# Conversational AI API documentation (/en/api-reference/api-ref/conversational-ai/documentation-versions)

> For AI agents: see the complete documentation index at [llms.txt](/llms.txt).

- [Main — Voice Agent API reference](/en/api-reference/api-ref/conversational-ai)
- [Preview — Conversational AI Platform API reference](/en/api-reference/api-ref/conversational-ai/platform)

This entry restores the same documentation selection as the Conversational AI guides. Direct API reference links remain pinned to their version.