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Rex

Managed receivables operations with AI agents and expert finance operators.

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Company model
AI-led hybrid
Category
Finance & contract operations
Team size
2 (YC listing)
Rex website homepage screenshot

Rex is an AI operations partner for enterprise order-to-cash. Its agents carry out collections, dispute and cash-application workflows with oversight from finance operators.

What Rex does

Rex works across the systems and communication channels used to collect customer payments. Its agents can follow up accounts, handle disputes, work customer portals and update the ERP or CRM as the process progresses.

The deployment combines the customer’s procedures with expert finance operators who oversee the agents. Account-level activity is visible as work happens, with a record of actions and operational measures such as response times and resolution rates.

The model is intended for finance teams that want an operating partner rather than another application requiring the same manual work. Rex takes on repeatable execution while the team can retain control over the business rules and matters needing escalation.

  • Order-to-cash
  • Collections
  • Disputes
  • Cash application
  • Customer portals
  • ERP updates
  • CRM updates
  • Email workflows
  • Finance operators
  • Activity logs
  • Enterprise operations

Differentiation

Compared with a collections dashboard

Rex’s agents act on accounts and update the surrounding systems, rather than only prioritizing a list for a person to work.

Compared with staffing an O2C team

Its model combines automated execution with finance-operator oversight, providing a configured operation instead of headcount alone.

Track record

Rex publishes a named Synthesia customer story describing the use of agents across the company’s order-to-cash operation.

Company details

Founded
2026
Team size
2 (YC listing)

Investors & backers

  • Y Combinator

Open roles

2 listed
View all openings

News & interviews

Explore Rex

Rex works across the systems and communication channels used to collect customer payments. Its agents can follow up accounts, handle disputes, work customer portals and update the ERP or CRM as the process progresses.

Visit Rex

Sources & profile notes

This profile brings together published information about Rex, including its offering, company details and supporting sources. Review the original material for the full context.

Last reviewed October 21, 2026. Prices and availability may change; inclusion is not an endorsement.