Wonderful, the Israeli-Dutch startup behind an AI platform for building and running agents, has collected $550M in a Series C round led by Insight Partners. The deal values the company at $5B, more than double the $2B mark it set when Insight led its previous raise about six months ago.
Index Ventures, IVP, Vine Ventures, 9Yards and Bessemer Venture Partners returned for this round, and Salesforce joined as a first-time investor. Founded in early 2025, Wonderful grew fast selling customer-service AI agents customized for non-English-speaking markets, and it now works across more than 35 countries.
The product has since shifted toward a broader platform. Wonderful AI OS coordinates agents, workflows and AI apps with a company’s data, context and existing integrations, and it claims compatibility with any model and tech stack. Customers can adopt pieces of the platform selectively, pick the best model per workload and keep ownership of what they build, said CTO and co-founder Roey Lalazar.
The startup leans on forward-deployed engineering teams that embed with customers to speed integration, a model it credits for strong demand. Fresh capital will go toward faster product development, bigger FDE teams and expanding the go-to-market operation.
The raise adds to a busy stretch for agent-infrastructure startups, with capital concentrating among a small set of fast-growing firms. Wonderful’s jump from $2B to $5B in under six months signals investors are rewarding platforms that show they can ship working agents at enterprise scale rather than demo-grade demos.
