Checked fact 8288 Oct 2026Agents and apps

Anthropic says shorter prompts cannot be cached, even if marked with cache_control. Quote: "Shorter prompts cannot be cached, even if marked with"

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The exact words it rests on

Shorter prompts cannot be cached, even if marked with cache_control . Any requests to cache fewer than this number of tokens will be processed without caching, and no error is returned.

What the source said when we opened it, on 8 Oct 2026.

The source

Prompt caching
Anthropic

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Checked

Checked by the notis newsroom on 8 Oct 2026, against the source above.

In the story

How prompt caching bills a repeated prompt start 8 Oct 2026

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“Anthropic says shorter prompts cannot be cached, even if marked with cache_control. Quote: "Shorter prompts cannot be cached, even if marked with".” ai notis, checked 8 Oct 2026. Source: Prompt caching (Anthropic). https://ainotis.com/c/828

As a reference (APA style)

ai notis. (2026, October 8). Anthropic says shorter prompts cannot be cached, even if marked with cache_control. Quote: "Shorter prompts cannot be cached, even if marked with" [Checked claim 828]. ai notis. https://ainotis.com/c/828

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