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How AI agents spend tokens on large, multi-repo codebases — and what changes when they query one shared index instead of rediscovering structure every session.

June 30, 2026
Why AI Coding Agents Burn Tokens on Large Codebases, and How a Shared Index Cuts the Cost

On a large, multi-repository codebase, an AI coding agent spends most of its token budget rediscovering structure it has no memory of. Here is the mechanism behind that cost, and why querying a pre-built index changes the math.
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