Route subagents to Haiku and scope rules by path — a benchmarked 77–91% Claude Code cost cut

Firecrawl·medium signal

Firecrawl benchmarked 12 token techniques and found the biggest wins come from model routing (send isolated subagent work to Haiku instead of Opus) and path-scoped rules that load directory-specific context only when you touch that directory, rather than a monolithic CLAUDE.md. One prompt-shaping technique hit 91.9% context reduction with no measured quality regression.