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Photo calorie app Cal AI was built by two teenagers


Cal AI has generated over 5 million downloads in 8 months, it says. Founders Zach Yadegari and Henry Langmack are just 18.

In a world filled with “vibe coding,” Zach Yadegari, teen founder of Cal AI, stands in ironic, old-fashioned contrast. It uses models from Anthropic and OpenAI and RAG to improve accuracy and is trained on open source food calorie and image databases from sites like GitHub. It now includes another co-founder, Jake Castillo, 28 who is COO and running influencer marketing, as well as eight full-time employees between developers, a designer, and social media managers.

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