LLM Gateway streamlines the development of voice AI applications by offering a single API that integrates transcription and large language model (LLM) processing, eliminating the need for multiple vendor integrations. This unified platform allows access to leading models from OpenAI, Anthropic, and Google, facilitating tasks such as transcription, sentiment analysis, and summarization within one consistent interface. By consolidating these processes, LLM Gateway reduces technical fragmentation, lowers maintenance costs, and enables rapid deployment of new models, thus providing increased flexibility and efficiency for engineering teams. The platform supports various real-world applications, including medical documentation, call center analytics, and legal intake optimization, by offering context-aware processing and model selection strategies that match specific task requirements. This consolidation improves operational reliability and allows teams to focus more on developing unique features rather than managing complex integrations, offering a competitive edge in the fast-paced voice AI landscape.