TL;DR: Rex is a Y Combinator Summer 2026 startup AI Operations Partner for Enterprise Order to Cash, currently active with a team of 2.
AI Operations Partner for Enterprise Order to Cash
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Rex is an AI-native service for order to cash. We replace people-heavy operations with AI agents that continuously manage invoices, customers and exceptions. Order to cash is a $60B outsourced function because the work is too messy for traditional automation. Every customer has different context, exceptions do not follow clean rules, and the next step is often buried in emails, portals, handoffs, or someone’s memory. Rex agents run continuously in the background and resolve work to SLA standards so cash keeps moving. We're live with pre-IPO tech companies, managing >$500m in receivables from F100 companies, cutting manual follow-up cycles from weeks to hours. We founded Rex after spending four years building Sequence, an a16z-backed finance ops platform, from zero to Series A — where we s…
Yes. Rex was funded by Y Combinator in the Summer 2026 batch. AI Operations Partner for Enterprise Order to Cash
Rex is an AI-native service for order to cash. We replace people-heavy operations with AI agents that continuously manage invoices, customers and exceptions. Order to cash is a $60B outsourced function because the work is too messy for traditional automation. Every customer has different context, exceptions do not fol…
Rex was part of Y Combinator's Summer 2026 batch.
Rex has a team of 2 people according to Y Combinator's directory.
Rex is currently listed as Active with a team of 2 in Y Combinator's directory.
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