Raindrop
Helps developers narrow down which part of an AI application failed.
Raindrop helps developers monitor AI agents in production. It traces agent runs, groups failures into issues and replays real traffic to test proposed fixes.

Raindrop
Founded 2023 · San Francisco, California, US
Official WebsiteUS$35 million
Raindrop introduced Simulations alongside the financing, giving developers a way to test changes to AI agents before release.
Led by CRV. Participation included Lightspeed Venture Partners.
Source · raindrop.ai ↗US$15,000,000
Raindrop said it would build tools to help teams monitor AI agents after deployment.
Participation included Lightspeed Venture Partners, Figma Ventures, Vercel Ventures, Amjad Masad, Michele Catasta, Walden Yan, Koen Bok, Jorn van Dijk, Andrew Hsu, Akshay Kothari, Y Combinator.
Source · raindrop.ai ↗Zubin Koticha and Alexis Gauba worked together at Opyn before co-founding Raindrop, which helps developers investigate failures in AI agents running in production.
Helps developers narrow down which part of an AI application failed.
Raindrop's product connects detection with debugging. It groups traces of problematic agent behavior into issues, then uses replayed production traffic to help teams see whether a proposed code change addresses the pattern they observed.
Traditional infrastructure monitoring is often triggered by an exception or a slow request. Raindrop concentrates on cases where an agent completes the request but gets the work wrong, so the team needs to inspect behavior across traces rather than look for a single failed call.