Compare All AI Document Processing & IDP Software 2026

Intelligent document processing uses AI to extract structured data from unstructured documents like invoices, contracts, forms, and receipts. It combines OCR with machine learning and increasingly LLMs to read, classify, and pull out fields with high accuracy, automating data entry that previously required manual keying.

Most IDP services charge per page or per document processed, with volume discounts at scale and higher rates for complex extraction or custom models. Cloud OCR/extraction APIs from major providers use per-page pricing, while specialized IDP platforms add subscriptions for workflow, human-in-the-loop review, and integrations.

Invoice-focused platforms like Rossum and Nanonets, and the major cloud document-AI services, all handle invoices well. The best fit depends on volume, the variety of formats you receive, accuracy requirements, and whether you need built-in approval workflows versus just a raw extraction API. Most offer trials to test on your real documents.

Watch for per-page fees that scale with volume, charges for human-in-the-loop review of low-confidence extractions, custom model training costs, and integration/workflow platform fees. Low extraction accuracy on messy documents can also add hidden labor cost for manual correction.