APIbenchmarks

Category report · 7 providers evaluated

Best Document AI & OCR APIs

Document AI & OCR APIs turn PDFs, scans, and images into structured data, plain text, tables, key-value pairs, and full schema extraction. The category splits into hyperscaler platforms (AWS, Google, Azure) that bundle OCR into broad cloud suites with deep SDK coverage and hard SLAs, and a wave of AI-native challengers (Reducto, Unstructured, Mindee, Nanonets) built for LLM/RAG pipelines and agentic extraction. Compare on documentation/DX quality, reliability and SLA maturity, breadth of official SDKs and ecosystem integrations, and how fast a developer or agent can self-serve a working key. Note that several "OCR" tools differ sharply on accessibility: hyperscalers and the newer API-first startups offer instant self-serve keys with public pricing, while some incumbents remain sales-gated.

AWS Textract logo
Highest rated
AWS Textract

Cloud-native OCR for AWS workloads

87.7
ABI
A
VerdictWhat is the best document ai & ocr API?The short answer, plus which provider wins on each axis.Read the verdict →

What is the best Document AI & OCR API?

#ProviderDocumentationReliabilityEcosystemAccessibilityABIFree
1AWS Textract logoAWS TextractAmazon Web Services8295957887.7AYes
2Google Document AI logoGoogle Document AIGoogle Cloud8593907586.3AYes
3Azure AI Document Intelligence logoAzure AI Document IntelligenceMicrosoft Azure8492888086.2AYes
4Mindee logoMindeeMindee8272768278.0BYes
5Unstructured logoUnstructuredUnstructured Technologies8070748577.0BYes
6Nanonets logoNanonetsNanonets7270727271.5CYes
7Reducto logoReductoReducto8068587670.7CYes

Table 1. Best Document AI & OCR APIs ranked by the APIbenchmarks Index. Specification columns are vendor-stated; ABI is computed per the published methodology.

Composite scores

AWS Textract
87.7
Google Document AI
86.3
Azure AI Document Intelligence
86.2
Mindee
78.0
Unstructured
77.0
Nanonets
71.5
Reducto
70.7
Scale 0–100. Highest in category: 87.7.

Figure 1. APIbenchmarks Index for Document AI & OCR APIs, bar length proportional to composite score; colour encodes letter grade.

Provider scorecards

AWS Textract logo
1. AWS TextractAABI 87.7 · Excellent

Battle-tested OCR and form/table/ID extraction wired into the entire AWS ecosystem with hyperscaler-grade scale and SDK reach.

Documentation & DX
82
Reliability
95
Ecosystem & SDKs
95
Accessibility
78
Google Document AI logo
2. Google Document AIAABI 86.3 · Excellent

Processor-based platform spanning OCR, layout parsing, prebuilt invoice/receipt models, and custom extraction, with $300 GCP trial credit.

Documentation & DX
85
Reliability
93
Ecosystem & SDKs
90
Accessibility
75
Azure AI Document Intelligence logo
3. Azure AI Document IntelligenceAABI 86.2 · Excellent

Formerly Form Recognizer; strong prebuilt and custom models with a genuinely free F0 tier and first-class .NET/Java/JS/Python SDKs.

Documentation & DX
84
Reliability
92
Ecosystem & SDKs
88
Accessibility
80
Mindee logo
4. MindeeBABI 78.0 · Strong

Developer-focused IDP API with prebuilt invoice/receipt/ID models, async v2 inference, and native SDKs across six languages.

Documentation & DX
82
Reliability
72
Ecosystem & SDKs
76
Accessibility
82
Unstructured logo
5. UnstructuredBABI 77.0 · Strong

Open-source-rooted ingestion API that normalizes any document into LLM-ready chunks, with a generous free tier and Python-first tooling.

Documentation & DX
80
Reliability
70
Ecosystem & SDKs
74
Accessibility
85
Nanonets logo
6. NanonetsCABI 71.5 · Solid

Workflow-oriented IDP platform with trainable models and deep business-app integrations, but opaque block-based per-run pricing.

Documentation & DX
72
Reliability
70
Ecosystem & SDKs
72
Accessibility
72
Reducto logo
7. ReductoCABI 70.7 · Solid

AI-native agentic document platform tuned for RAG/LLM pipelines, with VLM enrichment and complexity-aware credit billing.

Documentation & DX
80
Reliability
68
Ecosystem & SDKs
58
Accessibility
76

Frequently asked questions

What is the best Document AI & OCR API?
By the APIbenchmarks Index, AWS Textract rates highest (ABI 87.7, grade A). Cloud-native OCR for AWS workloads The ABI weights documentation, reliability, ecosystem, and accessibility; price is reported separately, so the right pick still depends on your budget and workload.
Which document ai & ocr APIs have a free tier?
AWS Textract, Google Document AI, Azure AI Document Intelligence, Mindee, Unstructured, Nanonets, Reducto offer a free tier or trial credits.
How is the APIbenchmarks Index calculated?
The ABI is a weighted composite of four dimensions scored on absolute reference scales: documentation & DX (30%), reliability (25%), ecosystem & SDKs (25%), and accessibility (20%). Price is excluded from the composite because price units are not comparable across categories. The full formula is on the methodology page.

