Stop planning for 2027: how OpenAI builds product 90 days at a time | Tara Sesha and Nan Yu (OpenAI)

Lenny's Podcast Lenny's Podcast • Sep 29, 2026

Audio Brief

Show transcript
What if the biggest constraint in artificial intelligence is no longer what the models can do, as OpenAI Codex Product Lead Nan Yu argues, but our own ability to absorb their features? At the Lenny and Friends Summit, moderator Claire Vo speaks with Yu and OpenAI ChatGPT Work Product Lead Tara Seshan about building products as models rapidly evolve. You will learn how to design autonomous agents, plan short roadmaps, and avoid building for today's limitations. Why shipping fast beats waiting for perfection. After seven some odd years at Stripe, where products are deeply polished before launch, Seshan had to shift her mindset to urgent iteration at OpenAI. She shipped an imperfect user interface switch between standard chat and agentic work modes just to get autonomous tools to over a billion ChatGPT users without disrupting workflows. How to solve the human bottleneck in artificial intelligence. As Yu argues, the primary constraint in product development is now capability overhang, meaning models can do much more than people actually use. Yu predicts the rise of self driving products next year that use their own intelligence to solve the empty input box problem and gently guide people. Why you should push rapid updates on big companies. Conventional wisdom says enterprise customers cannot handle rapid change, yet Seshan claims withholding frontier updates causes companies to get leapfrogged. Seeing that most enterprise clients only used basic chat, OpenAI intentionally shipped a disruptive update toward autonomous agents that broke standard update processes so customers could unlock new value instead of looking at alternatives. How to design agents around human limits. While Vo keeps a single Codex agent docked on her computer all day rather than using forty Grok bots across a business, Yu explains why that fits human nature. Managing forty agents is like managing forty direct employees, which almost no one except perhaps Jensen Huang wants to do, so users claiming to manage seven agents usually cheat by creating one Chief of Staff agent to manage the other six. How to guarantee your artificial intelligence finishes the job. When an artificial intelligence product gets ninety nine percent of a job done and fails on the last mile, Yu says it feels worse to a user than not starting at all. Seshan explains that ChatGPT uses plugins and software hooks as a first layer, while computer use, where the model operates the screen directly, acts as a fallback to guarantee one hundred percent completion. Why multi year artificial intelligence predictions fail. Seshan argues that multi year predictions in frontier artificial intelligence are almost always wrong, and she keeps a personal document of her own incorrect predictions as a reminder. Unlike payments at Stripe, where business cases can be modeled many months out, OpenAI's trajectory cannot be predicted the same way, though she hedges that perhaps OpenAI Chief Financial Officer Sarah Friar is the expert who can do so. What comes after the open laptop. Looking ahead to 2027, Seshan is very bullish on voice tools like GPT Live, which reduced the tech support she does for her family and transformed how she onboarded OpenAI's internal People team. To build for this rapid future, Seshan advises reading raw session logs, writing evals, staying accessible to users to feed specific use cases to research while Yu notes this helps diagnose subtle bugs, and aiming roadmaps at where models will be in two to three months so you get out of the model's way.

Episode Overview

  • Moderator Claire Vo speaks with Tara Seshan and Nan Yu about how product leaders build, ship, and iterate on AI products and agentic experiences when underlying models are evolving rapidly.
  • The conversation explores the transition from deeply polished traditional software launches to urgent, iterative AI releases, highlighting how user comprehension has replaced model capability as the primary bottleneck.
  • The speakers break down practical frameworks for designing single versus multi-agent architectures, overcoming the "last mile" problem in software integrations, and collaborating directly with AI research teams.
  • Product managers, builders, and enterprise leaders will learn how to adapt their planning horizons, onboarding flows, and feedback loops to match the pace of frontier AI.

