> ## 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. # Speed Controls output generation speed. When set to `fast`, uses a higher-speed inference configuration at premium pricing. Defaults to `standard` when omitted. ## Example Usage ```python theme={null} from openrouter.components import Speed # Open enum: unrecognized values are captured as UnrecognizedStr value: Speed = "fast" ``` ## Values This is an open enum. Unrecognized values will not fail type checks. * `"fast"` * `"standard"`