Prompt caching multipliers
Catalog row in Vendor License Rules · Cited
- Kind
- Counting
- Statement
- Pricing (as published on 2026-09-26): 5-minute cache write 1.25x base input price; 1-hour cache write 2x; cache read (hit) 0.1x, except 0.025x on Claude Fable 5.1 and Claude Mythos 5.1 and 0.05x on Claude Opus 5.5. "These multipliers stack with other pricing modifiers, including the Batch API discount and data residency."
- Applies when
- Pricing API workloads that reuse prompt prefixes.
- Applies to
- Claude API.
- Related metrics