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

This Week In Startups is made possible by:PAYPALToday’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_angelopoulosArena AI: https://arena.ai/Agent Arena: https://arena.ai/leaderboard/agentMunjal Shah on X: https://x.com/munjalshahHippocratic AI: https://hippocraticai.com/Relevant Links:Reuters: “Beijing is looking at curbing overseas access…”: https://www.reuters.com/world/beijing-is-looking-curbing-overseas-access-chinas-top-ai-models-sources-say-2026-07-07/Z.ai: https://z.ai/Alibaba’s Qwen: https://qwen.ai/Google’s Gemma: https://ai.google.dev/gemmaReflection AI: https://reflection.ai/Nvidia: “How Open Models are Driving Research”: https://blogs.nvidia.com/blog/open-models-icml-2026/DoorDash: “How we learned to trust our AI code reviewer”: https://careersatdoordash.com/blog/how-we-learned-to-trust-our-ai-code-reviewer-at-doordashHarvey AI: https://www.harvey.ai/ElevenLabs: https://elevenlabs.io/Anthropic: “A global workspace in language models”: https://www.anthropic.com/research/global-workspaceCNN: “Trump rings opening bell to mark first day of trading for Trump Accounts”: https://www.cnn.com/2026/07/06/business/trump-accounts-launchBrown 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 viable5:01 How deep is the West's open source bench?13:20 Jagged Intelligence and why post-training matters25:22 Benchmarks as living quality checks32:49 Why models still struggle with drug names42:58 Fine-tuning TV, cough, and sob detection46:08 What is Arena actually selling?1:08:29 Nationalization vs. buying stakes in AI companiesSubscribe to the TWiST500 newsletter: https://ticker.thisweekinstartups.comCheck out the TWIST500: https://www.twist500.comSubscribe to This Week in Startups on Apple: https://rb.gy/v19fcpFollow Lon:X: https://x.com/lonsFollow Alex: