The ebook titled "Ultimate Guide to Using LLMs with Speech Recognition," published on January 7, 2025, provides comprehensive insights into integrating Large Language Models (LLMs) with speech-to-text (STT) technologies to create advanced voice applications. Drawing on extensive experience with audio-first companies and expert interviews, it offers strategies for selecting between open-source and proprietary models, optimizing LLM performance, and evaluating vendors. The guide also details key metrics to assess STT systems' success, aiming to assist businesses in navigating the complexities of combining these technologies effectively.