Lenny's Newsletter · 26 October 2026

🎙️ How I AI: Claude Duet honest review + Why Reddit built its own AI prototyping tool

Lenny Rachitsky

Reddit's principal UX engineer shares how the company built Reddit Proto, an internal AI-powered prototyping platform that lets designers ship production-quality prototypes without Git, plus Lenny's review of Claude Duet, Anthropic's new personal agent.

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Topics: Developer Tools · AI (Horizontal)

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