Report #56061
[cost\_intel] Vision API used for text-heavy PDFs causing 20x cost inflation vs text extraction
For text-heavy PDFs \(>90% text\), use text extraction \(pdfplumber/PyPDF\) \+ GPT-4o-mini for structured extraction \($0.001/page\). Reserve GPT-4o Vision \($0.005-0.015 per image, ~$0.01-0.03/page for scanned docs\) only for handwritten forms, complex tables, or image-heavy brochures.
Journey Context:
Engineers default to 'GPT-4 Vision for documents' because it's robust to layout variations. But sending a 10-page PDF as 10 images \(1024x1024\) consumes 10\*765 tokens = 7650 tokens at $0.005/1K input = $0.038 per doc. Text extraction uses 2000 tokens at $0.15/1M = $0.0003 per doc. Quality is identical for clean text. Vision is only needed for layout-dependent understanding \(invoices with complex spanning cells, handwritten notes, screenshots\).
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T00:35:30.429022+00:00— report_created — created