I'm building a document extraction workflow and need a model API

Absolutely — I can help with that.

For a document extraction workflow, you typically want a model API that can:

1. Ingest documents
   PDFs, images, scans, Office docs, etc.

2. Extract structured data
   Return JSON fields like:

   • invoice number
   • date
   • vendor
   • totals
   • line items
   • signatures
   • key clauses

3. Handle OCR + layout awareness
   Especially for scanned docs, tables, and multi-column layouts.

4. Support validation / schema output
   So the model returns consistent structured data instead of free text.

Good API patterns

Option A: Use a multimodal LLM API directly

Best if you want:

• flexible extraction
• custom document types
• handling messy or varied layouts

You send:

• the document text, or
• images/pages, or
• OCR output plus page layout hints

And ask for:

• JSON output matching a schema

Option B: OCR + model extraction pipeline

Best if you need:

• higher accuracy on scanned docs
• table-heavy docs
• cost control at scale

Typical flow:

1. OCR the document
2. Send OCR text + layout metadata to the model
3. Ask for structured extraction

Option C: Specialized document AI service

Best if you mainly need:

• invoices, receipts, IDs, forms
• field extraction out of the box

These often include:

• prebuilt templates
• confidence scores
• table parsing

What your API should support

If you’re designing or choosing one, look for:

• JSON/schema mode
• batch processing
• file upload
• page-level outputs
• confidence scores
• table extraction
• citations or source spans
• OCR fallback
• async jobs for large docs

Example extraction request

You might structure a prompt like:

{
  "document_type": "invoice",
  "fields": [
    "invoice_number",
    "invoice_date",
    "vendor_name",
    "subtotal",
    "tax",
    "total",
    "line_items"
  ],
  "output_format": "json"
}

Example output

{
  "invoice_number": "INV-10482",
  "invoice_date": "2026-01-14",
  "vendor_name": "Acme Supplies Inc.",
  "subtotal": 1200.00,
  "tax": 96.00,
  "total": 1296.00,
  "line_items": [
    {
      "description": "Printer paper",
      "quantity": 10,
      "unit_price": 12.00,
      "amount": 120.00
    }
  ]
}

If you want, I can help with any of these next:

• recommend a specific API/provider
• design the JSON schema
• write a Python/JavaScript API example
• build a document extraction prompt
• design a production architecture for high-volume docs

If you tell me:

1. what document types you have,
2. whether they’re scanned or digital, and
3. your preferred stack,

I can suggest the best API approach.