LLMFly AI is a unified API gateway that puts leading AI models behind one OpenAI-compatible endpoint. Instead of maintaining separate integrations for OpenAI, Anthropic, Google, and xAI, developers point their existing OpenAI SDK client at LLMFly AI, choose a model ID from the catalog, and start calling — GPT, Claude, Gemini, Grok, and more. Key features include per-app, per-environment API keys that keep dev and production separate, transparent pricing with input/output/cache rates shown before you send traffic, and usage history that shows exactly what each request consumed. There is no need to rebuild integrations for every provider: change the base URL, keep the client you already use, and compare pricing across models up front. Built for everyday API work — code editors, agents, automation scripts, and backend services.