How OpenAI Built Its Coding Agent

Can we make science as fast as software? In this episode, Erik Torenberg talks with Patrick Hsu (cofounder of Arc Institute) and a16z general partner Jorge Conde about Arc’s “virtual cells” moonshot, which uses foundation models to simulate biology and guide experiments.

In this conversation from Lenny’s Podcast, Ben Horowitz joins Lenny to discuss the psychological muscle every founder needs, why hesitation can be fatal for CEOs, when it’s time to replace a founder, and how to normalize failure while building confidence. They also explore the Databricks founding story, investing in Adam Neumann after WeWork, whether AI is in a bubble, where the real opportunities lie, and Ben’s work with the Paid in Full Foundation supporting hip-hop pioneers. The result is a candid look at leadership, product management, and what it takes to build enduring companies.

The $13T U.S. mortgage market serves 50M homeowners but still runs on decades-old software. In this episode, a16z GP Angela Strange hosts Tim Mayopoulos (ex-CEO of Fannie Mae and ex-president of Blend), Mike Yu (co-founder and CEO of Vesta), and Andrew Wang (co-founder and CEO of Valon) to unpack why standardization and regulation slow change, and how modern loan-origination and servicing platforms, cleaner data, and AI can cut costs, boost transparency, and reduce errors. They also discuss policy levers that could speed innovation and what a true one-tap mortgage could look like.

Why do some consumer products explode into networks that reshape the internet, while others fade away? Today on the podcast, a16z general partners Anish Acharya and Chris Dixon take on that question. Anish invests in AI-native consumer products and the next wave of consumer tech. Chris is best known for his work in Web3 and network economies, and he’s also led some of a16z’s biggest consumer bets. Together, they cover the history and power of consumer networks, the exponential forces that shape how they grow, and what it all means for founders building in the age of AI.

What happens when AI collides with salesmanship, streaming-era sports, and healthcare? In this episode, Erik Torenberg is joined by Mark Cuban, entrepreneur, Dallas Mavericks co-owner, and founder of Cost Plus Drugs. Topics include fiery group chats and how dissent sharpens thinking, the sales playbook of modern politics, and concrete fixes for U.S. healthcare like ending PBM opacity, publishing real prices, and government-backed patient financing. Mark also explains how AI is pushing media from “social” to algorithmic, why he expects millions of models, and why ESOPs are an underrated wealth engine. He shares what he’d build today and weighs in on NBA economics under the new collective bargaining agreement.