為降低成本，Anthropic 將昂貴的 Claude Fable 5 轉變為管理者
anthropic 建議讓 fable 5 僅負責規劃，由 sonnet 5 執行任務，在保持 96% 性能的同時將成本降低至 46%，以對抗低價競爭。
anthropic released 'advisor' and 'orchestrator' patterns that repurpose the expensive claude fable 5 as a planning manager, leaving execution to cheaper sonnet 5 models. tests on swe-bench pro show the advisor pattern hits 92% of fable 5's performance at 63% of the cost, while the orchestrator pattern on browsecomp achieves 96% performance at 46% of the cost. this hierarchy separates high-level reasoning from execution, using distinct caches to avoid duplicate processing. the guidance arrives as open-source models and cheaper rivals like gpt-5.6 sol exert pricing pressure on frontier models.