The round was led by CRV, bringing total funding to $50 million. Existing investors Lightspeed Venture Partners, Y Combinator participated along with lead researchers from OpenAI, Anthropic, and Thinking Machines. Raindrop is trusted by some of the largest and fastest-growing companies in the world, including Vercel, Framer, Clay, and Fortune 100 Enterprises to protect their users from agent failures.

Raindrop is the monitoring platform for AI agents. It reads production agent trajectories to catch silent failures, including hallucinated answers, tool misuse, and behavior changes introduced by a model upgrade. Raindrop is trusted by Fortune 100 and Fortune 500 enterprises and by the fastest-growing AI companies to protect their users.