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GPTZZZ vs Zarx

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

GPTZZZ compared with Zarx
DetailGPTZZZ logo GPTZZZZarx logo Zarx
What it doesAI API relay station providing access to multiple AI models with unified billing EU-resident inference API for open-weight language models
StageStartup MVP
Founded2026 Not given
Based inNot given ES
Pricing modelPaid Contact for pricing
PricingPay-as-you-go with Alipay top-ups. Minimum charge ¥10, exchange rate ¥1 = $1 credit. Pricing varies by model and group: GPT models from $0.02 input / $0.12 output per million tokens in the 0.1x group; Claude models from $0.50 input / $3.00 output per million tokens in the 0.4x group; Grok models ava Not given
Key features
  • Group-based API key management with separate billing multipliers from 0.1x to 0.7x
  • Unified balance across multiple AI model providers
  • OpenAI-compatible endpoint requiring only Base URL change
  • Support for Claude Messages interface for Claude models
  • Anytime balance withdrawal with no fees
  • Base64 image input support
  • 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
  • Lowest pricing multipliers in the market at 0.1x baseline
  • Unified billing across different model providers with single balance
  • No withdrawal fees for unused balance
  • Simple integration with only Base URL change needed
  • 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
Community votes00
DR (Domain Rating by Ahrefs)71 −1 (down) since last check5 no change since last check
Trust Flow (Majestic)90
Citation Flow (Majestic)2813
Referring domains (Majestic)521

5 details filled in for both companies.

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