> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # AnthropicCacheControlTtl ## Example Usage ```typescript theme={null} import { AnthropicCacheControlTtl } from "@openrouter/sdk/models"; let value: AnthropicCacheControlTtl = "5m"; // Open enum: unrecognized values are captured as Unrecognized ``` ## Values ```typescript theme={null} "5m" | "1h" | Unrecognized ```