ElevenLabs shipped a significant platform update on May 13, adding new LLM options, knowledge base improvements, and workspace controls across its Voice Agents builder and API.

What Happened

The May 13 update brings GPT-5.4-mini and GPT-5.4-nano as selectable LLMs inside the ElevenLabs Voice Agents builder. Alongside the model additions, the platform added document-level RAG chunk listing, in-place document editing without re-uploading files, and SMS conversation support via Twilio integration.

Workspace-level improvements include an API request analytics endpoint with filtering and time range queries, IP allowlisting for service account API keys with CIDR range support, and two new workspace permissions: conversational_ai_read and voice_design. Agent versioning is now enabled by default.

Why It Matters

For creators and developers building branded voice experiences, the GPT-5.4 integrations reduce the infrastructure overhead of running high-quality voice agents. Document-level RAG means voice agents can now answer questions grounded in specific documents, updated in-place rather than re-ingested from scratch.

The IP allowlisting and workspace analytics additions signal ElevenLabs is maturing its platform for team and agency use, not just individual developers. As covered in the ElevenLabs $500M ARR deep dive, the platform has been scaling toward enterprise creator workflows throughout 2026.

Key Details

  • New LLMs in Voice Agents: gpt-5.4-mini, gpt-5.4-nano, and dated variants
  • RAG: knowledge base chunk listing API for grounded agent responses
  • In-place editing: rename and update knowledge base documents without re-uploading
  • SMS: Twilio integration for voice agent conversations
  • Analytics: workspace-level API request analytics with filtering and date range queries
  • Security: IP allowlisting for service account API keys (CIDR support)
  • Audio: Voice Changer WAV output at 8,000-48,000 Hz sample rates
  • Deprecation: POST /v1/text-to-voice/create-previews removed; use the Design a Voice workflow instead

What to Do Next

Developers running ElevenLabs Voice Agents should update to the May 13 SDK release (Python and JavaScript v2.47.0) to access the new RAG chunk listing and workspace analytics APIs. Creators using the Voice Changer should note the expanded WAV output format options. Check the ElevenLabs pricing page to confirm which plan tier includes workspace analytics and IP allowlisting.