Software Comparison
Medius vs. Rillion
Which AP Automation solution is right for you?
Both Medius and Rillion offer AI-powered AP automation. Medius provides advanced invoice processing, global payments, fraud detection, and real-time visibility, with the option to expand into procurement and contract management. Rillion focuses on core AP automation, specializing in invoice processing, approval workflows, and ERP integrations.
Whether you’re managing a complex finance operation or focusing on simplifying workflows, it’s important to evaluate how each solution supports automation, security, and scalability over time. Here’s a closer look at how Medius and Rillion compare.
Quick summary
- Medius: Best for advanced AI-powered AP automation with global payments, fraud detection, and enterprise scalability.
- Rillion: Good for organizations seeking focused only on AI-powered AP automation.
- Key difference: Both platforms automate accounts payable with AI, but Medius delivers deeper automation, global finance capabilities, and the flexibility to expand into procurement, sourcing, supplier onboarding, and contract management as business needs evolve.
What is Medius?
Medius is an AI-powered accounts payable automation platform that helps finance teams automate invoice capture, approvals, payments, fraud detection, and supplier interactions. As business needs grow, organizations can extend Medius with procurement, sourcing, supplier onboarding, contract management, and expense management capabilities.
Medius core benefits:
AI-powered invoice capture, approvals, payments, and fraud detection
Global payment automation and enterprise scalability
Proprietary AI-native invoice capture and e-invoicing
Real-time analytics and spend visibility
Extend into procurement, sourcing, supplier onboarding, and contract management as needed
Straightforward packaged pricing with flexible deployment
What is Rillion?
Rillion (previously Palette Software and Centsoft) is an accounts payable automation platform focused on invoice capture, approval workflows, ERP integrations, and payment automation. It primarily serves the US and Nordic markets.
Rillion core benefits:
- AI-powered invoice capture, coding, and approval workflows
- Flexible multi-entity and multi-ERP support
- Payment automation for US customers
- Local customer support in the US and Nordic markets
- Customizable workflows for accounts payable teams
At a glance
Medius vs. Rillion: Feature comparison
| FEATURE | MEDIUS | RILLION |
|---|---|---|
| Data capture |
 Proprietary AI-native, self-learning engine trained on 2.4B+ invoice data points |
AI-native invoice capture |
| E-invoice support |
Included in Medius Capture |
 Managed via external partner |
| AI-powered workflow |
Intelligent capture, coding, routing & fraud detection |
AI-powered capture, predictive coding & routing |
| Fraud & risk detection |
AI-based scoring & alerts |
Rule-based, limited to payments (US only)* |
| AI assistant |
User guidance via conversational AI* |
Riley AI assistant for AP support and user guidance |
| PO matching |
3-way matching (line & header levels) |
3-way matching (line & header levels)* |
| Payment automation |
Built-in payments platform |
Built-in payments platform (US only)* |
| Supplier conversations |
AI-powered responses to invoice inquiries* |
 Not available |
| Supplier onboarding |
Self-serve portal* |
Not available |
| Expense management |
Spend control & corporate card integration |
Not available |
| Sourcing |
Included in platform |
Not available |
| Procurement |
Included in platform |
Purchase requisition module (EU only)* |
| Contract management |
Centralized storage & approvals |
Not available |
| Analytics & reporting |
Dashboards, custom reporting and integration to BI tools |
Pre-built reports and filtering functionality |
| AP benchmarks |
Available on public website and within the tool |
Available within the tool |
| ERP integration |
100+ plug-and-play ERP connectors (SAP, Oracle, Microsoft Dynamics, NetSuite, and more) |
Plug-and-play for top ERPs, open for multi-ERPs |
| Customer support |
Direct support via online portal and global team |
Direct support via online portal and global team |
| Pricing model |
Two packaged price plans |
Three packaged price plans |
*Not included in all price plans 
Fully included 
Limited or partial functionality 
Not available
Key differences between Medius and Rillion
AI-powered invoice capture
- Medius: Proprietary AI-native engine that continuously learns across invoice capture, coding, approvals, fraud detection, and payments to maximize automation and touchless processing.
- Rillion: AI-native invoice capture with intelligent data extraction, predictive coding, and approval routing focused on streamlining AP workflows.
Analytics & visibility
- Medius: Real-time dashboards, customizable reporting, spend analytics, and business intelligence integrations that provide deeper visibility into AP performance, cash flow, and financial operations.
- Rillion: Pre-built reports with filtering and analytics designed for day-to-day AP management.
Payment automation
- Medius: Global payment automation supporting multiple payment methods, entities, currencies, and international operations.
- Rillion: Payment automation currently available for businesses in the US.
Platform capabilities
- Medius: AI-powered AP automation with payments, fraud detection, supplier interactions, and the flexibility to extend into procurement, sourcing, supplier onboarding, contract management, and expense management as business needs evolve.
- Rillion: Focused primarily on accounts payable automation, with purchase requisition functionality available for Nordic customers.
Medius vs. Rillion: Key differences summarized
Both Medius and Rillion use AI to automate invoice capture, coding, and approval workflows. Medius differentiates itself with a proprietary AI-native engine that continuously learns across the AP lifecycle, while Rillion focuses on AI-powered invoice capture, predictive coding, approval routing, and the Riley AI assistant.
On fraud detection, Medius provides AI-driven risk scoring across the full AP process. Rillion's fraud detection is rule-based, focused on payments, and currently available only for US customers.
On payments and platform capabilities, Medius supports global payment automation and can extend beyond AP into procurement, sourcing, supplier onboarding, and contract management. Rillion's payment automation is limited to the US, and its procurement capabilities are primarily focused on Nordic customers.
