What Copyleaks does
Copyleaks offers AI detection and plagiarism checking for text, images and video. Based on its website as of October 2026, its AI text detector supports more than 30 languages, scans up to 25,000 characters for free, and gives more monthly scans with a free account. For source code, its Codeleaks product focuses on code governance and license compliance: it looks at where code came from, whether human-written or AI-generated, can scan code from sources such as GitHub, GitLab and Stack Overflow, and is offered through an API. The Codeleaks page lists Ruby, JavaScript, TypeScript, Python, C++, C, Java, C#, PHP, CSS and Markdown. Paid plans are based on credits, and source code scans use credits too.
What this tool does instead
This site does one narrower job. You paste a single snippet, and an AI model reviews its style and returns a verdict, an AI probability and the reasons behind the number. There is no account, no credits and no payment; the free allowance is 10 checks per day. It does not search the web, does not compare code with repositories and does not check licenses, so it cannot tell you that code was copied or that it carries license obligations.
Which one fits your situation
- License and IP compliance. If you need to know whether code in your product came from a licensed source, a platform such as Copyleaks' Codeleaks is the right kind of tool. This site is not.
- One suspicious submission. If you have a single piece of code and want a quick second opinion on whether it reads as AI-written, paste it here and read the reasons.
- Checking your own work. Students and developers who want to see how their own code reads, without creating an account anywhere, can use this tool as often as the daily limit allows.
- Code review at work. For a pull request or a contractor's delivery, a quick read of style is usually enough to decide whether to ask questions.
Whatever tool you use, a score is a reason to look closer, not proof. Asking the author to explain or extend their code is still the most reliable check available.
Read more
- Codequiry alternative — when you need plagiarism checks across a class.
- Detect AI code in pull requests — for code review at work.
- ChatGPT code detector — what the detector looks at.
Frequently asked questions
Is this site affiliated with Copyleaks?
No. This is an independent tool. The description of Copyleaks on this page is based on what Copyleaks' own website said when we checked it in October 2026; check their site for current details.
Does this tool check code licenses or plagiarism?
No. It does not compare your code with other code, public repositories or license databases. It only reads the snippet you paste and estimates whether its style looks AI-written.
How many checks can I run?
You paste one snippet at a time, with a free allowance of 10 checks per day per IP address. There are no credits, accounts or paid plans.
Which one is more accurate?
We have not compared them and do not make accuracy claims for either. The two tools answer different questions, so the more useful choice is the one that matches what you need to know.
Is my code stored?
No. The snippet goes to a third-party AI model provider (Groq, with Google Gemini as a fallback) for the analysis and the result comes straight back to you. We do not save the code or write it to our logs.