AI API
Opper AI
A unified AI gateway providing access to 300+ leading models through one EU-hosted, GDPR-compliant API with an OpenAI SDK-compatible interface.
Opper AI
What is Opper AI?
Opper AI is a European AI gateway that aggregates 300+ language, image, voice, and video models into a single API, offering intelligent routing, observability, compliance, and agent support.
Opper AI vs Similar AI Tools
| Pricing Model | Free, Freemium | Free, Freemium | Free, Free Trial, Custom Pricing | Free, Freemium |
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How to use Opper AI?
- 1Sign up for an account and generate an API key.
- 2Add credits to your wallet or bring your own provider keys.
- 3Use the OpenAI SDK with baseURL https://api.opper.ai/v3/compat and specify models as provider/model (e.g., anthropic/claude-sonnet-4-5).
- 4Optionally use the Agent CLI to run coding agents like Claude Code, Codex, or OpenCode on Opper's gateway.
Opper AI Key Features
- Unified access to 300+ AI models via one API
- OpenAI SDK compatible endpoint
- EU-hosted and GDPR-compliant infrastructure
- Intelligent routing across providers and regions
- Observability with full tracing and analytics
- AI agent support with CLI and SDK
- Built-in compliance and governance (PII masking, audit trails, budget caps)
- Bring your own provider keys or use Opper credits
Opper AI Use Cases
- Build and orchestrate AI agents with multi-model support
- Deploy production applications requiring access to various LLMs
- Ensure AI compliance and data residency for European organizations
- Rapidly switch between models without rewriting integrations
- Monitor and optimize AI spending and performance
Opper AI Pricing & Free Credits
Opper AI currently operates on a Free, Freemium model.
Free TierFree Credits
Free Tier
$0
Get started with free credits to test models and features.
Paid Plans
Pay-as-you-go
Variable
Pay per token usage. A 3% fee applies on credit purchases. Bring your own provider keys also supported.
Opper AI Pros & Cons
Pros
- Access 300+ models through a single API
- EU-hosted and GDPR-compliant, ideal for European companies
- OpenAI SDK compatible, easy migration
- Supports agents, observability, and governance
- Pay-as-you-go with free credits to start
Cons
- Pricing not fully transparent without account
- 3% fee on credit purchases may be a hidden cost
- Limited free tier credits
What is Opper AI best for?
- Developers needing multi-model access with EU compliance
- Teams building AI agents and applications
- Organizations requiring GDPR-compliant inference