Key Concepts

  • Urgency Over Polish in AI Releases: At the Stripe-sponsored Lenny & Friends Summit, OpenAI ChatGPT Work Product Lead Tara Seshan contrasts her 7 some odd years at Stripe, where products are deeply polished before launch, with the urgency required at OpenAI. She explains that shipping an imperfect UI toggle between standard chat and agentic work modes was necessary to get an agentic harness to "over a billion users that use ChatGPT" without disrupting developer workflows. OpenAI Codex Product Lead Nan Yu adds that the obvious next step is "no toggle," noting users accept product churn if guided with transparency and a coherent story.
  • Capability Overhang and Absorption Limits: Nan Yu argues that the primary constraint in AI product development is no longer what the models can do, a phenomenon known as capability overhang, but rather users' ability to understand and absorb new features. Consequently, onboarding has become more critical than ever, and he predicts the rise of "self-driving" products next year that use their own intelligence to solve the "empty input box problem" and gently guide users.
  • Pushing Enterprise Adoption: Conventional wisdom dictates that enterprise customers cannot handle rapid change. However, Tara Seshan claims that withholding frontier updates causes companies to get leapfrogged. Because most of OpenAI's enterprise customers were only using basic chat, OpenAI intentionally shipped a disruptive evolution toward agents that broke standard enterprise update processes so customers could unlock new value rather than look at alternative products.
  • Human-Centric Agent Architecture: Moderator Claire Vo, who builds businesses relying on OpenAI tools and keeps a single Codex agent docked on her computer all day, contrasts her setup with having "40 Grok bots" across a business. Nan Yu explains that agent design must map onto human evolution; managing 40 agents is like managing 40 direct employees, which almost no one (except perhaps Jensen Huang) wants to do. He notes that users who claim to manage 7 agents usually "cheat" by creating 1 "Chief of Staff" agent to manage the other 6. Tara Seshan adds that choosing between single and multi-agent identities comes down to tactical product details: data access, user versus service account permissions, and whether an agent in a private Slack channel has "severed" or segmented memory.
  • Solving the "Last Mile" with Computer Use: Tara Seshan describes ChatGPT as a layered platform where first-party or third-party plugins and hooks form the first layer, and computer use acts as a fallback layer. Nan Yu explains why this fallback matters: when an AI product gets 99% of a job done and "barfs" on the last mile, it feels worse to a user than a total non-starter. Even though computer use is slow and costs many tokens, it guarantees 100% completion while waiting for the broader ecosystem of MCPs and hooks to catch up.
  • Shortened Planning Horizons in Frontier AI: Unlike established markets such as payments at Stripe where bull, bear, and base cases can be modeled many months out, Tara Seshan notes that OpenAI's business trajectory cannot be predicted the same way (though she hedges that perhaps OpenAI CFO Sarah Friar is the expert who can do so). Seshan argues that multi-year AI predictions are "almost always wrong" and notes she keeps a personal document of her own incorrect predictions as a reminder.
  • Future Form Factors: Looking ahead to 2027, Tara Seshan is "so bullish on voice" (referencing GPT Live), noting it reduced the tech support she does for her family and transformed how she onboarded OpenAI's internal People team. Meanwhile, Claire Vo predicts new hardware form factors, such as a "baby bot" or "Codex in a box," that replace carrying around an open laptop.

Quotes

  • At 1:26 - "And also, there's a lot of like theorizing that one can do before you ship something, but nothing compares to like the actual empirical evidence of seeing users try it, use it, and then iterating from there. So I've really had to shift my mindset from how do you get it perfect a priori versus how do you ship something and iterate on it as quickly and effectively as possible." - Tara Seshan explaining why empirical user feedback in frontier AI outweighs pre-launch perfection.
  • At 5:15 - "The biggest constraint is honestly like people's understanding and ability to sort of absorb what you're what you're giving them, right? We talk a lot about like capability overhang, about like the models can do so much and just like, you know, people aren't necessarily taking advantage of all those abilities. I think that's where that's where the gap is, right?" - Nan Yu identifying user comprehension as the primary bottleneck in AI adoption.
  • At 15:50 - "There is a huge difference between getting like all of a job done versus getting everything except for the last mile. And the last mile honestly feels sometimes worse than just like, oh, it's a non-starter. If it's a non-starter, you can just like, look, I'm just going to do it myself or I'll try another route or whatever it is. But if it gets like 99% there and then it just like barfs, then you're like, well, this is actually a worse sort of like unfulfilled promise." - Nan Yu illustrating why reliable fallback mechanisms like computer use are essential for user trust.
  • At 18:21 - "In as much as like I can add something to working with research, it is for me to come with very, very specific use cases, a really clear idea of what like users want to do and their goals, to have done like sample reading, so understand like literally what was the like session and what did it look like and why did the model not do what it needed to do. If I can write evals, that is like I'm there, like learning how to write good evals and writing evals as much as possible is like the most important thing." - Tara Seshan detailing how product managers practically contribute to AI research teams.

Takeaways

  • Anchor product roadmaps to a 60-to-90-day horizon: Evaluate new features using three checks: ensure they unlock genuinely additive value, pass a qualitative internal dogfooding bar for retention and delight (which Seshan notes is not a specific number or exact metric), and aim at where models will be in 2 to 3 months so you are "sufficiently AGI-pilled" and getting out of the model's way without building for today's limitations.
  • Contribute to AI research via sample reading and evals: While hedging that she is not an expert on collaborating with researchers and offering a "novice's view," Tara Seshan advises product managers to bring specific user goals to research teams, read raw session logs ("sample reading") to diagnose exact model failures, write evaluations (evals), and prove out outcomes with prompts and skills first so post-training teams can bake those capabilities directly into the model.
  • Be a "DM-able PM" and clarify product norms: Maintain direct, accessible relationships with end users, even on massive consumer products, because subtle natural language bugs (like an agent "giving attitude") require 2 or 3 follow-up questions to diagnose; additionally, design clear data privacy and product norms so users can accurately predict what semi-autonomous agents will do at any given point.