On-demand GPUs and AI model APIs on one prepaid balance
EU-resident inference API for open-weight language models
Stage
MVP
MVP
Founded
Not given
Not given
Based in
Not given
ES
Pricing model
Paid
Contact for pricing
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.
Not given
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
OpenAI-compatible Responses and Chat Completions endpoints
Streaming with Server-Sent Events
Function calling and tool use
Structured JSON output with schema validation
Audio transcription with file and live WebSocket modes
Text-to-speech with built-in and customizable voices
Speech-to-speech translation
Time series forecasting up to 1,000 periods
Per-key usage tracking and limits
Servers owned and operated by NPAW in EU
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
Data residency in EU with no US sub-processor in the data path
OpenAI-compatible API so teams can keep existing integrations
Three capability levels—Z Ultra, Z Pro, Z Fast—on the same API
Operated by NPAW, which has run its own data infrastructure since 2008
ISO 27001, ISO 27701, ISO 42001 and ENS High certified
CloudGPU
Zarx