Nanonets vs Rossum in 2026: Flexible Document AI or Purpose-Built AP Capture?
Nanonets and Rossum are both accurate at pulling line items off purchase orders, so accuracy is rarely what decides this one. Nanonets is a general document AI platform with credit-based pricing and a free tier of starter credits, and it will extract from almost any document type you point it at. Rossum is narrower and deeper, built around transactional finance documents with its Aurora engine plus validation rules, approval routing, and ERP integration, and it carries a published Starter plan around $18,000 a year with quote-only tiers above it.
Scored head to head
| Criteria | Nanonets | Rossum | Purchase Order Converter |
|---|---|---|---|
| Accuracy | 9.0 | 9.0 | 8.5 |
| ERP integration | 9.5 | 9.5 | 7.5 |
| Speed | 7.5 | 7.0 | 9.5 |
| Ease | 6.5 | 6.0 | 9.5 |
| Price | 5.5 | 4.0 | 10.0 |
| Privacy | 7.0 | 7.0 | 9.5 |
| Overall | 7.5 | 7.0 | 9.1 |
Scores from our full 2026 comparison, out of 10. Between the two, Nanonets scores higher overall.
Pick Nanonets if
Pick Nanonets if purchase orders are one of several document types you need to handle, if you want to start extracting this week without a procurement cycle, or if your team wants to build custom models on its own document set. Its consumption pricing scales down for smaller volume, with the caveat that re-runs after a bad extraction consume credits again.
Price: ~From $500/mo, custom enterprise pricing (as of 2026)
Pick Rossum if
Pick Rossum if POs and invoices flow into a formal AP process where the work is not just extraction but matching, duplicate checks, exception handling, and getting approved documents into an ERP. That workflow layer is what you are paying the premium for, and for a mid-to-large finance team with high supplier variety it is usually the deciding factor.
Price: ~Enterprise pricing, custom quote (as of 2026)
The bottom line
Rossum is the stronger choice when the document is the start of a finance workflow and you need the whole capture, validate, approve, post chain in one system. Nanonets is the stronger choice when you need flexible extraction across mixed document types, faster time to value, and pricing that does not start in five figures. Neither is aimed at someone converting the occasional PO, so if you just need SKU, quantity, unit price, and ship-to in a spreadsheet a few times a week, our free converter at purchaseorderconverter.com handles that in the browser with no signup, and you can move up to a platform like these when volume justifies the automation.
- ✓Free tier, no signup to try
- ✓Reads any PO layout — no per-customer templates
- ✓Output mapped to common order-entry / ERP import columns
- ✓Files not stored — processed in-memory and deleted
Free, no signup. Or see the full ranking of all 6 tools.