Async Vs Individual Analysis of Documents in Textract

Hi Nithin,

When analyzing documents using Amazon Textract, pricing can differ significantly based on whether you process documents asynchronously (using StartDocumentTextDetection) or synchronously (using DetectDocumentText). Here's a breakdown of the differences:

1. Asynchronous Processing: Pricing: For asynchronous operations, Amazon Textract charges per page. As of now, the price is $0.0015 per page for text extraction. Process: You can send a single PDF or multi-page TIFF file containing up to 3,000 pages in one asynchronous request. This method is cost-effective for larger documents because you are charged per page regardless of the number of requests.
2. Synchronous Processing: Pricing: For synchronous operations, Amazon Textract charges per document. The cost is $0.01 per page for text extraction. Process: Each page is processed individually in a separate request. If you have 30 pages, each page would be considered a separate document, resulting in a higher cost compared to the asynchronous method. Cost Comparison: Asynchronous (30 pages in one request):

Cost: 30 pages * $0.0015/page = $0.045 Synchronous (30 separate requests for each page):

Cost: 30 pages * $0.01/page = $0.30 As you can see, asynchronous processing is significantly cheaper for a larger number of pages.

ref.: https://repost.aws/questions/QUs_ry60-zSPyq080EnwO3eA/which-textract-approach-is-faster-cheaper-better-for-1m-documents

ref2.: https://docs.aws.amazon.com/textract/latest/dg/API_DetectDocumentText.html

ref3: https://docs.aws.amazon.com/textract/latest/dg/sync.html

ref4: https://docs.aws.amazon.com/textract/latest/dg/async.html

ref5: https://aws.amazon.com/pt/textract/pricing/