29 Aug 2025
1h 19m

How OpenAI Built Its Coding Agent

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AI + a16z

In this episode of the AI plus a16z podcast, Anjney Midha interviews Alexander Embiricos, product lead for Codex at OpenAI, about the origin, development, and future of Codex, OpenAI's coding agent. They discuss how Codex evolved from a code completion model to a cloud-based agent capable of writing and merging PRs, emphasizing the importance of safety and security in its deployment. They explore the trade-offs between automation and human oversight, the challenges of prompt injection attacks, and the evolving workflows of software engineers using AI tools. The conversation covers the shift from interactive coding to AI-driven code generation, the potential for AI to handle routine tasks, and the implications for computer science education and the future of software engineering careers.

Outlines

Part 1: Introduction to Codex

Part 2: Agent Development & Software Engineering

Part 3: Adoption & Advice

Part 4: Disclaimer

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