Bottom line: Medius is the stronger choice for organizations seeking enterprise-grade AP automation with advanced AI, global payments, and room to expand as business needs evolve. Rillion is well-suited for organizations seeking AI-powered AP automation with flexible workflows and multi-ERP support, particularly in the US and Nordic markets.
PaletteArena end of life:
Why it’s time to choose Medius over Rillion Prime
Rillion recently announced that PaletteArena will reach its end of life (EOL) on September 30, 2026. After that date, your PaletteArena software license will be terminated, and no support or maintenance will be available. Rillion is encouraging customers to migrate to its new cloud platform, Rillion Prime, but this isn’t as easy as flipping a switch. It’s a complete system change with new contracts, costs, and risks.
If you’re a current PaletteArena user, now is the time to re-evaluate your AP automation strategy. Rather than reinvesting in another Rillion migration, many finance leaders are moving to Medius AP Automation, a proven alternative that delivers faster ROI, stronger control, and long-term stability.
Why Medius is the right choice over upgrading to Rillion
Faster, lower-risk implementation
Medius's 100+ preconfigured ERP integrations combined with a rapid deployment methodology, mean most customers go live in 8–12 weeks — without the complexity or cost of a lengthy Rillion migration project. You’ll see value faster, with minimal disruption to your finance team.
Beyond automation — intelligent finance control
Medius helps you move beyond basic invoice processing with AI-powered fraud detection, global payments automation, and spend analytics that give you full visibility and control across your financial operations.
Proven results for global organizations
Enterprises around the world — including Nissan, Mowi, and Viking Line — have already chosen Medius to gain modern automation that supports business across borders, stronger international compliance, and a future-ready finance function.
Which AP Automation solution is
right for your business?
Medius and Rillion are both solutions to automate AP workflows and increase control of spend. Choosing the right one depends on your specific business needs, current challenges, and future plans.
Choose Medius if you need:
- AI-powered AP automation that scales with your business
- Global payment automation and support for international operations
- Advanced fraud detection and risk management
- Real-time analytics and deeper visibility into spend and cash flow
- Support for e-invoicing and global compliance requirements
- The flexibility to extend into procurement, sourcing, supplier onboarding, and contract management as your needs evolve
Choose Rillion if you need:
- AI-powered AP automation with flexible workflows
- Multi-entity and multi-ERP support
- A user-friendly solution for mid-sized organizations
- Local support in the US and Nordic markets
Payment automation for US-based operations
Why finance teams choose Medius
Automation focus
96.3% touchless processing for PO invoices — more than 4x the market average of 23.4% (Ardent Partners 2025).
Customer trust
Customers scored Medius “above benchmark” for ROI, TCO and Business Value
Industry recognition
Medius named a Leader in the 2026 Gartner® Magic Quadrant™ for Accounts Payable Applications
"I don't know where we would be without Medius. I was physically signing invoices only a year ago. That would be impossible now."
Eva Miguel Banos
Finance Director, Karl Lagerfeld
FAQ: Medius vs. Rillion
Medius is generally the better choice for organizations that want advanced AI-powered AP automation with room to grow. Rillion focuses primarily on streamlining core accounts payable workflows.
Both solutions support multiple entities, currencies, invoice formats, and ERP integrations. Medius is better suited for global organizations with worldwide payment automation, support for e-invoicing compliance, and the flexibility to expand into procurement, sourcing, supplier onboarding, and contract management. Rillion's payment automation is currently limited to the US, and its broader procurement capabilities are primarily focused on Nordic customers.
Medius customers typically go live in 8–12 weeks, depending on factors such as the number of entities, ERP environment, and AP process complexity. Rapid deployment helps organizations automate AP faster while minimizing disruption to finance teams.
Yes. Rillion offers payment automation for US customers. Organizations outside the US typically manage payments through their banking platform or ERP.
Both platforms use AI to automate invoice capture, coding, and approval workflows. Medius uses a proprietary AI-native engine that continuously learns across the AP lifecycle—including invoice processing, payments, fraud detection, and supplier interactions—to increase automation over time. Rillion offers AI-native invoice capture, predictive coding, approval routing, and the Riley AI assistant to streamline AP workflows.
Yes. Both platforms use AI-powered invoice capture and workflow automation to reduce manual processing. Medius combines AI-native invoice capture with continuous learning across the AP lifecycle to maximize automation over time, while Rillion focuses on AI-powered invoice capture, predictive coding, and approval routing.
Medius provides AI-driven fraud detection with invoice risk scoring, anomaly detection, and configurable controls across the AP process. Rillion's fraud prevention is rule-based, focused on payment workflows, and currently available only for US customers.
Yes. Organizations using Rillion or preparing for the PaletteArena end-of-life can migrate to Medius. In addition to advanced AP automation, Medius offers global payments, AI-driven fraud detection, real-time analytics, and the flexibility to expand into procurement, sourcing, supplier onboarding, and contract management as business needs evolve.
Both platforms offer AI assistants to help users navigate AP workflows. Medius Copilot is embedded across the AP lifecycle to support finance teams with automation, insights, and decision-making. Rillion's Riley AI assistant helps users access invoice information, answer system questions, and streamline day-to-day AP tasks.
Yes. Medius supports global operations with worldwide payment automation, e-invoicing compliance, and a broad network of ERP integrations. Organizations can also extend beyond AP into procurement, sourcing, supplier onboarding, and contract management without changing platforms. Rillion's payment automation and broader procurement capabilities remain more geographically focused.
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