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Why PMs are suddenly valuable again | Tulsee Doshi (Head of Product, Gemini)

Lenny's Podcast

58m
Transcript

Original podcast

Summary

Written by a model from the transcript; not yet reviewed.

This episode features a detailed conversation about frontier AI model development, product management, and the unique challenges of building advanced generative systems at Google. The discussion explores how models are grown rather than built, the unpredictability of training, and the practical application of evaluation frameworks and model vibes. Additionally, the conversation covers safety and monitoring strategies, the evolution of the product manager role in an era of rapid AI capability expansion, and concrete frameworks for building features ahead of current model limitations.

  • Build product features using a 60-20-20 rule to balance what works today with experimental capabilities that rely on future model improvements. 0:39
  • Start evaluation processes with a small set of prompts and manual grading to develop clear rubrics before scaling up benchmarks. 23:31
  • Test models on tasks you genuinely care about to observe their unique capabilities and areas where they show signs of life. 25:16
  • Separate AI-generated content from human insight when managing team documentation to ensure AI handles data retrieval while humans provide analysis. 48:15

Highlights

  • 0:00

    Model Development as Potions Classinsight

    Building and training large language models involves careful preparation of inputs, but the output always contains a degree of surprising, unpredictable magic.

  • 16:12

    Matching UX Complexity to Usersstrategy

    Mass-market products require accessible user experiences, while power-user developer tools can support advanced interfaces like terminal and IDE integrations.

  • 19:24

    The Ascendance of Product Managementinsight

    As building software becomes trivial with AI, the role of product management gains value by bringing taste, signal extraction, and structural clarity to chaos.

  • 27:46

    Redesigning Skin Tone Evaluationsstory

    Google replaced the six-tone Fitzpatrick medical scale with a 10-tone anthropological scale from Professor Monk to improve product equity and image generation accuracy.

  • 33:50

    The 60-20-20 Building Frameworkstrategy

    Product teams should build prototypes where 60 percent works today, 20 percent works partially, and the remaining 20 percent anticipates future model capabilities.

About this episode

Tulsee Doshi is head of product for Google’s frontier AI models, including Gemini and other multimodal models, such as Nano Banana, Genie, Veo, and Lyria. We discuss: 1. Why model development is not just engineering, but also like Snape’s potions class 2. Google’s full-stack frontier AI strategy 3. What PMs do inside a frontier AI lab 4. Tulsee’s 60-20-20 framework for balancing what works now and what’s almost working 5. How to write your first eval 6. The rising value of great PMs — Brought to you by: WorkOS https://workos.com/lenny—Make your app enterprise-ready, with SSO, SCIM, RBAC, and more DX https://getdx.com/?utm_source=lenny&utm_medium=sponsorship&utm_campaign=q42026—Engineering intelligence for the AI era — Episode transcript: https://www.lennysnewsletter.com/p/what-it-actually-takes-to-build-frontier — Archive of all Lenny's Podcast transcripts: https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0 https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0 — Highlights: https://lennyspodcast.com/mostreplayedmoments — Where to find Tulsee Doshi: • X: https://x.com/tulseedoshi • LinkedIn: linkedin.com/in/tulsee-doshi http://linkedin.com/in/tulsee-doshi — Where to find Lenny: • Newsletter: https://www.lennysnewsletter.com • X: https://twitter.com/lennysan • LinkedIn: https://www.linkedin.com/in/lennyrachitsky/ — In this episode, we cover: (00:00) Teaser (01:08) What people misunderstand about how models are built (06:28) Google’s strategy in the AI race (09:57) AI safety, monitoring, and strengthening cyberdefenses (14:10) Balancing fast launches with great user experiences (17:02) Why the model itself has a UX (19:21) Why product managers are becoming more valuable (21:24) The skills that matter for research PMs (23:04) How to build your first eval (24:37) Getting better at judging a model’s vibes (26:15) Improving skin tone representation with better evals (28:25) Evaluating the full experience, not just the model (30:38) From crowdsourced flash teams to agent swarms (33:13) The 60-20-20 rule for building ahead of model capabilities (35:46) Keeping your product adaptable as models improve (36:42) What an AI harness actually is (37:30) Upskilling PMs through shared skills and workshops (41:18) Building the habit of asking, “Can AI do this for me?” (42:38) Google’s opportunity to build a personal AI assistant (44:10) Burnout, meaningful work, and the pressure to do more (47:44) Avoiding AI slop (49:30) How AI is changing the PM role (51:02) Lightning round and final thoughts — References: https://www.lennysnewsletter.com/p/what-it-actually-takes-to-build-frontier — Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email [email protected] mailto:[email protected]. — Lenny may be an investor in the companies discussed. To hear more, visit www.lennysnewsletter.com https://www.lennysnewsletter.com?utm_medium=podcast&utm_campaign=show-notes-no-free-preview-language

Transcript

0:00
58:33

11,800 words · 2 speakers

Topics

  • Artificial Intelligence
  • Product Management
  • Model Evaluation
  • AI Safety
  • Google Gemini
  • UX Design
  • Engineering Leadership

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