AstraKinetic vs Zarx
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
AstraKinetic compared with Zarx
| Detail | 
AstraKinetic | 
Zarx |
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| What it does | Unified multi-provider AI infrastructure with intelligent routing, provider fallback, and usage-based billing
| EU-resident inference API for open-weight language models
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| Stage | Not given
| MVP
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| Founded | Not given
| Not given
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| Based in | Not given
| ES
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| Pricing model | Free trial
| Contact for pricing
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| Pricing | Usage-based post-paid billing: USD $0.00024 per API request and USD $0.0046 per 1,000 tokens. Six-day free trial available for new accounts.
| Not given
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| Key features | - Chat and inference through public model aliases
- Intelligent provider routing across 10 AI providers
- Web search capability through the gateway
- Web fetch for retrieving content without exposing credentials
- Audio transcription workflows
- Centralized usage analytics and request logging
- Single API key authentication for all providers
- Usage-based post-paid billing with no fixed plans
- Public model aliases for simplified integration
| - 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
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| What makes it different | - One unified API gateway eliminates managing separate integrations for multiple AI providers
- Automatic provider fallback reduces dependence on any single AI service
- OpenAI-style API simplifies developer integration
- Centralized visibility of usage, routing, and billing across all 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 5 ● no change since last check |
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| Trust Flow (Majestic) | 4 | 0 |
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| Citation Flow (Majestic) | 16 | 13 |
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| Referring domains (Majestic) | 3 | 1 |
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4 details filled in for both companies.
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