Opper AI

Opper AI is an EU-hosted, ISO 27001 certified gateway that exposes 700+ AI models through one OpenAI-compatible API, with spend caps, model allowlists, routing, failover and zero data retention options.

Opper AI is a unified API gateway that gives developers access to more than 700 AI models through a single key and a single endpoint. The platform is hosted in Stockholm and positions itself around European data residency, with routes that stay inside the EU, one data processing agreement covering every model, and certification against ISO/IEC 27001:2022. By default it stores no prompts or responses, and many pay-as-you-go routes run with zero data retention. The practical setup is deliberately small. Opper exposes a compatibility endpoint, so existing code written for the OpenAI, Anthropic or Gemini SDKs only needs a new base URL and an Opper key. The same approach works with the Vercel AI SDK and LangChain, and with coding agents such as Claude Code, OpenCode, Cursor and Codex, which can be pointed at Opper and then switched to a different model without changing the app. A command line launcher can start some of these agents already wired up, and a "skills" page lets a coding agent read the instructions and configure the integration itself. Beyond simple proxying, the product includes a control plane for rules that apply to every call: monthly spend limits, data retention settings, model allowlists by location or zero-retention policy, input and output checks for items like PII and secrets, and routing order such as cheapest first or fastest first. An LLM router lets teams build dynamic routes with classifiers and fallback chains that are called like any other model. Reliability is handled through automatic failover across several providers per model, with measured uptime published per route. Opper suits engineering teams that ship AI features or agents and have compliance obligations, particularly in Europe, as well as developers who want one bill and one key instead of many provider accounts. Compared with general multi-model gateways, its distinguishing angle is EU hosting and governance tooling. Billing is pay-as-you-go, and free models work without a card, which makes a first test inexpensive.