
The European AI gateway for agents, with 300+ models behind one key
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1 / 8Opper AI is a European AI gateway that gives agents and apps one API key for more than 300 models. The service is hosted in the EU, with about half of its 30-plus providers running inference in Europe and one EU sub-processor covering every model. The API is drop-in compatible with the OpenAI, Anthropic and Google SDKs, so switching is a base URL change. A control plane adds routing, PII masking, per-team spend caps and audit trails, and prompts are not stored by default. Opper charges no markup on tokens and a 3% fee on credit top-ups. A free tool lets anyone put one question to up to 50 models at a time, with structured answers and an optional debate round.
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