Verified65% confidenceFactExact time
Prompt caching means the identical prefix shared by multiple requests is fully billed and processed only on the first request, and subsequent requests hitting the cache can lower the input token price and reduce latency; but caching cannot shorten the total context length, and long histories still occupy the context window and raise latency.
3
Sources
65%
Confidence
Long-term
Relevance
10/15/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedSome vendors have introduced context caching (Prompt Caching) features, charging lower fees for repeatedly occurring long prefixes.77% similarUnverifiedCached 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.77% similarUnverifiedPrompt caching allows vendors to cache the same repeated prefix in an Agent loop, with subsequent calls billed at the cache read price, in this example $0.20 versus $4 for input, 20 times cheaper.74% similarUnverifiedThe prompt caching mechanism allows already-processed input prefixes to be cached server-side, and if the next request starts with the same prefix, it is read at a price far below normal input; common cache TTLs are 5 minutes and 1 hour, and writing to the cache costs extra.73% similarUnverifiedCaching the results of repeated requests (such as recurring email classification patterns) reduces the number of API calls and lowers costs.71% similar
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