> ## 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. # STTRequestResponseFormat Output format. "json" (default) returns \{ text, usage }. "verbose\_json" additionally returns task, language, duration, and segment-level timestamps; only supported by OpenAI-compatible providers. ## Example Usage ```go theme={null} import ( "github.com/OpenRouterTeam/go-sdk/models/components" ) value := components.STTRequestResponseFormatJSON // Open enum: custom values can be created with a direct type cast custom := components.STTRequestResponseFormat("custom_value") ``` ## Values | Name | Value | | ------------------------------------- | ------------- | | `STTRequestResponseFormatJSON` | json | | `STTRequestResponseFormatVerboseJSON` | verbose\_json |