Forked Agent Cache-Sharing Economics

Description

Because sub-agents forked from a parent inherit byte-identical context, the first fork pays the full context cache-write cost and all subsequent forks pay only incremental cost for their individual continuations. At 5+ agents this yields ~4x cost reduction versus naive parallel calls and is the economic engine that makes /batch multi-agent orchestration viable at consumer tier pricing.

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Sources

src-20260409-5acfec94bd6e