LeMUR, an API for building Language Model (LLM) applications on spoken data such as meetings and phone calls, has been made available for everyone to use. LeMUR offers a full "AI stack" in a single API, enabling developers to reason over their spoken data with just a few lines of code. The API can summarize meetings, answer questions about call content, generate action items from virtual meetings, and more. LeMUR is designed to be flexible, allowing users to define their own tasks and prompts with a customizable endpoint.