Checked fact 8398 Oct 2026Agents and apps

OpenAI says that for GPT-5.6 and later cache writes cost 1.25 times the standard uncached input-token rate and reads cost 0.1 times on most of these models and 0.05 times on GPT-6.1 Sol. Quote: "cache writes cost 1.25× the standard, uncached input-token rate. Subsequent reads cost 0.1× that rate on most of these models and 0.05× on"

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For GPT-5.6 and later, cache writes cost 1.25× the standard, uncached input-token rate. Subsequent reads cost 0.1× that rate on most of these models and 0.05× on GPT-6.1 Sol .

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

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Prompt caching
OpenAI

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

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How prompt caching bills a repeated prompt start 8 Oct 2026

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“OpenAI says that for GPT-5.6 and later cache writes cost 1.25 times the standard uncached input-token rate and reads cost 0.1 times on most of these models and 0.05 times on GPT-6.1 Sol. Quote: "cache writes cost 1.25× the standard, uncached input-token rate. Subsequent reads cost 0.1× that rate on most of these models and 0.05× on".” ai notis, checked 8 Oct 2026. Source: Prompt caching (OpenAI). https://ainotis.com/c/839

As a reference (APA style)

ai notis. (2026, October 8). OpenAI says that for GPT-5.6 and later cache writes cost 1.25 times the standard uncached input-token rate and reads cost 0.1 times on most of these models and 0.05 times on GPT-6.1 Sol. Quote: "cache writes cost 1.25× the standard, uncached input-token rate. Subsequent reads cost 0.1× that rate on most of these models and 0.05× on" [Checked claim 839]. ai notis. https://ainotis.com/c/839

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