European AI Gateway for accessing 700+ models through one API
Scalable self-hosted real-time messaging and state sync platform
Stage
Not given
Established
Founded
2023
2023
Based in
SE
CY
Pricing model
Freemium
Open source
Pricing
Free models available at signup with no credit card required. Gateway plan: 3% platform fee on credits. Control Plane plan: 5.5% platform fee on credits plus flat-rate per-check billing for LLM checks. Token rates are provider rates with no markup. No minimums, no lock-in. Enterprise plans include v
Open source version is free. Centrifugo PRO available with flat licensing (no per-connection or per-message fees) and requires contacting sales for a quote.
Key features
Access to 700+ models from 50+ providers
Spend limits and cost controls by project, role, user or key
Zero data retention by default with customizable trace storage
OpenAI SDK compatible with streaming and tool calling
Model routing with fallback options
LLM checks for flagging, redacting, blocking or scoring
Management API for infrastructure-as-code
SSO/SAML and role-based access control
JevMan Pac-Man benchmark for decision models
AI Roundtable for multi-model reasoning comparison
WebSocket, HTTP-streaming, SSE, WebTransport, and gRPC transports
Channel history and message recovery
Flexible authentication and authorization
State synchronization with transactional consistency
Connection event proxying to backend
Online presence detection for users
Efficient binary Protobuf protocol
Resumable streams and transport fallback for AI applications
What makes it different
No token markup: provider rates passed through unchanged
Zero data retention by default with flexible options
Fully OpenAI SDK compatible for easy migration
Pay-as-you-go with no minimums or lock-in
Set up once and works forever with no ongoing configuration needed
Handles millions of concurrent connections with minimal hardware
Self-hosted so messages and data never leave your infrastructure
No per-connection or per-message billing
Works in production at scale with proven reliability
Opper
Centrifugo