December 15, 2025 | ElevenLabs Documentation

Real-time conversation monitoring: Enterprise users can now monitor agent conversations in real-time via WebSocket connection at /v1/convai/conversations/{id}/monitor. Features include cached conversation history, selective event streaming, and control commands (end call, barge-in, human takeover toggle, send messages).
Hinglish language support: Added hinglish_mode configuration option for agents. When enabled and the agent’s language is Hindi, responses will be in Hinglish (Hindi-English mix).
Dynamic variables in voicemail messages: Voicemail detection messages now support dynamic variable substitution, enabling personalized messages when voicemail is detected.
Localized widget terms and conditions: Chat widget terms and conditions can now be localized per language, configured through language presets.
Widget conversation mode toggle: Added conversation_mode_toggle_enabled option to widget configuration for controlling conversation mode switching.
Batch call retry tracking: Added retry_count field to batch call status responses for tracking retry attempts.

Quality preset credit costs: Quality preset descriptions now include credit cost information: high (+20%), ultra (+50%), and ultra_lossless (+100%).

Simplified phone number configuration: Replaced whatsapp_business_account_id with whatsapp_phone_number_id in batch calling and conversation info schemas for simpler WhatsApp integration.

@elevenlabs/react@0.12.3 - Localized chat terms and conditions and fixed Scribe audio format
@elevenlabs/client@0.12.2 - Localized chat terms and conditions and fixed Scribe audio format
@elevenlabs/react-native@0.5.6 - Added TTS speed parameter override and fixed startSession infinite loop in useEffect hooks
@elevenlabs/react@0.12.2 - Fixed WebSocket closure code, fixed useConversation race condition, added shadow host event dispatching, and expanded language support
@elevenlabs/client@0.12.1 - Fixed WebSocket closure code, fixed useConversation race condition, added shadow host event dispatching, and expanded language support

v0.7.1 - Fixed agent_tool_request event handling and corrected expects_response default value

New Endpoints

List knowledge base documents
- Added parent_folder_id query parameter (string) for filtering by parent folder
- Added ancestor_folder_id query parameter (string) for filtering by ancestor folder
- Added folders_first query parameter (boolean) for sorting folders before documents
Document response schemas
- Added folder document type
- Added folder_parent_id field (string, optional)
- Added folder_path field (string, optional)
- Added children_count field (integer, for folders)
- Added GetKnowledgeBaseFolderResponseModel schema
- Added GetKnowledgeBaseSummaryFolderResponseModel schema
RAG index endpoints
- Added cannot_index_folder status to RAGIndexStatus enum
- Added batch request/response models for RAG index operations

Create agent, Update agent, Get agent
- Added hinglish_mode (boolean, default false) to agent configuration
- Added hinglish_mode to workflow override schemas (nullable boolean)
Widget configuration endpoints
- Added conversation_mode_toggle_enabled (boolean, default false) to widget settings
Batch calling endpoints
- Added retry_count (integer, default 0) to batch call response models
Conversation token model
- Added token_requester_user_id (string, nullable) for identifying token requester

Submit batch calling
- Replaced whatsapp_business_account_id with whatsapp_phone_number_id (string, nullable, optional)
Conversation info schemas
- Replaced whatsapp_business_account_id with whatsapp_phone_number_id in WhatsAppConversationInfo

All TTS endpoints with quality preset
- Updated quality_preset descriptions to include credit cost percentages

Resource type enum
- Added convai_agent_drafts to WorkspaceResourceType enum