A16z Podcast

OpenAI’s Codex has already shipped hundreds of thousands of pull requests in its first month. But what is it really, and how will coding agents change the future of software?In this episode, General Partner Anjney Midha goes behind the scenes with one of Codex’s product leads- Alexander Embiricos - to unpack its origin story, why its PR success rate is so high, the safety challenges of autonomous agents, and what this all means for developers, students, and the future of coding. Timecodes:0:00 Intro: The Vision for AI Agents1:25 Codex’s Origin and Naming3:20 Early Prototypes and Agent Form Factors6:00 Cloud Agents: Safety and Security9:40 Prompt Injection and Attack Vectors12:00 PR Merging: Metrics and Transparency17:00 The Future of Code Review and Automation20:00 User Adoption: Internal vs. External Surprises22:00 Multi-Turn Interactions and Product Learnings29:30 Best-of-N, Slot Machine Analogy, and Creativity33:00 Human Taste, Iteration, and Collaboration40:00 AI’s Impact on Software Engineering Careers45