Rillet, an AI-native ERP platform for finance teams, raised $100 million in a Series C round at a $1 billion valuation on August 18-19, led by ICONIQ Capital with participation from Sequoia Capital, Andreessen Horowitz, Bain Capital Ventures, and others. The unicorn milestone comes in the company's third fundraise in 14 months, with total funding now exceeding $200 million since its 2021 founding.
Rillet emerged from stealth in 2024 and is rebuilding the general ledger as an AI-first system where agents and humans work inside a shared real-time ledger with full auditability. The company doubled new annual recurring revenue in the three months prior to this raise and now serves 600+ customers including Neuralink, Mercor, and Function Health. Approximately 40% of the customer base sits outside tech and AI, spanning biotech, healthcare, fintech, and professional services.
Rillet is explicitly positioning itself as a replacement for legacy ERP systems (NetSuite, SAP, Oracle Fusion, Workday) with an architecture designed for agentic finance operations. Customers cite finance teams of 3-5 people managing billions in ARR using Rillet's agent-led ledger. The company targets aggressive expansion into new verticals and is backed by EY's alliance for finance transformation as an official partner with 50%+ of Accounting Today's top 20 CPA firms.
For finance and infrastructure leaders, Rillet's rapid ARR doubling and CPA firm partnerships signal credible traction in enterprise finance automation. The $1B valuation is justified only if the company maintains retention and successfully converts traditional ERP customers at significant TCO savings. Watch NRR metrics carefully: vibe coding and agent-first finance are nascent categories with unproven durability at enterprise scale.