Raindrop announces Series A and early-access Simulations for AI agents
Raindrop says Simulations creates test environments to check agent changes before deployment. Investor Lightspeed says the Series A brings the company’s total funding to $50 million.
TLDR
Raindrop announced its Series A and early access to Simulations on September 17, 2026. The company says CRV led the round, with participation from researchers and leaders at Anthropic, Thinking Machines and OpenAI. Investor Lightspeed says the round brings total funding to $50 million.
Raindrop says Simulations automatically creates test environments with simulated services and databases for every pull request—a proposed code change. Lightspeed describes the product as a research preview that replays real production traffic and existing test cases against proposed agent changes to look for unexpected behavior before deployment.
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