ZeroGPT vs Cobalynx

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

ZeroGPT compared with Cobalynx
Detail	ZeroGPT	Cobalynx
What it does	AI content detector and writing toolkit for identifying AI-generated text and improving writing quality	Free AI detector with published error rates
Stage	Not given	Not given
Founded	Not given	Not given
Based in	US	IT
Pricing model	Freemium	Free
Pricing	Free plan available with no credit card required. Personal and Business/EDU plans with monthly or annual billing options. Annual plans offer 40% discount. Enterprise plans available with custom solutions. API available on pay-as-you-go basis.	No payment required. Free tier allows 10 certification requests per day per IP.
Key features	PDF report generation Plagiarism detection across billions of sources	Calibrated probability scores with published error rates Inconclusive verdicts for borderline cases Minimum 150 word requirement Content Credentials (C2PA) file checking Document metadata analysis Free human-text certification with downloadable PDF badge No signup or account required Private processing with no data storage
What makes it different	Detects AI from 35+ LLM families including GPT-6, Gemini, and Claude Supports all languages with consistent accuracy User data never used for AI model training	Published error rates with raw counts and confidence intervals Designed to minimize false accusations rather than maximize detections Measures ESL (non-native English) writer accuracy separately Transparent verdicts: reports inconclusive when unsure instead of guessing
Community votes	0	0
DR (Domain Rating by Ahrefs)	79 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	33	2
Citation Flow (Majestic)	40	13
Referring domains (Majestic)	6289	1

6 details filled in for both companies.

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