AI user simulations emerge as a trend for fast product idea testing, says Lenny Rachitsky

lennysan · x · 2026-10-07

Lenny Rachitsky highlights a growing trend: teams using AI "simulated users" to quickly test product ideas and flow tweaks before real-user validation. He lists tools like simileai, primitivelabsai, and syntheticusers, and asks the community for firsthand experiences.

Related event: Lenny Highlights AI User Simulation as Product Validation Trend(2 posts)→

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