Claude Code Separates Executors From Advisors

Model selection is becoming a routing decision, not a permanent quality dial: spend frontier intelligence on judgment and cheaper tokens on repetition.

• –A fixed executor preserves stable prompt prefixes, improving cache reuse and reducing latency in long agentic sessions. [Prompt caching docs](https://platform.claude.com/docs/en/build-with-claude/prompt-caching)
• –Anthropic’s advisor tool lets the executor consult a stronger model for plans or course corrections while the executor continues handling tools and user-facing output. [Advisor strategy](https://claude.com/blog/the-advisor-strategy)
• –Subagents remain the better choice for independent or specialized work that benefits from isolated context and different model settings.
• –The pattern is not automatic magic: advisor calls add cost, so teams should cap consultations and validate quality on their own workloads.