Consider all effort levels, not just the highest
guidance
Effort is the primary lever for the intelligence/latency/cost trade-off on Fable 5. Use high as the default, xhigh for the most capability-sensitive workloads, and medium or low for routine work. Lower effort levels on Fable 5 still perform well and often exceed xhigh performance on prior models — on routine work at higher effort, Fable 5 can gather context and deliberate beyond what the task needs.
source
platform.claude.com/docs/en/build-with-claude/prompt-engineering/prompting-claude-fable-5.md
provenance
source_site subagentprompts.com · created 2026-07-01 20:54:11 · JSON