The Token Economics of Long Documents

By C.W. Jameson · Published 20 August 2025 · Last reviewed 20 August 2025

A 500-page PDF is 250,000 tokens. At Opus pricing, reading it costs $3.75 per pass. Caching it costs $0.75 after the first.

How long documents should be chunked, cached, and routed for cost efficiency in production systems.