Josh Miller, CEO & Co-Founder of Gradient Health: 40 People, $40 Million, and the Data Behind Medical AI

Josh Miller, CEO and co-founder of Gradient Health, joins me to share how a Durham-area startup became the go-to source of medical data for AI developers around the world.

Josh traces the path from his first company, FarmShots, a satellite imaging startup acquired by Syngenta, to Gradient, which began as an attempt to build cancer-detection AI and turned into something bigger once the team saw how hard it was to get the data. The conversation covers why de-identifying medical data is so much harder than removing a name, how foundation models changed the value of labeled data, and why expert-curated datasets are becoming the next frontier.

Gradient's numbers are remarkable: roughly 40 million dollars in revenue this year with about 40 people, on only about 9 million dollars raised. Josh credits a culture that is willing to talk openly about what isn't working, along with AI-native engineering that has made his best engineers dramatically more productive. He also talks about go-to-market when customers are racing a 20 million dollar training run, his company's moat, and a personal reminder for founders to take care of themselves on the long road.

Timestamps
00:00 Welcome to NC Tweener Talks
00:25 Thanks to our sponsors
01:35 Scot's intro: portfolio wins you can't talk about
02:30 Why Tweener invested in Gradient Health
04:55 Welcome Josh Miller
05:55 FarmShots: satellite imagery for farms
07:45 A lever through time
08:30 The Syngenta exit and Duke roots
09:25 Never again… then startup #2
10:40 Founding Gradient before ChatGPT
11:30 From building cancer AI to supplying the data
13:30 De-identification and the 87% problem
14:30 Paying hospitals back
15:20 Weak labels vs. strong labels
16:55 First contract and the revenue curve
19:20 Fundraising: $9M raised in total
20:35 Getting pulled by the market
21:55 Atlas 2 and multimodal data
23:00 Picks and shovels vs. building the model
23:55 40 people, $1M per head
25:30 Post-training and expert-curated data
27:35 Culture: talking about problems
28:55 AI-native engineering and the 100x engineer
30:15 Go-to-market in the AI data space
32:10 Gradient's competitive moat
33:10 Founder lesson: take care of yourself
34:15 Wrap and credits
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Where to Find Josh Miller:
LinkedIn: https://www.linkedin.com/in/joshmichaelmiller/
Gradient Health: https://gradienthealth.io/

Where to Find Scot Wingo:
LinkedIn: https://www.linkedin.com/in/thescotwingo/
Tweener Times: https://www.tweenertimes.com/
X: https://x.com/scotwingo

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This episode of Triangle Tweener Talks is hosted by Scot Wingo, presented and produced by NC Tweener Fund, with creative assets and design support from Walk West. 

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Josh Miller, CEO & Co-Founder of Gradient Health: 40 People, $40 Million, and the Data Behind Medical AI
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