GPTZero: review, pricing, data and alternatives

What is GPTZero?

GPTZero helps people examine how texts were written. It estimates the presence of AI-generated text, flags suspicious passages, searches for similarities with published texts, and reconstructs writing stages.

According to its documentation, GPTZero lets you:

• estimate the presence of AI-generated text
• flag suspicious passages
• search for similarities with published texts
• reconstruct the stages of writing

We file it under AI content detection, the category of tools to check whether content is AI-made. The category lists 9 verified tools on this site.

The publisher is GPTZero LLC, groupe Superhuman, based in United States. The service launched in 2023, which gives it some track record.

Who is it for?

It is mostly useful to these profiles: teachers, content writers, and recruiters and HR. The need it covers is simple to state: check whether content is AI-made.

GPTZero is a good candidate if:

• you want to try before paying
• you plan to connect it to your tools or automations through its API

Before deciding, run a trial on a real task and measure the time saved: it is the only criterion that really counts.

How much does GPTZero cost?

Pricing model: freemium (limited free use, then paid). A free plan is offered, usually limited in volume or features.

The entry price is not shown publicly: you have to contact the publisher or create an account to see it.

To estimate what the same work would cost done directly with an AI model, use our API price calculator. Prices change often: always check the official site before subscribing.

Data and privacy

According to its privacy policy, data is processed in the United States.

For professional use, check that a data processing agreement (DPA) is offered, and do not send customers' personal data or confidential documents without one.

Exporting your content: yes (details on the official site). Being able to get your data back makes switching tools easier later.

Three habits apply to every AI tool:

• turn off the use of your content for training if the option exists
• use a work account separate from your personal account
• review everything the tool produces before publishing or sending it

Platforms, languages and API

GPTZero runs on: web browser, browser extension, and API.

Interface languages: English.

A public API lets you call it from your own programs or an automation tool, and plug it into an AI agent.

How we scored it

Our 68/100 score does not judge output quality: it measures what can be publicly verified about access to the tool, its openness and how far the publisher can be trusted.

The full calculation is explained on our method page.

Comparison with alternatives

GPTZero against other tools in the aI content detection category: