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Vision LLMs vs. OCR for PDF Q&A: OCR Still Wins on Cost and Accuracy
60radar
For complex PDF Q&A, vision LLMs are pricier and less accurate than OCR pipelines. Stick with OCR for better cost-performance and reliability.
- The native vision LLM approach was the most expensive at
$0.2552/query and ranked 5th in accuracy (52.0%) out of six methods tested. - Vision models underperformed on chart- and table-heavy pages, the very area they were expected to excel in. Premium OCR handled these better.
- The vision LLM had a 7% intrinsic failure rate that persisted after retries, while OCR-based pipelines showed 0% failure, indicating higher reliability.
Source: www.reddit.com/r/MachineLearning/comments/1tm0cqg/visionRead original →