This article compares four popular open‑source AI API gateway projects—One API, New API, Sub2API, and LiteLLM—detailing their stars, licenses, tech stacks, core strengths, ideal scenarios, shortfalls, and provides step‑by‑step deployment and usage instructions with security and compliance tips.
This article analyzes why direct SDK integration breaks down as LLM usage scales, outlines the governance problems a gateway solves—including unified interfaces, smart routing, failover, cost control, security, and observability—compares major open‑source and hosted gateway solutions, and provides step‑by‑step guidance for building, configuring, and operating a production‑grade LLM gateway.
This guide walks you through deploying the ChatGLM3‑6B large language model locally, adding the M3E vector embedding model, setting up One‑API and FastGPT with Docker, configuring environments, fine‑tuning with LoRA, and testing the integrated knowledge‑base Q&A system.
