On-demand GPUs and AI model APIs on one prepaid balance
Scalable self-hosted real-time messaging and state sync platform
Stage
MVP
Established
Founded
Not given
2023
Based in
Not given
CY
Pricing model
Paid
Open source
Pricing
GPU rental: $0.15/hr (RTX 2080) to $1.79/hr (H800). Model API calls: Claude Opus 5.5 input $2.00 / output $10.00 per 1M tokens. First top-up of $10 or more earns a $5 bonus.
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
Per-minute GPU billing with no subscription
OpenAI-compatible API endpoint
2-minute GPU deployment
One-click template deployment
Multiple payment methods
Access to Claude, DeepSeek, Qwen, Llama models
No egress charges
Balance never expires
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
One balance covers both GPU rental and model API calls
Unused GPU minutes return to your balance when you destroy the instance
Designed for developers worldwide without credit card or phone requirements
Consumer GPU cards like RTX 5090 cost less than US cloud providers
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
CloudGPU
Centrifugo