From Vibe Coding to Vibe Researching: OpenAI’s Mark Chen and Jakub Pachocki

What comes after vibe coding? Maybe vibe researching.OpenAI’s Chief Scientist, Jakub Pachocki, and Chief Research Officer, Mark Chen, join a16z general partners Anjney Midha and Sarah Wang to go deep on GPT-5—how they fused fast replies with long-horizon reasoning, how they measure progress once benchmarks saturate, and why reinforcement learning keeps surprising skeptics.They explore agentic systems (and their stability tradeoffs), coding models that change how software gets made, and the bigger bet: an automated researcher that can generate new ideas with real economic impact. Plus: how they prioritize compute, hire “cave-dweller” talent, protect fundamental research inside a product company, and keep pace without chasing every shiny demo. Timecodes: 0:00  Introduction & Goals of Automated Researcher0:43  The Evolution of Reasoning in AI1:46  Evaluations: From Benchmarks to Real-World Impact5:15  Surprising Capabilities of GPT-56:56  The Research Roadmap: Next 1, 2, 5 Years7:46  Long-Horizon Agency & Model Memory9:44  Reasoning in Open-Ended Domains11:18  The Role and Progress of Reinforcement Learning13:14  Reward Modeling & Best Practices14:21  The New Codex: Real-World Coding16:20  AI vs. Human Coding: The New Default20:07  What Makes a Great Researcher?21:14  Persistence, Conviction, and Problem Selection26:00  Building and Sustaining a Winning Research Culture31:45  Balancing Product and Fundamental Research39:00  The Importance of Compute and Physical Constraints45:50  Maintaining Speed and Learning at Scale47:18  Trust and Collaboration at OpenAI Resources: Find Jakub on X: https://x.com/merettmFind Mark on X: https://x.com/markchen90Find Sarah on X: https://x.com/sarahdingwangFind Anjney on X: https://x.com/AnjneyMidha Stay Updated: If you enjoyed this episode, be sure to like, subscribe, and share with your friends!Find a16z on X: https://x.com/a16zFind a16z on LinkedIn: https://www.linkedin.com/company/a16zListen to the a16z Podcast on Spotify: https://open.spotify.com/show/5bC65RDvs3oxnLyqqvkUYXListen to the a16z Podcast on Apple Podcasts: https://podcasts.apple.com/us/podcast/a16z-podcast/id842818711Follow our host: https://x.com/eriktorenbergPlease note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures. Stay Updated:Find a16z on YouTube: YouTubeFind a16z on XFind a16z on LinkedInListen to the a16z Show on SpotifyListen to the a16z Show on Apple PodcastsFollow our host: https://twitter.com/eriktorenberg Please note that the content here is for informational purposes only; should NOT be taken as legal, business, tax, or investment advice or be used to evaluate any investment or security; and is not directed at any investors or potential investors in any a16z fund. a16z and its affiliates may maintain investments in the companies discussed. For more details please see a16z.com/disclosures. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.