Different models parse PDFs differently, and long scanned files can bypass prompt caching

dotey · x · 2026-07-29

@lxfater The author says this was just a copy test, but the underlying point is that different models parse PDFs with different algorithms.

On very long scanned PDFs, some models may fall back to vision-based processing. In that case, tokens are already consumed before any question is asked, so prompt caching does not apply. The post is essentially a wording test, not a deeper technical claim.

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