THIS IS ACTUAL F*CKING GOLD Anthropic just quietly dropped one of the best setups for Claude Code The rule: orchestrate Sonnet, Haiku and Opus 5.5 simultaneously, locking every model into the exact lane it dominates Opus-grade intelligence on critical architectural calls, zero Opus burn on routine terminal iterations Launch Claude Code with this flag pair: claude --model sonnet --advisor opus how the workload divides: → Sonnet 5.5 leads the main session and cuts the actual code → Haiku 5.5 swarms repos, greps call sites, and parses docs concurrently → Opus 5.5 remains on standby as advisor for high-leverage checkpoints → you eliminate token waste on work that never required frontier reasoning Opus only gets triggered on three specific events: → right before locking an architectural plan → the second an identical error hits twice → right before marking a complex task complete Sonnet builds · Haiku explores · Opus reviews JEV engineering applies the exact same logic one layer