Person

Hamel Husain

I am a machine learning engineer with over 20 years of experience. More about me @ https://hamel.dev

Where to Find Them

Hamel Husain writes Vanishing Gradients , writes Product Growth , writes Engineering Leadership , writes The Growth Podcast , writes Decoding AI Magazine , writes ThursdAI - The top AI news from the past week , writes The Pragmatic Engineer and writes The Product Compass . They have also been a guest on The TWIML AI Podcast (2 times) , Product Talk , Gradient Dissent: Conversations on AI , How I AI and Lenny's Podcast: Product | Career | Growth . They also write for Hamel’s Substack on Substack.

Recently: “The Rise of the AI Scientist” on Vanishing Gradients (September 2026); “The Rise of the AI Scientist” on Vanishing Gradients (September 2026); “How Evals Are Central To Harness Engineering” on Vanishing Gradients (September 2026); “How to Do AI Evals Step-by-Step with Real Production Data | Tutorial by Hamel Husain and Shreya Shankar” on The Growth Podcast (January 2026); “How to Do AI Evals Step-by-Step with Real Production Data | Tutorial by Hamel Husain and Shreya Shankar” on Product Growth (January 2026); “A pragmatic guide to LLM evals for devs” on The Pragmatic Engineer (December 2025).

What They Said

“And I have seen this product being built at companies more than any other product. Like everyone is building this. It is some kind of agent, internal agent that will answer business questions. But this is actually really bad. Do not make something like this.” — Hamel Husain, Vanishing Gradients

This is the clip Vanishing Gradients opens the episode on, and host Hugo Bowne-Anderson picks it straight up to ask why the design is bad. Husain's answer in the next turn is short: you cannot tell whether the agent's answer is right. He is describing the internal AI product he sees companies building more than any other.

Vanishing Gradients · 2026-09-04 Permalink → Listen →
Vanishing Gradients Around 00:00 into the episode
Hamel Husain

And I have seen this product being built at companies more than any other product. Like everyone is building this. It is some kind of agent, internal agent that will answer business questions. But this is actually really bad. Do not make something like this.

Hugo Bowne-Anderson

Yo, so that was Hamil Hussein, ML engineer, longtime friend of the Vanishing Gradients podcast, and one of the most interesting, dare I say, AI scientists in the space. Why is the data agent everyone is building such a bad design?

Hamel Husain

You don't really know if it's right. How do you know?

Hugo Bowne-Anderson

Data science is back, baby. Every agent produces noisy outputs, tangled tool calls, strange human behavior, and thousands of possible paths through a system. Hamill and I trace what that means from the data agent everyone's building to a possible emerging new role, that of the AI scientist. We also explore agents helping to evaluate other agents, learning from human annotations and servicing failures that teach the reviewer something new. Along the way, we get into product design, verification, search, human judgment, and why the proof behind an AI-generated answer may be more valuable than the answer itself. Hamil and Shreyashanka's AI evals for Engineers and PMs course begins September 5th, and I'll be taking it for a fourth time, I think now. The link and a 25% vanishing gradients discount are in the show notes. We recorded this conversation live and we live stream many episodes and run free workshops. And you'll find our events calendar, subset newsletter, and YouTube channel in the show notes. If you enjoy the episode, please share it with someone building an AI product right now. I'm Hugo Bown Anderson and welcome back to Vanishing Gradients. Hey there, Hamil, and welcome back to the show.

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