This guide provides a detailed walkthrough for setting up a Node.js WebSocket to utilize the Gladia live audio transcription API for real-time audio and video transcription, highlighting its application in creating subtitles, voice-activated assistants, and chatbots. It explains the core steps of real-time audio transcription, which involves capturing audio input, converting it into text using advanced algorithms, and displaying the text output. The guide emphasizes the advantages of using WebSocket for real-time applications, such as bi-directional communication, low latency, continuous streaming, and reduced network load, making it suitable for efficient audio data processing. The Gladia API, leveraging OpenAI's Whisper ASR, offers features like speaker diarization, word-level timestamps, and code-switching, reengineered to support real-time transcription with WebSocket. The setup process includes installing necessary Node.js dependencies, establishing a WebSocket connection with the Gladia API using an API key, sending audio data captured via a microphone, and handling transcription results and potential errors. The guide concludes with the importance of understanding the API setup to maximize its functionality in enterprise applications.