The Joe Reis Show

"I Needed to Be Back in the Game": Leaving PE & Big Tech to Build Vertical AI w/ Lak Lakshmanan

13 snips
Jan 28, 2026
Lak Lakshmanan, AI technologist and former Google and private equity professional turned founder, talks about building vertical AI. He explores agentic systems, how tools and loops make LLMs adaptive, and why narrow, domain-focused AI can deliver real ROI. He also explains leaving big firms to rebuild product craft and what’s next for dynamic prompting and seamless agent experiences.
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INSIGHT

Pretraining Was The Fundamental Unlock

  • Pre-training plus few-shot prompting turned LLMs from narrow models into general-purpose engines.
  • That change enabled many tasks (e.g., image classification, text generation) with far less labeled data.
INSIGHT

Product UX Drove ChatGPT's Explosion

  • ChatGPT was a product unlock, not just a technical one, because it hid complexity behind a conversational UI.
  • The interface made the model broadly useful and drove massive, rapid adoption.
ANECDOTE

From Skeptic To Founder

  • Lak went from skeptical researcher at Google to quitting PE to found an agentic startup.
  • He felt he had to 'get back in the game' as the rules changed rapidly.
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