Copyleaks vs GPTZero (2026): Pricing, Features & Which to Choose

Who comes out ahead

Based only on the facts in our directory. The right pick still depends on the job you need done.

Lower starting price
Copyleaks
From $9.99/mo against from $15/mo
Free plan
Tie
Both have one
Higher rating
GPTZero
4.2 against 4.4
Same job?
Yes
Both are Writing tools

Side by side

Compared on	Copyleaks	GPTZero
Our rating	4.2	4.4Better
Starts at	$9.99/moBetter	$15/mo
Free plan	Yes	Yes
Category	Writing	Writing
Plans	From $9.99/mo	From $15/mo
Key features	Combined plagiarism and AI-content detection in one scan Multi-language support across dozens of languages Image-based AI detection alongside text scanning Credit-based usage model covering roughly 250 words per credit Browser extension and API for embedding checks into other workflows	AI-generated text detection across ChatGPT, Claude, Gemini, and other major LLMs Plagiarism detection bundled alongside AI detection in the same scan Hallucination detection that flags unsupported or fabricated claims in a document Chrome extension for scanning text without leaving the page it appears on API access for institutions screening submissions at scale
Pros	Combines plagiarism and AI-detection in one subscription instead of two tools Free tier gives enough monthly pages to test before paying Long operating history since 2015 in the plagiarism-detection space specifically	One of the most established and widely recognized names in AI detection, with a large existing user base Combines AI detection with plagiarism and hallucination checks in a single workflow Free tier is usable for individual, lower-volume checks without a subscription
Cons	Credit-based pricing gets confusing to estimate for high-volume users AI-detection accuracy claims face industry-wide skepticism, not unique to Copyleaks Enterprise and education pricing is hidden behind a sales quote	AI detection as a category carries an inherent false-positive risk on any tool, including this one Full-length document scanning beyond the free character limit requires a paid plan Recent acquisition introduces some uncertainty about how the standalone product evolves under Superhuman
Company	Copyleaks, founded 2015	GPTZero (Superhuman), founded 2023

Prices come from each vendor's pricing page, last checked 20260731. Check the vendor before you buy.

FAQ

Questions people ask

Is Copyleaks better than GPTZero?

In our reviews Copyleaks scores 4.2 and GPTZero scores 4.4. The better pick depends on the job. Copyleaks: Copyleaks scans text and images for plagiarism and AI-generated content across dozens of languages for schools and businesses. GPTZero: An AI detector built at Princeton that identifies LLM-generated text and now backs Superhuman's authenticity tools.

Which is cheaper, Copyleaks or GPTZero?

Copyleaks has the lower starting price: from $9.99/mo for Copyleaks and from $15/mo for GPTZero.

Do Copyleaks and GPTZero have free plans?

Yes, both have a free plan.

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