Stampli vs Medius: Accounts Payable Automation Compared

Stampli vs Medius: the short answer

For most US finance teams in 2026, Stampli is the better fit when your problem is general accounts payable and you want fast time to value: AI invoice capture, an on-invoice collaboration thread for approvals, and a connector to the ERP you already run, live in weeks. Medius is the better fit when you run a larger or multi-entity operation, process well over 10,000 invoices a year across currencies, and want the system to automate capture, coding, routing, fraud detection, and global payment with as little human input as possible. Both are real AP automation platforms; the right one depends on your scale and how much you want automated unattended. If neither lands, our roundup of the best AP automation software compares the wider field. You can also see how each stacks up against a procurement-first suite in Medius vs Coupa and Stampli vs Coupa.

Below is an honest comparison of pricing, AI capture, approvals, fraud detection, payments, and ERP fit, so you can match the platform to how your team actually works.

How Stampli and Medius approach accounts payable

Stampli centers everything on the invoice. Its Collaboration Hub puts approvers, coders, and AP staff in one thread on each invoice, so questions get answered in context instead of in scattered email. AI handles invoice data capture and learns your coding, but Stampli deliberately keeps a person in the loop on exceptions, which makes it quick to adopt and easy to trust. It connects to more than 70 ERPs and mirrors your chart of accounts, so most mid-market teams go live in weeks.

Medius approaches AP as one part of end-to-end spend automation. It captures invoices at the line level and runs invoice matching, coding, and routing automatically, citing 95% precision after just two invoices, and it builds fraud and risk detection into the core platform. Medius scales across entities, currencies, and high invoice volume, with 100-plus pre-packaged connectors including SAP, Oracle, Microsoft Dynamics, NetSuite, and Infor. It is built for finance teams that want the system to do more of the work and that operate at enterprise scale. Medius was named a Leader in the 2026 Gartner Magic Quadrant for Accounts Payable Applications.

Pricing: how Stampli and Medius charge

Both vendors use custom, quote-based pricing rather than public self-serve plans. Stampli scopes its quote around invoice volume, user count, the ERP you connect, and the modules you enable, such as procurement, Direct Pay, and cards. Medius sells three editions, Professional, Enterprise, and Premium, with higher tiers adding Medius Pay, supplier management, and broader user access. The practical takeaway is to get a written quote scoped to your real invoice volume and entity count from each, and compare total cost including implementation, not a list price.

AI capture, coding, and automation depth

The biggest functional difference is how much the platform automates without a person. Medius automates line-level capture, coding, routing, and fraud checks, which suits high-volume teams that want hands-off processing. Stampli is accurate and learns your coding, but keeps a reviewer in the loop on exceptions through its on-invoice thread, which suits teams that want speed and control without a heavy configuration project. Neither approach is wrong; the choice is whether you optimize for maximum unattended automation or for fast, collaborative accuracy.

Fraud detection and payments

Medius makes fraud and risk detection a first-class feature, screening invoices and payments for duplicates and anomalies before money moves, and it executes global payments through Medius Pay on its higher tiers. Stampli flags duplicates and keeps a full audit trail, and pays vendors through Stampli Direct Pay and the Stampli Card across ACH, check, and card. If built-in payment fraud screening and global payment rails are buying requirements, Medius leads; if you want clean domestic AP with payments tied to approved invoices, Stampli covers it in one platform.

ERP fit and implementation

Stampli supports 70-plus ERPs and is designed to mirror your existing chart of accounts and approval logic, so mid-market teams typically go live in weeks with little disruption. Medius offers 100-plus fully managed connectors and goes deeper on large enterprise systems like SAP and Oracle, with implementations that scale in length with entity count and ERP complexity. For Sage Intacct and similar mid-market stacks, both integrate cleanly; if your shortlist also includes an invoice-first tool aimed at multi-location operators, our Stampli vs Ottimate comparison covers that angle. For a multi-entity SAP or Oracle environment, Medius has the broader enterprise footprint.