Heroes Behind AI
Deep conversations with the founders and experts building AI. What actually works, and what breaks.

About
Angelina Yang
Host of Heroes Behind AI on YouTube. Angelina interviews the technical founders and domain experts building AI — extracting the hard-won lessons behind the companies shaping the future of AI. AI/ML researcher, published author on RAG and machine learning, AI patent holder, and Anthropic Developer Contest winner. Her questions are basic on purpose. The ones a first-time builder or entrepreneur would want to ask but might feel too embarrassed to. That's the point.
Want to ask Angelina a question? Chat with her AI clone on Delphi →
Latest
How One Startup Got 70% of Revenue From Referrals in 6 Months
Jesse Xu (CTO, Podqi) explains why brand protection's tight-knit industry generated 70%+ referral revenue — and the GTM lesson for any startup selling to professional communities.
The Sniff Test for When to Pivot Your AI Startup
Jesse Xu (CTO, Podqi) shares the framework that made his team pivot from patents to trademarks in under 4 months — if you can't validate your own AI's output, you're building in the wrong space.
Brand Protection Is a Revenue Driver, Not a Cost Center
Jesse Xu (CTO, Podqi) breaks down the 95/5 enforcement split — automate 95% of takedowns, investigate 5% for seven-figure legal settlements — and why clearing fakes grows baseline revenue 1-2%.
Why Online Marketplaces Profit From Counterfeit Goods
Jesse Xu (CTO, Podqi) explains the structural conflict of interest that lets fake products thrive on Amazon, Walmart, and Meta — and why platforms have no legal mandate to stop it.
Yutori: Designing AI for Mental Spaciousness, Not Just Productivity
How a Japanese philosophy concept became the product vision for an AI monitoring platform.
Why Domain Expertise Beats Coding in the AI Era
The author of LLM Engineer's Handbook tells engineers to stop specializing in code — and start specializing in a domain.