Anthropic Recommends Fast-Track Setup for Claude Code: Pairing Haiku 5.5 with Opus 5.5 Oversight

Anthropic's Roundtable recommends a cost-conscious configuration for Claude Code: run Haiku 5.5 as your primary coding model and invoke Opus 5.5 as an advisor for critical decisions, balancing speed and oversight without running Opus throughout a session. The strategy leverages Claude Code's advisor tool, which lets the main executor model consult a stronger model at key moments—before committing to an approach, when stuck on recurring errors, or before declaring a task complete.