EU-resident inference API for open-weight language models
One API for hundreds of AI models with unified billing and refundable balance
Stage
MVP
Startup
Founded
Not given
2026
Based in
ES
Not given
Pricing model
Contact for pricing
Paid
Pricing
Not given
Usage-based prepaid credits with transparent per-token pricing. Examples: GPT-6.1 Terra from $0.15 input / $0.75 output per 1M tokens; Claude Haiku 5.5 from $0.03/M input / $0.12/M output; Claude Opus 5.5 from $1.12/M input / $5.6/M output. First top-up receives 10% bonus credits (up to $200, minimu
Key features
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
One API for hundreds of models across OpenAI, Anthropic, Google, DeepSeek, MiniMax and more
OpenAI, Anthropic, and Vertex protocol compatibility
Multi-layer redundancy with automatic failover
Usage-based billing with no monthly minimum
Only successful requests are billed, failures are free
Refundable balance at any time
Visible rate limits per account
Support for text, image and video workloads
What makes it different
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
Reliability-first architecture with multi-layer redundancy across network, gateway and model layers
Transparent, refundable balance instead of locked-in subscriptions
Unified billing across all model families with one invoice
Health-aware routing across vendors with automatic failover
Zarx
RouteMux