GPT-4o vs PaddleOCR.

GPT-5.4 costs money but thinks. PaddleOCR is free but extracts. I tested both to find out when the thinking is worth paying for. Same invoice. Different approaches.

§ 01 · Side-by-side

The numbers, row by row.

Metric	PaddleOCR	GPT-5.4
Time	4.85s	7.58s
Confidence	99.6%	N/A
Character errors	0	0
Table structure	Lost	Preserved
Cost per image	$0	~$0.01
Tokens used	N/A	943

Test invoice. 800x600 pixels, white background, standard fonts.

PaddleOCR output

Every character correct, but the table became a flat list of words.

INVOICE
Invoice #: INV-2025-001
Date: December 16, 2025
Bill To:
John Smith
123 Main Street
San Francisco, CA 94102
Description
Qty
Price
Total
Web Development Services
40
$150.00
$6,000.00
...

GPT-5.4 output

The table headers align with values — “Web Development Services” has Qty 40, Price $150.00, Total $6,000.00.

INVOICE
Invoice #: INV-2025-001
Date: December 16, 2025
Bill To:
John Smith
123 Main Street
San Francisco, CA 94102
Description                 Qty   Price         Total
Web Development Services    40    $150.00     $6,000.00
UI/UX Design                20    $125.00     $2,500.00
Server Hosting (Annual)      1     $480.00       $480.00
                            Subtotal:        $8,980.00
                            Tax (8.5%):       $763.30
                            Total:          $9,743.30

Get the full OCR comparison spreadsheet

30+ models × 8 benchmarks, accuracy + price per page. We email it and keep it current.

§ 02 · Pick by task

When to pick which.

Pay for GPT-5.4 when

Tables with complex layouts
Documents where you want to ask questions (“What’s the total?”)
Mixed content with forms, tables, and text
Small batches where $0.01/image is irrelevant

Stay on PaddleOCR when

100,000 documents = $1,000 with GPT-5.4, $0 with PaddleOCR
Privacy-sensitive documents that can’t leave your server
Consistent document formats where you can write regex
Batch processing where speed matters more than structure

The hybrid approach

Use PaddleOCR for bulk processing (cheap, fast)
Send complex or failed documents to GPT-5.4 (accurate, understands structure)
Extract with PaddleOCR, then ask GPT-5.4 questions about the text

This gives you 99% of documents at $0/each and 1% at $0.01/each.

§ 03 · Method

The code.

PaddleOCR

from paddleocr import PaddleOCR
ocr = PaddleOCR(lang='en')
result = ocr.predict('invoice.png')
for item in result:
    for text in item.get('rec_texts', []):
        print(text)

GPT-5.4

import base64

client = OpenAI()
with open('invoice.png', 'rb') as f:
    img = base64.b64encode(f.read()).decode()
response = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": [
        {"type": "text", "text": "Extract all text from this image."},
        {"type": "image_url", "image_url": {"url": f"data:image/png;base64,{img}"}}
    ]}]
)
print(response.choices[0].message.content)

§ 04 · Related

Adjacent comparisons.

PaddleOCR vs Tesseract comparison Docling vs MinerU comparison Tesseract vs EasyOCR comparison All OCR Vendors Comparison dots.ocr 3B — 88.41 composite Mistral OCR 3 — verified results Docling Tutorial: PDF to Markdown Best OCR for invoices

Get the full OCR comparison spreadsheet

30+ models × 8 benchmarks, accuracy + price per page. We email it and keep it current.