Identifies which processing tier produced a result.
'ocr'
'handwriting'
'document-ai'
'embedding'
'cloud-vision'
Identifies which processing tier produced a result.
'ocr'— Tier 1: PaddleOCR or Tesseract.js text extraction'handwriting'— Tier 2a: TrOCR handwriting recognition'document-ai'— Tier 2b: Florence-2 document understanding'embedding'— Tier 2c: CLIP image embedding generation'cloud-vision'— Tier 3: Cloud vision LLM (GPT-4o, Claude, etc.)