Milliwatt Labs vs Zarx

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

Milliwatt Labs compared with Zarx
Detail	Milliwatt Labs	Zarx
What it does	AI measured in milliwatts, not megawatts	EU-resident inference API for open-weight language models
Stage	Not given	MVP
Founded	Not given	Not given
Based in	Not given	ES
Pricing model	Not given	Contact for pricing
Pricing	Not given	Not given
Key features	Runs on CPU without GPU Works offline without data center	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	AI that runs efficiently without GPU or data center Prioritizes privacy with offline processing Works on everyday hardware including microcontrollers Low power consumption measured in milliwatts	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 votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	5 no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	0	13
Referring domains (Majestic)	0	1

3 details filled in for both companies.