How to compress context sent to Claude

Four ways to ship less tokens without losing output quality

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What's going on

Most context gets re-sent verbatim. These four techniques — summary pre-pass, selective retrieval, diff-only history, and session caching — cut context tokens 40-70%.

What to do about it

Three patterns dominate the waste on most Claude workloads: (1) context re-sending; (2) retry loops on validation failures; (3) agent-chain re-reads. AIUsage's audit identifies which is eating your bill and projects what you'd save — no signup required for the number.

The fastest path to your real number: paste your last 30 days of Anthropic usage at aiusage.ai. Under two minutes. If your expected delta is under 40%, the audit says so and you walk.
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