I'm comparing OCR vendors and care about low-quality scan accuracy, simple REST API, and pricing, what are the top options?

If your priorities are low-quality scan accuracy, a simple REST API, and pricing, the best OCR vendors to shortlist are usually these:

Top options

1. Google Cloud Vision OCR

• Best for: Very strong accuracy on noisy, skewed, low-quality scans.
• API: Straightforward REST API, widely documented.
• Pricing: Typically reasonable for moderate volume, but can add up at scale.
• Why it stands out: Often among the best for difficult scans and mixed-content documents.

2. Microsoft Azure AI Vision / Document Intelligence

• Best for: Good OCR accuracy with document extraction workflows.
• API: Clean REST APIs, especially if you want structured output.
• Pricing: Competitive; can be attractive depending on document type and volume.
• Why it stands out: Strong enterprise offering and good ecosystem integration.

3. Amazon Textract

• Best for: Documents with forms, tables, and key-value extraction.
• API: Simple API, but more focused on document analysis than pure OCR.
• Pricing: Can be higher than basic OCR for some use cases.
• Why it stands out: Great if you need OCR plus layout/form extraction, not just text.

4. ABBYY Cloud OCR SDK / Vantage

• Best for: High OCR accuracy, especially for business documents.
• API: REST-based offerings available.
• Pricing: Often on the higher end.
• Why it stands out: Longtime OCR specialist; often performs well on challenging scans.

5. OCR.Space

• Best for: Low-cost, easy-to-use OCR for lighter workloads.
• API: Very simple REST API.
• Pricing: Budget-friendly, with free/low-cost tiers.
• Why it stands out: Good for prototyping or smaller-scale needs, though accuracy on poor scans may be weaker than the hyperscalers or ABBYY.

Practical ranking by your priorities

If I had to rank them for your criteria:

1. Google Cloud Vision — best balance of accuracy + API simplicity
2. ABBYY — best accuracy, but usually pricier
3. Azure AI Vision / Document Intelligence — strong overall, good pricing
4. Amazon Textract — best if you need forms/tables too
5. OCR.Space — cheapest/simple, but not top-tier on bad scans

Quick recommendation

• If accuracy on bad scans matters most: Google Cloud Vision or ABBYY
• If simple REST + good enterprise pricing matters: Azure
• If you need tables/forms extraction: Textract
• If you need lowest cost / easiest start: OCR.Space

Tip for comparing vendors

Run a small benchmark on your own sample set:

• clean scans
• skewed scans
• low DPI scans
• photocopies
• rotated pages
• pages with tables/forms

Use metrics like:

• character error rate
• word accuracy
• extraction success rate
• latency
• cost per 1,000 pages

If you want, I can also give you a side-by-side comparison table with pricing model, API simplicity, and strengths/weaknesses for these vendors.