OpenLLM is an open-source project that allows developers to run open-source language models (LLMs) as OpenAI-compatible APIs. It provides a built-in chat UI, state-of-the-art inference backends, and a simplified workflow for creating enterprise-grade cloud deployments. OpenLLM supports a wide range of LLMs and allows users to add custom models. The project aims to make LLMs more accessible and easy to use.