Clever AI Detector vs GPTZero

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

Clever AI Detector compared with GPTZero
Detail	Clever AI Detector	GPTZero
What it does	Free AI checker that estimates text probability as AI-generated with sentence-level analysis	AI detector that identifies content generated by large language models
Stage	Not given	Not given
Founded	Not given	2023
Based in	US	Not given
Pricing model	Free	Freemium
Pricing	$0 - completely free with no ads, paywall, or sign-up required. Unlimited checks with up to 10,000 words per check and sentence-level signals included.	Free tier for basic AI detection up to 10,000 characters. Professional plan available with pricing details on subscription page. API pricing available for developers.
Key features	AI probability score on 0-100 scale Sentence-level AI signal analysis Supports up to 10,000 words per check Detects text from ChatGPT, Gemini, Claude, DeepSeek and other AI models No sign-up required to use Check history saved for signed-in users Supports English and Spanish text Ranked #1 on GEDE Benchmark Minimum 80-word requirement for meaningful results No ads or paywall	AI detection with 99.9% accuracy Sentence-by-sentence highlighting of AI-generated text Writing Replay showing video proof of writing process Plagiarism detection Grammar checking and writing feedback Chrome extension for browser-based scanning Integration with Canvas and Google Classroom API for developer integration Detects multiple AI models including GPT-5, GPT-6, Gemini, and Claude AI Tutor for writing improvement
What makes it different	Reports probability instead of certainty, with sentence-level context for review Provides full results free with no paywalled features Ranked #1 on independent GEDE detection benchmark Allows unlimited checks with no usage limits Model-agnostic detection across all major AI platforms	99.9% accuracy rate verified by independent benchmarks from Penn State's AI Research Lab De-biased for ESL learners with only 1% false positive rate for non-native English writing Only detector with Writing Replay showing video proof of authentic writing process Trusted by over 10 million users and 100+ organizations globally
Community votes	0	0
DR (Domain Rating by Ahrefs)	75 no change since last check	81 no change since last check
Trust Flow (Majestic)	55	27
Citation Flow (Majestic)	48	43
Referring domains (Majestic)	2309	8387

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