Podcast Guide
Video thumbnail for Extreme Harness Engineering for Token Billionaires: 1M LOC, 1B toks/day, 0% human code, 0% human review — Ryan Lopopolo, OpenAI Frontier & Symphony — Latent Space: The AI Engineer Podcast

Extreme Harness Engineering for Token Billionaires: 1M LOC, 1B toks/day, 0% human code, 0% human review — Ryan Lopopolo, OpenAI Frontier & Symphony

Latent Space: The AI Engineer Podcast

Published
April 7, 2026
Duration
1h 17m
Summary source
youtube captions
Last updated
Apr 21, 2026

I do think that there is an interesting space to explore here with codeex the harness as part of building AI products right there's a ton of momentum around getting the models to be good at coding …

Summary

I do think that there is an interesting space to explore here with codeex the harness as part of building AI products right there's a ton of momentum around getting the models to be good at coding we've seen big leaps in like the task complexity with each incremental model release where if you can figure out how to collapse a product that you're trying to build a user journey that you're trying to solve into code it's pretty natural to use the codeex harness to solve solve…

Show notes

We’re proud to release this ahead of Ryan’s keynote at AIE Europe. Hit the bell, get notified when it is live! Attendees: come prepped for Ryan’s AMA with Vibhu after.Move over, context engineering. Now it’s time for Harness engineering and the age of the token billionaires.Ryan Lopopolo of OpenAI is leading that charge, recently publishing a lengthy essay on Harness Eng that has become the talk of the town:In it, Ryan peeled back the curtains on how the recently announced OpenAI Frontier team h

Themes

  • openai
  • It's done all the wiring and lets you just communicate in prompts to let the model cook
  • You kind of have to step back, right
  • Like you need to take a systems thinking mindset to things and constantly be asking where is the agent making mistakes