AI inference & GPU cloud
Zarx
EU-resident inference API for open-weight language models
- 0community votes
- 5DR by Ahrefs no change since last check
Ahrefs Domain Rating signal 12 Nov 2026, signal shifted 3 Nov 2026.
OpenAI-compatible inference API serving open-weight language models on servers owned and operated by NPAW in the EU under EU law.
What it is
Zarx is an inference API for open-weight language models served exclusively on servers that NPAW owns and operates in the EU. It provides three levels of capability—Z Ultra, Z Pro and Z Fast—plus transcription, speech synthesis, translation and forecasting services, all processed under EU law with no US sub-processor in the data path.
The API is OpenAI-compatible, so teams can point official SDKs at Zarx by changing the base URL. It supports streaming, function calling, structured JSON output and per-key usage tracking. The service is designed for teams that need inference on servers they can locate on a map and place under specific jurisdiction, such as banks, telcos and public bodies in Europe.
Zarx is operated by NPAW, a Barcelona-based video analytics company that has run its own data infrastructure since 2008. The platform is currently in early access, available by invitation to European teams.
Systems
- 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
Pricing
Pricing model: Contact for pricing
Want to see what Zarx does next? Follow them for milestones, new products and stories by email.
Zarx metrics
Signal readout for zarx.ai: Ahrefs Domain Rating and Majestic link signals, arrows for the change since the last scan.
- 5 Domain Rating no change since last check
- 0 Trust Flow no change since last check
- 13 Citation Flow no change since last check
- 1 Referring domains no change since last check
- 150 External backlinks no change since last check
Ahrefs Domain Rating signal 12 Nov 2026, signal shifted 3 Nov 2026. Majestic signal 3 Nov 2026, signal shifted 3 Nov 2026. Link signals from Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
Zarx domain signal
Show the signal details
Public RDAP record, last read 13 Nov 2026, 10:34 UTC.
- Domain age 2 months
- Registered
- Expires
- Registrar GoDaddy.com, LLC
- DNSSEC Not signed
Zarx post-launch signal
The record for Zarx after its launch on Nexora Launch (3 November 2026), from the readings we keep.
- 5 Domain Rating (Ahrefs) no change since launch
at launch: 5 (3 Nov 2026); latest: 12 Nov 2026 - 0 Trust Flow (Majestic)
first measured 3 Nov 2026 - 1 Referring domains (Majestic)
first measured 3 Nov 2026
Day 9 since launch. Next receipt: day 30, 3 Dec 2026. A change here is a reading, not a claim about its cause; lots of things move these figures. Anything we do not measure is not shown.
Got a launch coming up?
Plan your launch with our free playbook, from preparing your listing to choosing more launch directories.
Quick answers
- Where is Zarx inference processed?
- Zarx processes inference on GPUs that NPAW owns and operates in the Barcelona area of Spain, with API entry on NPAW hardware in Haarlem, Netherlands. Both are operated under EU law with no US sub-processor in the data path.
- Is Zarx OpenAI-compatible?
- Yes, Zarx is OpenAI-compatible. Teams can point the official OpenAI SDKs at Zarx by changing the base URL, and requests and responses keep the OpenAI shapes. The Responses and Chat Completions endpoints, streaming, function calling, structured JSON output and OpenAI-shaped errors are all supported.
- Does Zarx keep data after processing requests?
- No, Zarx keeps nothing after the response. There is no server-side deduplication, so retries run the request again and teams should deduplicate on their side.
- How does NPAW ensure data security and compliance?
- NPAW is certified ISO 27001, ISO 27701, ISO 42001 and ENS High (Spain's national security scheme). It owns and operates all servers, runs data infrastructure since 2008 with demanding customers, and has no US sub-processor in the inference data path, ensuring GDPR compliance.
Zarx has a free listing. The owner can unlock the full profile with a paid launch for $5:
- Founder story (locked)
- Milestones (locked)
- Demo video (locked)
- Dofollow website link (locked)
Also on the frontier
-
Rank 1: BitsRun
Deploy any open model from Ollama or Hugging Face as a private, OpenAI-compatible API
AI inference & GPU cloudUnited States
-
DR 0 no change since last check 0 votes. Log in to send Anona Compute a vote -
Rank 3: Dory
Persistent Linux computers for AI agents, from about $0.03 an hour
DR 0 no change since last check 0 votes. Log in to send Dory a vote -
DR 12 +2 (up) since last check 0 votes. Log in to send condense a vote