Simile, a synthetic‑user AI platform, closes a $200 million Series B round, reaching a $2 billion valuation and positioning itself in the fast‑growing AI research tools market.
Simile, the synthetic‑user AI platform, announced a $200 million Series B financing round, pushing its valuation to $2 billion—just five months after closing a $100 million Series A.
Funding round details
The new round was led by a consortium of venture firms, with participation from existing backers. The capital will be used to expand Simile’s infrastructure, accelerate product development, and broaden its go‑to‑market strategy.
What synthetic users are
Synthetic users are AI‑generated agents that mimic real‑world user behavior, allowing developers to test and train models at scale without privacy concerns. Simile’s platform provides customizable personas, enabling rapid iteration for chatbots, recommendation systems, and other interactive AI products.
Market positioning
By offering a turnkey solution for synthetic‑user generation, Simile aims to fill a gap in the AI research tools market, where demand for safe, scalable testing environments is surging.
- Accelerated product testing
- Reduced reliance on real‑user data
- Enhanced privacy compliance
- Scalable simulation for large‑scale AI models
Industry analysts see the funding as a signal that investors are betting on the next wave of AI tooling that supports responsible development and rapid prototyping.
Simile’s technology could become a foundational layer for AI product development, much like cloud compute did for software services.
The company plans to roll out new features later this year, including real‑time persona adaptation and deeper integration with major machine‑learning frameworks.