Prompt Caching

Claude Fable 5.1 maintains the same pricing as its predecessor but introduces a 75% drop in cache read costs and significantly lowers token usage per task. Here is a deep dive into what this means for agentic workflows and a copyable cost-per-task audit for your own stack.

Fable 5 pricing changes after July 7. A practical builder playbook for routing, caching, batch work, and usage-credit guardrails.