Observed source change · Anthropic
Claude prompt cache policy and minimums documentation changed
Published documentation; runtime behavior and legal interpretation not established.
Last unchanged check: 2026-10-21T14:40:09Z
First changed check: 2026-10-21T16:45:10Z
Before
new() { Role = Role.User, Content = "Analyze the major themes in 'Pride and Prejudice'." } new() { Role = Role.User, Content = "My name is Alex. I work on machine learning." }, new() { Role = Role.Assistant, new() { Role = Role.User, Content = "What did I say I work on?" } Messages = [new() { Role = Role.User, Content = "warmup" }], Messages = [new() { Role = Role.User, Content = "warmup" }], Messages = [new() { Role = Role.User, Content = userMessage }], new() { Role = …After
new UserMessageParam { Content = "Analyze the major themes in 'Pride and Prejudice'." } new UserMessageParam { Content = "My name is Alex. I work on machine learning." }, new AssistantMessageParam { new UserMessageParam { Content = "What did I say I work on?" } Messages = [new UserMessageParam { Content = "warmup" }], Messages = [new UserMessageParam { Content = "warmup" }], Messages = [new UserMessageParam { Content = userMessage }], new UserMessageParam { new UserMessageParam { Content = new List<ContentBlockParam> }, }, new AssistantMessageParam { new UserMessageParam { …Capture provenance and limitations
Raw before SHA-256: 65cb644a86d9ce9c8f3adad15af656c33db58a719b14ba7e899614b22616cd9f
Raw after SHA-256: 9e6f93274ddc0ef1a8915a420e68e1d89e9767c0b0f121402ca26cbc5f9e4548
Full source responses are retained in the private evidence archive. Public excerpts show changed wording and may be truncated. The observed interval does not establish the vendor’s exact edit time. Hashes identify retained bytes; they are not an independent timestamp certificate.
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