Synthetic-User Startup Simile Raises $200 Million at $2B Valuation

Synthetic customer research pioneer Simile announced a $200 million Series B funding round at a $2 billion valuation, coming just five months after its Series A. The investment underscores booming demand from enterprise software providers seeking to test products using autonomous AI user fleets.

Simile's platform creates thousands of behavioral AI agent personas that interact with web and mobile applications, providing immediate usability telemetry and conversion analytics. Product leads reviewing simulation scripts can format JSON data using [Code Formatter](/tools/code-formatter/).

Simulating Millions of Diverse Customer Behaviors in Minutes

By simulating diverse demographic preferences, cognitive biases, and accessibility edge cases, engineering teams can identify UI friction points and software bugs prior to public product launches.

Transforming Product Development with Autonomous UX Cohorts

Investors note that synthetic user testing represents a massive paradigm shift in product management, replacing slow, expensive traditional focus groups with instant algorithmic user feedback.