Z.ai: https://z.ai/ Alibaba’s Qwen: https://qwen.ai/ Google’s Gemma: https://ai.google.dev/gemma Reflection AI: https://reflection.ai/ Nvidia: “How Open Models are Driving Research”: https://blogs.nvidia.com/blog/open-mo... DoorDash: “How we learned to trust our AI code reviewer”: https://careersatdoordash.com/blog/ho... Harvey AI: https://www.harvey.ai/ ElevenLabs: https://elevenlabs.io/ Anthropic: “A global workspace in language models”: https://www.anthropic.com/research/gl... CNN: “Trump rings opening bell to mark first day of trading for Trump Accounts”: https://www.cnn.com/2026/07/06/busine... Brown University Health: https://www.brownhealth.org/ Timestamps: 0:00 Will US companies lose access to Chinese models? 1:42 Open source makes running 31 models viable 5:01 How deep is the West's open source bench? 13:20 Jagged Intelligence and why post-training matters 25:22 Benchmarks as living quality checks 32:49 Why models still struggle with drug names 42:58 Fine-tuning TV, cough, and sob detection 46:08 What is Arena actually selling? 1:08:29 Nationalization vs. buying stakes in AI companies Subscribe to the TWiST500 newsletter: https://ticker.thisweekinstartups.com Check out the TWIST500: https://www.twist500.com Subscribe to This Week in Startups on Apple: https://rb.gy/v19fcp Follow Lon: X: https://x.com/lons Follow Alex: X: https://x.com/alex LinkedIn: ⁠  / alexwilhelm   Follow Jason: X:   / jason   LinkedIn:   / jasoncalacanis   Check out all our partner offers: https://partners.launch.co/ Great TWIST interviews: Will Guidara, Eoghan McCabe, Steve Huffman, Brian Chesky, Bob Moesta, Aaron Levie, Sophia Amoruso, Reid Hoffman, Frank Slootman, Billy McFarland Check out Jason’s suite of newsletters: https://substack.com/@calacanis Follow TWiST: Twitter:   / twistartups   YouTube:    / thisweekin   Instagram:   / thisweekinstartups   TikTok:   / thisweekinstartups   Substack: https://twistartups.substack.com