Raw WebSocket voice agent with AssemblyAI Universal-3 Pro Streaming

Kelsey Foster's tutorial on creating a raw WebSocket voice agent using AssemblyAI's Universal-3 Pro Streaming model provides a hands-on approach to building a voice agent without the need for frameworks or abstraction layers, relying instead on basic components like a microphone and WebSockets. The guide walks users through setting up a pipeline that captures audio, converts it to PCM format, and sends it to AssemblyAI's WebSocket for processing, with responses generated using OpenAI's GPT-4o and text-to-speech conversion via ElevenLabs. Users are guided to configure turn detection settings to optimize response accuracy and speed, and the tutorial includes instructions for swapping components to explore alternatives such as Anthropic's Claude model or Cartesia for different performance needs. The tutorial also provides a quick start guide, prerequisites, and code snippets for users to build their own voice agent from scratch, emphasizing the simplicity and control offered by this approach.

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