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    Home » Inside the little-known expert network quietly training every frontier AI model | Garrett Lord

    Inside the little-known expert network quietly training every frontier AI model | Garrett Lord

    webmasterBy webmasterAugust 24, 2025 All Videos 3 Mins Read
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    Garrett Lord is co-founder and CEO of Handshake, which started as a career network for college students and new grads but recently discovered something extraordinary: they were sitting on the world’s largest network of academic experts—exactly what frontier AI labs desperately needed. With 500,000 PhDs and 3 million advanced degree holders creating training data, in just eight months they’ve built a new business that hit $50 million in revenue in its first four months and is on track to blow past $100M in the first 12 months.

    *What you’ll learn:*
    1. How Handshake found an opportunity to leverage their proprietary network of experts to launch a data-labeling business that’s on track to blow past $100 million ARR in 12 months
    2. Why AI models need human experts (e.g. physics PhDs) to improve, and what this “data labeling” actually involves
    3. Inside the actual work: what a biology PhD does for 8 hours that makes GPT-5 smarter
    4. The playbook for building a startup inside a startup: separate teams, separate offices, separate everything
    5. Why the shift from “generalist” to “expert” data labeling created a once-in-a-lifetime business opportunity
    6. Why AI won’t eliminate entry-level jobs—it’s creating “Iron Man suits” that make junior employees 10x more productive

    *Brought to you by:*
    CodeRabbit—Cut code review time and bugs in half. Instantly: https://coderabbit.link/lenny
    Orkes—The enterprise platform for reliable applications and agentic workflows: https://www.orkes.io/
    Claude.ai—The AI for problem solvers and enterprise: https://www.claude.ai/lenny

    *Transcript:* https://www.lennysnewsletter.com/p/inside-handshake-garrett-lord

    *My biggest takeaways (for paid newsletter subscribers):* https://www.lennysnewsletter.com/i/171410958/my-biggest-takeaways-from-this-conversation

    *Where to find Garrett Lord:*
    • X: https://x.com/garrettlord
    • LinkedIn: https://www.linkedin.com/in/garrettlord/
    • Email: Garrett@joinhandshake.com

    *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) Introduction to Garrett Lord
    (05:00) Understanding data labeling and its importance
    (13:08) The role of experts in AI model training
    (15:35) The future of AI and human collaboration
    (24:17) Why AI won’t eliminate entry-level jobs
    (27:58) The continuous improvement of AI models
    (33:05) The emergence of Handshake’s new business model
    (37:07) Incubating new ideas in established companies
    (40:42) Handshake’s competitive advantage
    (45:43) Scaling up and meeting market demand
    (48:38) Overcoming challenges and adapting
    (53:08) The importance of separate teams and ownership
    (57:26) The future of job matching with AI
    (01:00:30) The biggest bottlenecks to advancing models further
    (01:02:37) Lightning round and final thoughts

    *Referenced:*
    • GPQA: https://github.com/idavidrein/gpqa
    • Handshake: https://joinhandshake.com/
    • OpenAI’s CPO on how AI changes must-have skills, moats, coding, startup playbooks, more | Kevin Weil (CPO at OpenAI, ex-Instagram, Twitter): https://www.lennysnewsletter.com/p/kevin-weil-open-ai
    • Inside Bolt: From near-death to ~$40m ARR in 5 months—one of the fastest-growing products in history | Eric Simons (founder and CEO of StackBlitz): https://www.lennysnewsletter.com/p/inside-bolt-eric-simons
    • Goldman Sachs: https://www.goldmansachs.com/
    • General Motors: https://www.gm.com/
    • Google: https://about.google/
    • Sahil Bhaiwala on LinkedIn: https://www.linkedin.com/in/sahil-bhaiwala-459b0354/
    • Francisco “Paco” Guzman on LinkedIn: https://www.linkedin.com/in/guzmanhe/
    • Avery Yip on LinkedIn: https://www.linkedin.com/in/averyyip/
    • Game of Thrones on HBO: https://www.hbomax.com/shows/game-of-thrones/4f6b4985-2dc9-4ab6-ac79-d60f0860b0ac
    • SNOO: https://www.happiestbaby.com/products/snoo-smart-bassinet
    • Careers at Handshake: https://joinhandshake.com/careers/

    *Recommended books:*
    • Zero to One: Notes on Startups, or How to Build the Future: https://www.amazon.com/Zero-One-Notes-Startups-Future/dp/0804139296
    • The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers―Straight Talk on the Challenges of Entrepreneurship: https://www.amazon.com/Hard-Thing-About-Things-Building/dp/0062273205

    _Production and marketing by https://penname.co/._
    _For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com._

    Lenny may be an investor in the companies discussed.

    webmaster

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