Popular comparisons

AWS Textract vs Google Document AIAWS Textract vs Azure AI Document IntelligenceAWS Textract vs MindeeGoogle Document AI vs Azure AI Document IntelligenceGoogle Document AI vs MindeeAzure AI Document Intelligence vs Mindee

References

  1. https://aws.amazon.com/textract/pricing/
  2. https://aws.amazon.com/textract/features/
  3. https://aws.amazon.com/textract/sla/
  4. https://www.g2.com/products/amazon-textract/reviews
  5. https://www.gartner.com/reviews/market/intelligent-document-processing-solutions/vendor/amazon-web-services/product/amazon-textract
  6. https://www.braincuber.com/blog/aws-textract-vs-google-document-ai-ocr-comparison
  7. https://sparkco.ai/blog/aws-textract-vs-azure-document-intelligence-a-deep-dive
  8. https://nanonets.com/blog/aws-textract-teardown-pros-cons-review/
  9. https://www.crosstab.io/articles/amazon-textract-review/
  10. https://cloud.google.com/document-ai/pricing
  11. https://cloud.google.com/document-ai
  12. https://cloud.google.com/document-ai/sla
  13. https://docs.cloud.google.com/document-ai/docs/processors-list
  14. https://www.g2.com/products/google-cloud-document-ai/reviews
  15. https://www.g2.com/products/google-cloud-document-ai/reviews?qs=pros-and-cons
  16. https://www.businesswaretech.com/blog/research-best-ai-services-for-automatic-invoice-processing
  17. https://parsli.co/compare/google-document-ai
  18. https://azure.microsoft.com/en-us/pricing/details/document-intelligence/
  19. https://azure.microsoft.com/en-us/products/ai-foundry/tools/document-intelligence
  20. https://learn.microsoft.com/en-us/azure/ai-services/document-intelligence/model-overview?view=doc-intel-4.0.0
  21. https://learn.microsoft.com/en-us/azure/ai-services/document-intelligence/how-to-guides/use-sdk-rest-api?view=doc-intel-4.0.0
  22. https://www.azure.cn/en-us/support/sla/cognitive-services/
  23. https://www.g2.com/products/azure-ai-document-intelligence/reviews
  24. https://www.g2.com/products/azure-ai-document-intelligence/reviews?qs=pros-and-cons
  25. https://www.gartner.com/reviews/market/intelligent-document-processing-solutions/vendor/microsoft/product/azure-ai-document-ntelligence
  26. https://learn.microsoft.com/en-us/azure/ai-services/document-intelligence/service-limits?view=doc-intel-4.0.0
  27. https://www.mindee.com/pricing
  28. https://www.mindee.com/
  29. https://www.g2.com/products/mindee/reviews
  30. https://www.capterra.com/p/255574/Mindee/reviews/
  31. https://github.com/mindee/doctr
  32. https://github.com/api-evangelist/mindee
  33. https://www.veryfi.com/ai-insights/invoice-ocr-competitors-veryfi/
  34. https://www.mindee.com/product/invoice-ocr-api
  35. https://unstructured.io/pricing
  36. https://unstructured.io/benchmarks
  37. https://github.com/Unstructured-IO/unstructured
  38. https://docs.unstructured.io/api-reference/api-services/overview
  39. https://unstructured.io/blog/introducing-unstructured-serverless-api
  40. https://news.ycombinator.com/item?id=41072632
  41. https://news.ycombinator.com/item?id=39445424
  42. https://www.businesswire.com/news/home/20240314620374/en/Unstructured-Raises-$40M-Series-B-From-Menlo-Ventures-Databricks-Ventures-IBM-Ventures-and-NVIDIA-to-Make-Enterprise-Data-LLM-ready
  43. https://docs.unstructured.io/ui/enriching/generative-ocr
  44. https://nanonets.com/pricing
  45. https://apidocs.nanonets.com/docs/intro/
  46. https://nanonets.com/ocr-api
  47. https://github.com/NanoNets/nanonets-python-client
  48. https://www.capterra.com/p/193484/Nanonets-OCR/reviews/
  49. https://www.g2.com/products/nanonets/reviews
  50. https://learnopencv.com/nanonets-ocr-s/
  51. https://github.com/NanoNets/api-docs/blob/main/nanonets_openapi_3.1.0.yaml
  52. https://reducto.ai/pricing
  53. https://reducto.ai/blog/rd-tablebench
  54. https://reducto.ai/blog/sota-table-parsing
  55. https://github.com/reductoai/rd-tablebench
  56. https://llms.reducto.ai/document-parser-comparison
  57. https://a16z.com/announcement/investing-in-reducto/
  58. https://www.extend.ai/resources/extend-vs-reducto-document-ai-comparison
  59. https://www.prnewswire.com/news-releases/reducto-raises-75m-series-b-to-define-the-future-of-ai-document-intelligence-302581462.html
  60. https://jxnl.co/writing/2025/09/11/why-most-document-parsing-sucks-adit-reducto/