It is only a matter of time before AI does much of the writing that you encounter on the internet, including emails, texts, and video subtitles. All of it will lack a disclaimer, however, and as machine learning models continue to improve their ability to behave like humans and conceal their own weaknesses, detecting AI-created content will be increasingly difficult. This is where the AI content detectors appear.
Content detectors that use AI are based on the same technology behind tools such as ChatGPT. Although they are trained primarily on the human text, they are also given images of the patterns on a dataset of artificial output, to learn to tell the difference.
Someone who is looking to find genuine and human-made content on the internet will get the best of it in AI content detectors. GPTZero is one of the best tools for AI content detection. In this detailed blog, we will learn about GPTZero and its alternatives.
What is GPTZero?
Chat GPTZero is the most popular AI detector that is trusted by many professionals around the globe. It scans to see whether a document has been composed by an AI writing tool (like ChatGPT). The GPTZero model has been trained to identify the presence of AI in lines and paragraphs. The platform was trained to identify some of the large language models, including ChatGPT, GPT4, LLaMa, Bard and other AI systems.
GPTZero has served over 2.5 million users across 100-plus organizations in a variety of industries across the world. By being multi-staged in terms of AI detection, GPTZero is able to achieve the highest capacity under the lowest possible false positives.
Top GPTZero Alternatives in 2025
GPTZero is a stable AI detector, not the first. These are the top options to consider.
1. Winston AI
Winston AI, a standalone AI detection tool designed to handle all the available LLMs. Although the average false positive score on our test was a low 59.2 percent, it was still in first place in terms of true positive AI content with a high 91.92 percent but this has not been the complete picture. Indeed, Winston AI passed the test 11/12 (all correct answers were 100%) wherein it was tested on text that was edited by an AI bypassed, Undetectable AI.
However, such precision literally costs a price. They offer a free trial of 2000 words, thereafter, their cheapest cost (when billed annually) is $12 per month when one intends 80,000 words and the most premium is also at $19 per month when one needs 200,000 words.
2. Copyleaks
Copyleaks is probably the simplest AI detection tool on the market today. Copyleaks is an AI and plagiarism detection service, that becomes increasingly popular every minute. In a few seconds, and with high-level processing, it can tell whether an existing source or an AI wrote a text or even code.
According to an independent study, it is above 99-percent accurate in identifying AI-generated content. During our testing, we determined that it is 75 percent true positive and 80 percent false positive. This works well enough to feature in our top three recommended AI detectors with one showing accuracy when dealing with human-written content.
Copyleaks offers a free alternative, but their full version costs as little as 9.99 dollars a month (100 pages limit) to 455.99 dollars a month (10000 pages).
3. Sapling AI
Sapling is an artificial intelligence (AI) writing assistant and content detector. Their ultimate feature is AI detection that is constructed by engineers of Google, Meta, Stanford, and UC Berkeley.
Sapling AI ranked second in true positive times at 87.04 percent and first in false positive with a score of 93.84 percent and performed better over premium AI detectors. Best of all, it is free, and unlike other free AI detectors, sports an AI probability score.
4. Originality AI
Originality AI, as far as AI detection is concerned, is one of the oldest in the market, and it has every reason to be one of the best to date. This AI anti-plagiarism tool has been durable as a choice to avoid plagiarism of the content by anyone out there with true and false positive stats of 70.29 per cent and 29.71 per cent in its weighted score in our 2024 post.
The price of Originality AI is based on a credit model available in two modes, one is a monthly subscription priced at 2000 credits at a price of 14.95 dollars and the other one is a pay-as-you-go service on which a minimum of 3000 credits can be obtained at a cost of 30 dollars. Every credit will read 100 words.
5. CrossPlag
CrossPlag is an AI detector that definitely should be mentioned. It is among the very few AI detectors, that can take in multilingual input. Undetectable AI has also identified it among the most accurate AI detectors in the market.
The AI detector included in CrossPlag is free to use although it will still require you to create an account.
6. QuillBot
An AI detector is also installed into QuillBot. The wide assortment of features of this writing assistant continues to increase minute by minute. Even though we are yet to have a proper reading of how effective it is consulted to prevent AI misuses, a surrogate test with the ChatGPT text itself proves that this resource also has some potential in terms of the AI detection.
Contrary to the other functions, as opposed to them, the AI detector that is offered by Quillbot is utterly free of charge, but it is limited to 1200 words per run.
7. Scribbr
Similar to QuillBot, Scribbr (another writing assistant) has an in-built AI detection app as well. On the same text that can be used to test QuillBot, the AI detection algorithm of Scribbr is accurate and fast in terms of turnaround time.
The Scribbr AI detector can detect plagiarism in up to 500 words without charge, but to enjoy all that it has to offer, you must pay to make use of their plagiarism checker. This begins at 19.95 dollars and increases to a bulk cost of processing up to 39.95 dollars.
8. ZeroGPT
ZeroGPT is one that you can turn to in your AI detection work. This platform did not perform as well in our 2024 testing regarding true positives, but it is one of our top 5 regarding false positives, which is why it deserves an honorable mention in regards to GPTZero alternatives.
It currently offers a powerful free copy and can take up to 15,000 characters at a time, but you have an option of using their premium version at $9.99/month or $26.99/month as an enterprise requirement.
Final Words – GPTZero Alternatives
GPTZero is the most reliable tool to use for AI detection. You can use this tool to detect whether AI writes your text or not. However, the aforementioned alternatives to GPTZero are also useful; you can choose any one of them.
Each alternative has different pricing plans, and you can choose them according to your requirements. Now, you don’t need to worry about AI content, detect the text before publishing it and get rid of AI text. Some of the tools also provide users with the option to rewrite text and make it AI-free. By choosing any of these tools, you can make your content more humanized and AI-free.
FAQs – Best GPTZero Alternatives
Q1. Is GPTZero the greatest AI detection tool?
Not necessarily. It is good, yet other tools such as Originality.AI and Copyleaks tend to be more accurate and have an extended feature set.
Q2. What tool can be best used in schools and universities?
The AI detector available in Turnitin is specifically designed to use in academic environments, where it has high accuracy rates and is easily integrated with the LMS.
Q3. Are AI detectors perfect in measuring?
There is no perfect tool. Most of them provide 90-98 percent accuracy; however, the accuracy may depend on the text as well as the model used to generate the result.
Q4. Will AI detection tools be able to detect ChatGPT outputs?
Yes, in the majority of tools currently, specific training is conducted to detect content produced by ChatGPT and similar tools.
Q5. Are free AI detectors as good as paid ones?
They are able to deliver acceptable output, though the paid ones generally offer superior precision, customer service and added capabilities, such as plagiarism check.
Read More : 10 Ways to Make AI Content Sound More Human
Read More : What Is AI-Generated Content? A Beginner’s Guide
