Melious AI

Melious AI is a Saarbrücken-based platform (Melious AI GmbH, HRB 111794) that runs open-weight models on European infrastructure and exposes them through one OpenAI- and Anthropic-compatible API. Developers keep familiar SDKs while pointing the base URL at Melious; non-technical users can try the same models in a built-in chat with tools such as web search and code execution.

The stack stays on EU ground with European providers in the path: chat completions and streaming, tool calling, managed vectors for RAG, and transparent cost and emissions signals per request. Founded in 2025 by a four-person team from southwest Germany, Melious targets teams that want strong open models without leaving European jurisdiction.