Cover every account
Review every open PO on 
Ariba …
Run order to cash at any scale, with the team you already have. Delegate inbox triage, supplier portals, and cash application.
AI-native order-to-cash with RexAI agents that run your order-to-cash operations
Move invoices to cash faster. Rex acts across systems, handling collections conversations, disputes and portal work.Under your guardrails. Live in two weeks.
Rex at work: replying to an AP status enquiry with reasoning from the invoice, PO and terms; running a procedure that turns a received purchase order into a NetSuite sales order; uploading an invoice to a supplier portal and receiving the submission confirmation; and its autonomy rate climbing from 70% to 92% as it learns.Inbox Agent
- 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-cashwith Rex
The AR inbox, 30+ customer portals, and collections, handled by Rex with no added headcount.
Read the customer storyProblem
Manual work is the bottleneck between invoices and cash. Tasks pile up across disconnected systems, leaving teams overloaded and payments delayed.
Inboxes
Legacy systems
Offshore teams
Excel sheets
Solution
Rex keeps every case moving so nothing is delayed.Agents handle the work, gather context across systems and resolve blockers before they become backlog.
See everything
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?
Real-time visibility across your AR book. Stop tracking notes in spreadsheets. Get a live view of every customer and receivable.
Stay ahead
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
Get ahead of every receivable. Rex proactively follows up, flags risk and resolves issues before they escalate.
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 outsourcing and consulting.
Traditional outsourcingTransformation consultingRex
Pricing
Traditional
Priced by headcount and scope.
Consulting
Time and materials, scoped by the study.
Rex
Outcome and SLA-based pricing.
Coverage
Traditional
Depends on staffing, shifts, and handoffs.
Consulting
Ends when the engagement ends.
Rex
Continuous coverage with minute-level triage.
Visibility
Traditional
Monthly reports, reviews, and status calls.
Consulting
A snapshot of last quarter, in a deck.
Rex
Live view of actions, blockers, and SLA status.
Onboarding
Traditional
Multi-month transition, documentation, and ramp-up.
Consulting
Months of interviews and workshops.
Rex
Start in days. See value in weeks.
Control
Traditional
Process docs and offshore management.
Consulting
Recommendations. Execution stays with you.
Rex
Implement process changes by next day.
Quality
Traditional
Highly variable.
Consulting
Depends who is staffed.
Rex
Consistent and auditable.
Integrations
Skip the multi-quarter onboarding.Rex builds context from existing systems.
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 DriveEnd to end process coverage, without the headcount.
- 90%+
- Inbox auto-triage rate
- 30m
- Average response time
- 12d
- Faster DSO
Security
Built for enterprise.
Compliance
SOC2 Type II(monitoring)
SOC 2 Type II (monitoring), 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.
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.