Raindrop raises $35M series a
Announced 18 September 2026
◆ The Round
Raindrop raised $35M in series a funding, announced on 18 September 2026, led by CRV, with participation from Lightspeed Venture Partners, Y Combinator. The round is tracked live by Fusion42 as part of the Raise fund database and the Scout startup database.
◆ About Raindrop
An observability platform for AI agents that detects failures in production and simulates agent behavior before deployment. Raindrop is based in United States and currently at series a stage, operating in AI Infrastructure.
◆ Investors
LeadCRV
ParticipationLightspeed Venture Partners, Y Combinator
◆ Market context
This funding event is a citable node in Fusion42's market graph: it links Raindrop's Scout profile to the funds behind the round and to related Wire analysis, and is refreshed from public announcements as the round is confirmed or extended. It is the same live market data Arthur reasons over when benchmarking a founder's own raise against what is closing in the market right now.
◆ Explore the market
◆ FAQ
How much did Raindrop raise?
Raindrop raised $35M in its series-a round, announced 2026-09-18.
Who invested in Raindrop's series-a round?
The round was led by CRV, with participation from Lightspeed Venture Partners and Y Combinator.
What does Raindrop do?
An observability platform for AI agents that detects failures in production and simulates agent behavior before deployment.
Verified 17 September 2026 · Sources: public filings