Opper.ai

Opper.ai is a unified API gateway that gives developers access to over 300 AI models from providers like OpenAI, Anthropic, Google, and Meta through a single endpoint. It works as a drop-in replacement for the OpenAI SDK, requiring only a change to the base URL while maintaining full compatibility. This means developers can switch between different AI models without rewriting their code, simply by changing the model parameter in their API calls.

The platform stands out by offering EU-hosted infrastructure with GDPR compliance, making it particularly valuable for European companies concerned about data residency. It includes an Agent CLI that lets developers launch popular coding agents like Claude Code, Codex, and OpenClaw through the same gateway. The service operates on a pay-as-you-go pricing model with a 3% gateway fee on top of provider costs, and offers enterprise features like budget caps, audit trails, and PII masking.

Opper.ai is ideal for development teams building AI applications that need flexibility across multiple model providers while maintaining compliance and observability. It serves companies like Ping Payments and GetTested.io that require reliable AI infrastructure without vendor lock-in, particularly those operating in regulated markets where data residency and GDPR compliance are critical requirements.