Review every open PO on 
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Delegate the work
Rex handles customer follow-ups, portal submissions and cash matching across your existing systems.
AI-native order-to-cash with RexAI operations partner for order to cash
Rex is a new operating model for order to cash in the enterprise.
Collect cash faster, improve KPIs and deliver a better customer experience, without the headcount.
- Faster DSO
- 12d
- Touchless communications
- 90%+
- Average response time
- 30m
Agents now run order to cash
- Invoices collected84,260
- Portal submissions21,480
- Disputes triaged6,380
- Payments applied32,140
- Emails drafted118,620
- Promises captured8,940
- Actions completed184,120
How Synthesia transformed order-to-cash with Rex
With Rex, Synthesia brought AI into every part of its order-to-cash operation, giving its lean finance team the capacity to support continued growth.
Read storyFinance operations now run on agents
Turn your order-to-cash process into an agentic operation
Rex Agents take action across email, ERP, CRM, voice and chat, with oversight from expert finance operators. They drive collections, resolve disputes and keep systems updated, steadily improving your order to cash KPIs.
Agents
Specialized agents work every account across collections, disputes, cash application and portals.
Mission Control
See what every agent is working on, account by account, with each action logged as it happens.
Self-driving KPIs
Track DSO, response times and resolution rates against the targets you agreed with Rex.
Experts in the loop
Rex provides expert finance operators to support each deployment and oversee the work agents do.
Operating Procedures
Your policies become procedures agents follow, and each approved exception refines them.
Assistant
Ask about any customer, invoice or dispute and get an answer drawn from your own data.
Finance Context Layer
One view of each account, built from years of history in your ERP, CRM, inbox, portals and bank feeds.
SLAs
Response and resolution times are agreed with you up front, and Rex reports against them.
Solution
Your order-to-cash operation, run by Rex.Delegate collections, cash application and customer portal work to AI agents, with dedicated finance experts managing delivery.
What did we agree with Target?Who broke a payment promise this month?Top 10 accounts by outstanding balanceWhich customers have gone quiet for 14+ days?
Draft a follow-up to Volvo on INV-2847Summarize this week in ARWhy is Samsung's payment stuck?When did Walmart last pay on time?
Show me open disputes over $25KWhat's our DSO trending to next month?Flag accounts at risk of slipping past 60 daysWhich customers changed payment terms recently?
Stay in control
Set policies and approval limits. See completed work, open exceptions and performance against agreed KPIs and SLAs.
Case · Boeing
Active caseDetected payment cadence drift +7d
3 open invoices. No activity since Mar 28
Risk score: 82% slip past 60-day terms
Rex is monitoring
Have an expert on your side
A dedicated Rex finance expert leads onboarding, manages ongoing delivery and works with your team to improve KPIs.
Integrations
Rex unifies context from existing systems.No migration required.
Rex connects to your existing systems and builds context from years of history. Your team doesn't need to explain anything.
Rex
Oracle NetSuite
SAP
Microsoft Dynamics
Workday
Oracle Fusion
Salesforce
Slack
Microsoft Teams
SharePoint
Google DriveOracle NetSuiteSAPMicrosoft DynamicsWorkdayOracle FusionSalesforceSlackMicrosoft TeamsSharePointGoogle DriveOracle NetSuiteSAPMicrosoft DynamicsWorkdayOracle FusionSalesforceSlackMicrosoft TeamsSharePointGoogle DriveSecurity
Built for enterprise.
Compliance
SOC2 Type II
SOC 2 Type II certified, with AES-256 encryption, role-based access, and full audit logs on every action.
Data privacy
GDPR
GDPR compliant with EU data residency. Encrypted in transit and at rest. Your data is never used to train models.
Enterprise-grade
Enterprise SSODirectory SyncRole-based accessAgent audit logsNo model training
Enterprise SSO with Okta, Azure AD, Auth0, and dozens more, plus SCIM directory sync and magic links.
Rex is learning
Gmail · Boeing threadRex
Subject: RE: Invoice INV-2847
We'll process this via Coupa portal using PO #BG-44218. Payment will follow net 45 terms per the MSA.
Rex extracted
Portal: CoupaTerms: Net 45PO: #BG-44218
Comparison
The new way to run order to cashvs traditional outsourcing.
Traditional outsourcingRex
Pricing
Traditional
Priced by headcount and scope.
Rex
Outcome and SLA-based pricing.
Coverage
Traditional
Depends on staffing, shifts, and handoffs.
Rex
Continuous coverage with minute-level triage.
Visibility
Traditional
Monthly reports, reviews, and status calls.
Rex
Live view of actions, blockers, and SLA status.
Onboarding
Traditional
Multi-month transition, documentation, and ramp-up.
Rex
Start in days. See value in weeks.
Control
Traditional
Process docs and offshore management.
Rex
Implement process changes by next day.
Quality
Traditional
Highly variable.
Rex
Consistent and auditable.
FAQ
Frequently asked questions.
What is Rex?
Rex is an AI operations partner for order-to-cash. Rex agents run accounts receivable workflows for enterprise finance teams, including collections, invoice portal uploads, cash application, payment reconciliation, and AR inbox management.
Rex connects to the systems you already use, including your ERP, CRM, email, and Microsoft Teams.
Who is Rex for?
Rex is built for enterprise finance and accounts receivable teams with resource-intensive order-to-cash operations. That typically means large customer bases, multiple systems, high transaction volumes, and manual work across collections, cash application, billing, disputes, and customer portals.
How is Rex different from accounts receivable software?
Most accounts receivable software helps teams organize, prioritize, or automate parts of the AR process. Rex is designed to do the underlying work.
Rex agents can follow up with customers, upload invoices to supplier portals, reconcile payments, process remittances, update systems, and handle routine requests. Your team stays in control of exceptions, approvals, and higher-risk decisions.
Does Rex replace my ERP or existing AR systems?
No. Rex works with your existing finance stack rather than replacing it.
Rex connects to ERP, CRM, email, collaboration tools, customer portals, and existing AR systems, then operates workflows across them. There is no ERP migration or rip-and-replace project.
How long does Rex take to implement?
Most teams can go live with Rex in under two weeks.
Rex connects to your existing systems and learns the procedures your team already follows. There is no data migration or lengthy software implementation required.
How is Rex priced?
Rex is priced around outcomes, not seats.
Pricing reflects the scope and volume of finance operations Rex takes on, and is benchmarked against the cost of running those processes with internal teams, shared service centers, or BPO providers rather than traditional software licenses.
What ROI can I expect from Rex?
Rex improves accounts receivable performance in two ways: it reduces the manual work required to run AR and helps invoices turn into cash faster.
Customers typically see DSO improve by around 12 days and save more than 20 hours of manual work per AR operator each week. Results can begin within weeks of deployment.
How does Rex handle complex accounts receivable scenarios?
Rex follows your procedures, policies, approval rules, and authority limits. Every action is recorded with a full audit trail.
When a case requires human judgment or falls outside its authority, Rex escalates it to the right person with the relevant customer, invoice, payment, and communication context already assembled.
Learn more
See Rex run your order-to-cash.
A 30-minute walkthrough of how specialized agents work every account, under your guardrails.