LiveKit voice agent with AssemblyAI Universal-3 Pro Streaming
Blog post from AssemblyAI
The guide provides a detailed overview of building a production-ready voice agent using LiveKit and AssemblyAI's Universal-3 Pro Streaming model, which is noted for its low latency and advanced features like neural turn detection and anti-hallucination. It emphasizes the model's superior 307ms P50 speech-to-text latency, which is crucial for creating a natural-feeling voice agent, and compares it favorably against competitors such as Deepgram Nova-3. The guide explains the technical setup and configuration required, including the use of Python, API keys, and LiveKit Cloud. It highlights key features like real-time speaker diarization and domain-specific vocabulary prompting, which enhance recognition accuracy without needing session restarts. Additionally, it provides insights into adjusting turn detection parameters for different environments and conversational speeds and discusses the flexibility of swapping components within the LiveKit plugin system. The guide also mentions the deployment process using Fly.io and offers resources for further exploration of the AssemblyAI streaming capabilities.