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ai-tooling

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Jul 23, 2026 · 9 min read
claude-codetoken-usageprompt-cachingllm-costsai-tooling

The Harness Tax

A `claude -p` call bills for its own furniture before your prompt even loads, and the fix that buys 4.4x on a quick call turns out to be almost worthless on a long agentic run, because they're two different taxes.

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