Prompt caching facts

How prompt caching behaves for each model on each platform: whether it caches, the smallest prompt that gets cached, how long the cache lasts, and what reads and writes cost.

Not promised means the provider gives no guarantee on how long the cache lasts.

exact: the provider promises this lifetime
at least: promised for at least this long
not promised: no guarantee from the provider

Amazon Bedrock

32 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, automatic	unknown	5 minexact	yes	$0.0825	$0
Yes, automatic	unknown	5 minexact	yes	$0.015	$0
Yes, automatic	up to 54	5 minexact1 hournot promised	yes	$0.00875	$0
Yes, automatic	unknown	5 minexact	yes	$0.625	—
Yes, automatic	unknown	5 minexact	yes	$0.2	$0
Yes, on request	unknown	5 min—	unknown	$0.08	$1
Yes, on request	unknown	5 min—	unknown	$0.3	$3.75
Yes, on request	unknown	5 min—	unknown	$0.3	$3.75
Yes, on request	1,024	5 minexact1 hourexact	yes	$1.1	5 min $13.75 1 hour $22
Yes, on request	unknown	5 min—1 hour—	unknown	$0.275	5 min $13.75 1 hour $22
Yes, on request	4,096	5 minexact1 hourexact	yes	$0.11	5 min $1.375 1 hour $2.2
Yes, on request	unknown	5 min—1 hour—	unknown	$0.011	5 min $0.1375 1 hour $0.22
Yes, on request	unknown	5 min—1 hour—	unknown	$1.1	5 min $13.75 1 hour $22
Yes, on request	unknown	5 min—1 hour—	unknown	$0.275	5 min $13.75 1 hour $22
Yes, on request	unknown	5 min—1 hour—	unknown	$2.75	5 min $34.375 1 hour $55
Yes, on request	1,024	5 minexact1 hourexact	yes	$1.5	$18.75
Yes, on request	1,024	5 minexact1 hourexact	yes	$1.5	$18.75
Yes, on request	4,096	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
Yes, on request	4,096	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
Yes, on request	unknown	5 min—1 hour—	unknown	$0.22	5 min $5.5 1 hour $8.8
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.3	$3.75
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.33	5 min $4.125 1 hour $6.6
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.33	5 min $4.125 1 hour $6.6
Yes, on request	1,024	5 minexact1 hourexact	yes	$0.22	5 min $2.75 1 hour $4.4
Yes, on request	unknown	5 min—1 hour—	unknown	$0.11	5 min $2.75 1 hour $4.4
Yes, on request	1,024	30 minat least	unknown	—	—
Yes, on request	1,024	30 minat least	unknown	—	—
Yes, on request	1,024	30 minat least	unknown	—	—
Yes, automatic	unknown	30 min—	unknown	$1.1	$13.75

Azure

50 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, on request	unknown	5 min—1 hour—	unknown	$1	5 min $12.5 1 hour $20
Yes, on request	unknown	5 min—1 hour—	unknown	$0.25	5 min $12.5 1 hour $20
Yes, on request	unknown	5 min—1 hour—	unknown	$0.1	5 min $1.25 1 hour $2
Yes, on request	unknown	5 min—1 hour—	unknown	$0.01	5 min $0.125 1 hour $0.2
Yes, on request	unknown	5 min—1 hour—	unknown	$1	5 min $12.5 1 hour $20
Yes, on request	unknown	5 min—1 hour—	unknown	$0.25	5 min $12.5 1 hour $20
Yes, on request	unknown	5 min—1 hour—	unknown	$0.5	5 min $6.25 1 hour $10
Yes, on request	unknown	5 min—1 hour—	unknown	$0.5	5 min $6.25 1 hour $10
Yes, on request	unknown	5 min—1 hour—	unknown	$0.5	5 min $6.25 1 hour $10
Yes, on request	unknown	5 min—1 hour—	unknown	$0.5	5 min $6.25 1 hour $10
Yes, on request	unknown	5 min—1 hour—	unknown	$0.5	5 min $6.25 1 hour $10
Yes, on request	unknown	5 min—1 hour—	unknown	$0.2	5 min $5 1 hour $8
Yes, on request	unknown	5 min—1 hour—	unknown	$0.3	5 min $3.75 1 hour $6
Yes, on request	unknown	5 min—1 hour—	unknown	$0.3	5 min $3.75 1 hour $6
Yes, on request	unknown	5 min—1 hour—	unknown	$0.2	5 min $2.5 1 hour $4
Yes, on request	unknown	5 min—1 hour—	unknown	$0.1	5 min $2.5 1 hour $4
Yes, automatic	unknown	idle—	unknown	$0.413	—
Yes, automatic	unknown	idle—	unknown	$0.55	—
Yes, automatic	unknown	idle—	unknown	$0.11	—
Yes, automatic	unknown	idle—	unknown	$0.028	—
Yes, automatic	unknown	idle—	unknown	$37.5	—
Yes, automatic	1,040	30 minnot promisedimplicitnot promised24 hoursnot promised	unknown	$1.375	—
Yes, automatic	unknown	idle—	unknown	$0.083	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.5	—
Yes, automatic	unknown	idle—	unknown	$0.025	—
Yes, automatic	unknown	idle—	unknown	$0.005	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.125	—
Yes, automatic	unknown	idle—	unknown	$0.025	—
Yes, automatic	unknown	idle—	unknown	$0.175	—
Yes, automatic	unknown	idle—	unknown	$0.175	—
Yes, automatic	unknown	idle—	unknown	$0.175	—
Yes, automatic	unknown	idle—	unknown	$0.175	—
Yes, automatic	unknown	idle—	unknown	$0.175	—
Yes, automatic	unknown	idle—	unknown	$0.25	—
Yes, automatic	unknown	idle—	unknown	$0.075	—
Yes, automatic	unknown	idle—	unknown	$0.02	—
Yes, automatic	unknown	idle—	unknown	$0.5	—
Yes, automatic	unknown	30 min—	unknown	$0.5	—
Yes, automatic	unknown	idle—	unknown	$8.25	—
Yes, automatic	unknown	idle—	unknown	$0.605	—
Yes, automatic	unknown	idle—	unknown	$8.25	—
Yes, automatic	unknown	idle—	unknown	$0.55	—
Yes, automatic	unknown	idle—	unknown	$2.5	—
Yes, automatic	unknown	idle—	unknown	$0.605	—
Yes, automatic	unknown	idle—	unknown	$0.303	—

