Series A · AI

Raindrop raises Series A, bringing total funding to $50m

CRV led the undisclosed round, with Lightspeed Venture Partners and Y Combinator participating.

Researchers from OpenAI, Anthropic and Thinking Machines also participated but were not individually named. Their participation does not identify those employers as institutional investors.

Raindrop plans to accelerate detection research and scale enterprise adoption. It will also advance Simulations, which tests agent changes against production traffic before deployment.

The $50m figure is cumulative funding, not the size of this Series A.

Use of funds

Accelerate detection research

Scale product adoption among enterprises

Advance Simulations, which tests agent changes against production traffic before deployment

Funding history

Series A · This roundUndisclosed

Sources

  1. Raindrop Closes Series A Fundingfinsmes.com · Sep 18, 2026
  2. raindrop.ai
  3. docs.raindrop.ai
  4. raindrop.ai