July 6, 2026

Music

Stream music with details: Added Stream music with details (POST /v1/music/detailed/stream) for SSE streaming of composed audio plus detailed metadata, including composition plan, song metadata, base64 audio chunks and optional word timestamps via with_timestamps.

ElevenAgents

Simulate conversation deprecation: Simulate conversation and Stream simulate conversation are deprecated in favor of Create test and Run tests on the agent.
Tool interruption mode: disable_interruptions is deprecated across agent tool and MCP server schemas. Use interruption_mode (ToolInterruptionMode: allow, disable_during_tool, disable_during_tool_and_turn) instead, with per-tool overrides via interruption_mode on tool override models.
Numeric evaluation scoring: Evaluation criteria schemas add optional scoring_mode (binary | numeric_uniform), optional max_score (integer) and optional score_instructions (string). Evaluation results add optional numeric score. Conversation analysis payloads add optional call_success_score and success_score.
Conversation reasoning: Transcript and history models add optional reasoning (ConversationReasoningModel) and transcript responses add optional reasoned (boolean). Agent prompt and LLM schemas add optional enable_reasoning_summary (boolean).
Conversation platform billing: Conversation-related models add optional platform_charge, platform_price and platform_usage with per-category breakdown via PlatformCategory and PlatformCategoryUsage.
Conversation cost metadata: Conversation history metadata adds required read-only cost_fiat (number, USD).
Unredacted webhook events: WebhookEventType adds unredacted_transcript and unredacted_audio for webhook subscriptions that need unredacted payloads.
Workflow phone transfer UUI limit: UUITransferConfig.data maximum length increases from 256 to 8192 characters for RFC 7433 User-to-User Information on SIP REFER transfers.

Speech Engine

Optional authentication bypass: JavaScript and Python SDK v2.56.0 add optional disableAuth / disable_auth on Speech Engine WebSocket clients. This is intended for integrations that protect the connection through other means, such as IP allowlisting or custom authentication headers, rather than API key authentication.

Workspaces

Professional voice slot tracking: Subscription-style models add optional professional_voice_slots_used_in_workspace alongside clarified group-wide professional_voice_slots_used for consolidated billing visibility.

ElevenCreative Studio

Caption styling: Caption style models add blur and border-radius fields. Enter and exit animation enums add slam, scale_down and slide_in.

SDK Releases

JavaScript SDK

v2.56.0 - Added optional disableAuth on Speech Engine WebSocket clients. Regenerated from the latest OpenAPI schema with music detailed streaming, tool interruption_mode, evaluation scoring modes, conversation reasoning and platform billing fields.

Python SDK

v2.56.0 - Added optional disable_auth on Speech Engine WebSocket clients. Regenerated from the latest OpenAPI schema with music detailed streaming, tool interruption_mode, evaluation scoring modes, conversation reasoning and platform billing fields.

CLI

@elevenlabs/cli@0.5.5 - Agent create and update requests are now sent as raw JSON to preserve configuration round-trip fidelity.

API

View API changes

New Endpoints

Music

Stream music with details - POST /v1/music/detailed/stream

Updated Endpoints

ElevenAgents

Simulate conversation - POST /v1/convai/agents/{agent_id}/simulate-conversation
- Marked deprecated; use Create test and Run tests on the agent instead
Stream simulate conversation - POST /v1/convai/agents/{agent_id}/simulate-conversation/stream
- Marked deprecated; use Create test and Run tests on the agent instead

Schema Changes

ElevenAgents

Tools and MCP
- Deprecated disable_interruptions in favor of interruption_mode (allow, disable_during_tool, disable_during_tool_and_turn)
- Added per-tool interruption_mode overrides on MCP and tool override models
Evaluation and analysis
- Added optional scoring_mode, max_score and score_instructions on evaluation criteria
- Added optional numeric score on evaluation results
- Added optional call_success_score and success_score on conversation analysis payloads
Transcripts and reasoning
- Added optional reasoning (ConversationReasoningModel) on transcript and history models
- Added optional reasoned (boolean) on transcript responses
- Added optional enable_reasoning_summary (boolean) on agent prompt and LLM schemas
Billing and metadata
- Added optional platform_charge, platform_price and platform_usage on conversation models
- Added required read-only cost_fiat (USD) on conversation history metadata
Webhooks
- Added unredacted_transcript and unredacted_audio to WebhookEventType
Workflows
- Increased UUITransferConfig.data max length from 256 to 8192 characters

Workspaces

Billing
- Added optional professional_voice_slots_used_in_workspace on subscription-style models

ElevenCreative Studio

Captions
- Added blur and border-radius fields on caption style models
- Added slam, scale_down and slide_in animation types