Google Vertex

40 models

Model	Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
	Yes, on request	512	5 minexact1 hourexact	yes	$1.1	5 min $13.75 1 hour $22
	Yes, on request	unknown	5 min—1 hour—	unknown	$0.275	5 min $13.75 1 hour $22
	Yes, on request	4,096	5 minexact1 hourexact	yes	$0.11	5 min $1.375 1 hour $2.2
	Yes, on request	unknown	5 min—1 hour—	unknown	$0.011	5 min $0.1375 1 hour $0.22
	Yes, on request	unknown	5 min—1 hour—	unknown	$1.1	5 min $13.75 1 hour $22
	Yes, on request	unknown	5 min—1 hour—	unknown	$0.275	5 min $13.75 1 hour $22
	Yes, on request	1,024	5 minexact1 hourexact	yes	$1.5	5 min $18.75 1 hour $30
	Yes, on request	1,024	5 minexact1 hourexact	yes	$1.5	5 min $18.75 1 hour $30
	Yes, on request	4,096	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
	Yes, on request	4,096	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
	Yes, on request	2,048	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
	Yes, on request	1,024	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
	Yes, on request	512	5 minexact1 hourexact	yes	$0.55	5 min $6.875 1 hour $11
	Yes, on request	unknown	5 min—1 hour—	unknown	$0.22	5 min $5.5 1 hour $8.8
	Yes, on request	1,024	5 minexact1 hourexact	yes	$0.3	5 min $3.75 1 hour $6
	Yes, on request	1,024	5 minexact1 hourexact	yes	$0.33	5 min $4.125 1 hour $6.6
	Yes, on request	1,024	5 minexact1 hourexact	yes	$0.33	5 min $4.125 1 hour $6.6
	Yes, on request	1,024	5 minexact1 hourexact	yes	$0.22	5 min $2.75 1 hour $4.4
	Yes, on request	unknown	5 min—1 hour—	unknown	$0.11	5 min $2.75 1 hour $4.4
	Yes, automatic or on request	unknown	explicit—implicit—	unknown	$0.004	—
	Yes, automatic or on request	unknown	explicit—implicit—	unknown	$0.078	—
	Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	$0.037	—
	Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	$0.018	—
	Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	$0.037	—
	Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	$0.01	—
	Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	$0.125	—
	Yes, automatic or on request	unknown	explicit—implicit—	unknown	$0.05	—
	Yes, automatic or on request	6,144	explicitexactimplicitnot promised	unknown	—	—
	Yes, automatic or on request	unknown	explicit—implicit—	unknown	$0.1	—
	Yes, automatic or on request	4,096	explicitexactimplicitnot promised	no	$0.027	—
We measured caching from 21,949 tokens; the official docs say 4,096.
	Yes, automatic or on request	6,144	explicitexactimplicitnot promised	unknown	—	—
	Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	$0.165	—
	Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	$0.033	—
	Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	$0.165	—
	Yes, automatic or on request	unknown	explicit—	unknown	$0.165	—
	Yes, automatic or on request	unknown	explicit—	unknown	$0.165	—
	Yes, automatic or on request	unknown	explicit—	unknown	$0.165	—
	Yes, automatic or on request	unknown	explicit—implicit—	unknown	$0.22	—
	Yes, automatic or on request	unknown	explicit—	unknown	$0.22	—
	Yes, automatic or on request	unknown	explicit—	unknown	$0.15	—

Anthropic

19 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, on request	2,048	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	512	5 minexact1 hourexact	yes	—	—
Yes, on request	4,096	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	4,096	5 minexact1 hourexact	yes	—	—
Yes, on request	4,096	5 minexact1 hourexact	yes	—	—
Yes, on request	4,096	5 minexact1 hourexact	yes	—	—
Yes, on request	2,048	5 minexact1 hourexact	yes	—	—
Yes, on request	2,048	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	512	5 minexact1 hourexact	yes	—	—
Yes, on request	512	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—
Yes, on request	1,024	5 minexact1 hourexact	yes	—	—

OpenAI

42 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised24 hoursnot promised	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	30 minat least	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—
Yes, automatic	1,024	idlenot promised	unknown	—	—

Google AI Studio

11 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, on request	unknown	explicitexact	unknown	—	—
Yes, on request	unknown	explicitexact	unknown	—	—
Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	2,048	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—
Yes, automatic or on request	4,096	explicitexactimplicitnot promised	unknown	—	—

xAI

9 models

Caches?	Min tokens	Lifetimes	Resets	Read $/1M	Write $/1M
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—
Yes, automatic	unknown	implicitnot promised	unknown	—	—

Click a row for every number. Prices are USD per million tokens.

We measure these daily and do our best to keep them accurate. Always confirm with the provider’s official documentation.

Official docs: AnthropicOpenAIGoogle GeminiVertex AIAWS BedrockAzure

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