The 10 Best AI Writing Detectors to Try in 2025

There are plenty of AI tools to use online these days, including AI writing detector apps that help you detect if something is created by a person or artificial intelligence. These apps are using machine learning to help evaluate various parameters to see if the text or image is from AI or a person. 

The parameters that these detection algorithms visit are things like word usage, sentence structure, and any repetitive language. The detection algorithm will essentially ask itself if it could write this or create this piece of content, and if yes, then it will give you a final report with a percentage of how likely this content is made from or manipulated by AI. 

1. AI Detector
2. TraceGPT 
3. Winston AI 
4. Hive 
5. GPTZero 
6. Originality.ai 
7. Smodin 
8. Quillbot
9. Grammarly 
10. Surfer AI content detector

There are plenty of reasons to use detection options to find out about content that’s created by or manipulated by AI. Maybe you have a content management firm or you’re just wondering what you’re about to consume online.

We can never be too sure in a world full of AI and fake media, so it’s imperative that you use these detection tools to test content before taking it for fact. Another reason to use these detection tools is to test students’ work in the classroom.

We’ve seen educators pick up these detection tools to help keep the classroom free of AI content, unless otherwise allowed. This helps to keep students from using AI tools to write their essays or answer questions. Educators have truly enjoyed these 10 best AI writing detectors. 

AI Detector 

This detector can evaluate content from ChatGPT, Gemini, and others, such as Claude. We’ve noticed that some detectors have trouble with Claude, but the AI Detector seems to do well most of the time. Since GPT systems are used the most, we are surely grateful that this AI detector can analyze that text and report back to you that the content is made by AI. 

You will not know which AI writer was used to develop the content. The only report back will say a percent of AI, not a specific program or writing tool. 

TraceGPT 

Next on the list is TraceGPT. This is a good option for those willing to invest in using a premium detection model. As of the time this is written, they charge $5.99 per month. This only allows you to evaluate up to 20 pages of 275 words each. 

This detector has an authorship verification tool, plagiarism check, and a Chrome browser extension for use when detecting AI content. 

Winston AI

Another AI writing detector is this one called Winston AI, which is good at evaluating most content writers that use artificial intelligence, but it neglected to positively detect content written by Claude. This is normal with a lot of the detection models, because Claude writers very similarly to a human being. 

Hive

Hive is a free option for those who want to test AI written content, but it could become a paid option in the future. As with most new tools, they release a free version with paid upgrades later on. Hive is great at detection AI content and has a Chrome browser extension. 

GPTZero 

This detection option doesn’t do well with Claude, as it reports back as human drafted content, perhaps you’ll enjoy it because you’re not testing Claude content. This does have a good API integration and a browser extension for Chrome. 

You can test up to 10,000 words on a paid account with GPTZero. 

Originality.ai

This is a good option to help evaluate GPT content on the web. This is good for ChatGPT versions of text, but it doesn’t seem to recognize content by Gemini or Claude very accurately. This does offer a readability check and has a good API integration. This is a paid writing detector to try in 2025, with the current pricing to start at $14.95 or go to about $30 per month on a pay as you go plan. 

Smodin

This is another option to test AI content to see how reliable it is for you. This wasn’t super reliable during our testing as it wasn’t good with Claude content. This seems to be a pattern among AI detection, so don’t hold it against Smodin. 

This is a free option for limited accounts, such as 5 weekly uses, and a paid option that starts around $12 per month, depending on how much you use this AI detection option. 

Quillbot

Quillbot is an AI detector that can check up to 1,200 words for free and you can easily copy and paste text into their website to test the content. This option does feature a Chrome browser extension and has premium paid options that start at just over $8 per month for the lowest plan if you pay annually. 

Grammarly 

This option is known for their grammar and spelling checks along with their AI sentence rewriter. This option is able to have a browser extension along with some paid plan tiers that you can choose from based on usage. 

They do have a readability checker and plagiarism checker tool that you can use during your time as a Grammarly customer. 

Surfer AI content detector

The last on our list of the 10 best AI writing detectors to try in 2025 is this one from Surfer SEO. Surfer AI content creator is a good tool to help those who want to research SEO content for AI technology. This means you can check 100-500 words for AI content on a free plan but you can upgrade if you want to go beyond that. 

This checker can evaluate ChatGPT, Gemini, Claude, and other AI written content with no issues. It is mostly accurate but there have been times when the percent showed 50% AI when it was a human written piece of content. 

As you can see there are plenty of detection tools to choose from that can help you evaluate AI  content. Whether you’re looking to use a free option or upgrade to a paid plan, these are the 10 best AI writing detectors to try this year.