FREEAI Code Detector · no signup to start

Was this code written by AI?

Paste a snippet and get an estimate of how likely it came from Copilot, ChatGPT or similar — with the signals behind the call. Supports Python, JS, Java, C++, Go and Rust.

6 languagesPer-signalNo signup
Code AI Detector
AI probability · per-signal
0 / 500 lines
RESULT
IDLE

No code analyzed yet

Paste a snippet or load the example to estimate AI authorship.

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WHAT WE ANALYZE

The fingerprints of generated code

Comment style

AI tends to over-comment with explanatory, textbook-style notes that human devs rarely write.

Naming & boilerplate

Generic variable names, perfectly uniform formatting and predictable structure are tell-tale signs.

Multi-file & repos PRO

Free covers 500-line snippets; Pro scans up to 10K lines, multiple files and whole repos.

Need to check prose, not code?

Run text through the full AI Detector and Humanizer.

AI Detector
FAQ

Code detector questions

How does it detect AI-written code?
It weighs signals that correlate with generated code: over-explanatory comments, generic naming, uniform formatting, boilerplate scaffolding and low structural variety. These combine into a probability score.
Which languages are supported?
Python, JavaScript, Java, C++, Go and Rust. The signals are largely language-agnostic, so other languages still produce a reasonable estimate.
Is it reliable?
Code detection is inherently harder than prose — short or heavily edited snippets are ambiguous. Treat the score as a hint for review, not proof of authorship.
How much can I check for free?
Anonymous users get 5 snippets a day up to 500 lines; a free account makes 500-line checks unlimited; Pro scans up to 10K lines, multiple files and repositories.
Is my code stored?
No — analysis runs in your browser and nothing is uploaded.
Does it work on mobile?
Yes — the editor and results stack cleanly on phones.