Unverified50% confidenceFactExact time
The first prompt cache request is still billed at full price, and cache writes are sometimes priced separately.
1
Sources
50%
Confidence
Long-term
Relevance
10/18/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedCached input refers to pre-storing the same context on the server side so that subsequent requests can reuse the cache without repeated computation, and is billed at a lower price.76% similarUnverifiedPrompt cache hit determination is based on an exact match of "prefix + cache key", where the cache key includes some request metadata; cache writes are typically billed at 1.25 times the base input price.75% similarUnverifiedPrompt caching usually has an expiration period, requires rewriting after content changes, and the cache discount applies only to the input side, while output tokens are still billed at the standard rate.74% similarUnverifiedIn frameworks where prompt caching is already enabled, the unit price for cache hits is only 1/50 that of new input, so cost savings are limited when the volume of judgments is not large.72% similar
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