Anthropic’s first technical PM on token maxing, the jagged edge, and living in the future | Dianne Penn

Dianne Penn is Head of Product for Anthropic’s AI Research and Labs teams. She joined in 2023 as Anthropic’s first technical product manager, when the entire product team was five engineers, and has since helped ship every model from Claude 2 through Fable, and helped incubate Claude Code, MCP, Skills, computer use, tool use, and reasoning. Before Anthropic, she helped build Alexa’s AI at Amazon and, before that, traded high-yield bonds at JP Morgan Chase.

In our in-depth conversation, we discuss:

1. What Anthropic’s early days were like

2. The inflection points that turned Anthropic from an underdog into the fastest-growing company in history

3. How exactly Claude got so good at coding

4. The eval-driven development loop her team is pioneering

5. How to find joy in AI when everything is moving this fast

6. Why Claude’s willingness to push back is key to its success

7. Where human judgment remains irreplaceable

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Episode transcript: https://www.lennysnewsletter.com/p/anthropics-first-technical-pm-on

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Archive of all Lenny's Podcast transcripts: https://www.dropbox.com/scl/fo/yxi4s2w998p1gvtpu4193/AMdNPR8AOw0lMklwtnC0TrQ?rlkey=j06x0nipoti519e0xgm23zsn9&st=ahz0fj11&dl=0

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Where to find Dianne Penn:

• LinkedIn: linkedin.com/in/dianne-na-penn

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Where to find Lenny:

• Newsletter: https://www.lennysnewsletter.com

• X: https://twitter.com/lennysan

• LinkedIn: https://www.linkedin.com/in/lennyrachitsky/

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In this episode, we cover:

(00:00) Introduction

(02:31) Early Anthropic days

(08:55) Big milestones

(13:50) Inside the exponential

(20:02) Token maxing

(23:30) Anthropic Labs and the incubation model

(27:30) How the research role works

(31:35) How to become a top researcher

(35:18) Frontier model safeguards

(39:38) Hiring in the AI era

(44:16) Building an eval set

(47:48) Evals vs PRDs

(49:55) The importance of hands-on leadership

(52:46) Finding joy in AI

(58:10) How Dianne uses Claude

(01:01:05) Avoiding overreliance on AI

(01:03:50) The constitution that makes Claude better

(01:07:11) AI writing and verification

(01:11:40) Where human brains will continue to be valuable

(01:14:10) Navigating AI with kids

(01:16:26) Alignment, the future of the PM role, and burnout

(01:21:54) Lightning round and final thoughts

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Referenced:

• Anthropic: https://www.anthropic.com

• Golden Gate Claude: https://www.anthropic.com/news/golden-gate-claude

• Dario Amodei’s website: https://darioamodei.com

• Scaling Laws and Interpretability of Learning from Repeated Data: https://www.anthropic.com/research/scaling-laws-and-interpretability-of-learning-from-repeated-data

• Tokenmaxxing: How Top Builders Use AI To Do The Work Of 400 Engineers: https://www.ycombinator.com/library/Pa-tokenmaxxing-how-top-builders-use-ai-to-do-the-work-of-400-engineers

• Garry Tan on X: https://x.com/garrytan

• Anthropic co-foun…