Add Voice to AI Agents in 100 Lines with ElevenLabs
minchoi · x · 2026-07-30
The author shares a tutorial on using ElevenLabs Speech Engine to add real-time voice capabilities to existing AI agents. The core advantage is that it requires no replatforming—your existing LLM, RAG, and architecture remain untouched.
Implementation Steps:
- Install @elevenlabs/elevenlabs-js and @elevenlabs/react SDKs.
- Tell ElevenLabs where your agent lives (supports local testing via ngrok).
- Wrap your existing LLM call. Send transcripts to OpenAI, Claude, etc., and stream the reply back.
- Mint a short-lived WebRTC token server-side to keep secrets safe.
- Start the call in the browser using conversation.startSession.
The engine combines speech-to-text, turn detection, interruption handling, and text-to-speech into a single pipeline. It supports 70+ languages and is optimized for ultra-low latency in real-world conversations.
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