How do I detect ChatGPT or Copilot-generated code?

Paste the snippet and run Analyze. Heuristics flag tutorial-style comments, generic names, and uniform formatting common in ChatGPT/Copilot output. Optionally request an AI second opinion for a calibrated likelihood.

The instant heuristic score runs entirely in your browser. Only the optional AI second opinion sends the snippet to Codeground's self-hosted model, which does not store it.

What languages does the AI code detector support?

Local heuristics work on any pasted text. For the optional AI opinion, pick a language or leave Auto-detect so the model can infer it.

Detector

AI Code Detector

Q: Is a high score proof of cheating?

No. Treat the score as one signal during review. Well-written human code can score high, and AI-generated snippets can score low.

Q: Is there a free AI-generated code detector?

Yes. Instant analysis is free and local with no signup. The optional AI opinion may be rate-limited during heavy load.

Free online detector for ChatGPT and Copilot-style code. Instant in-browser heuristics give you a likelihood score and the signals behind it — then get an optional AI second opinion.

Privacy: The heuristic score is computed entirely in your browser. The optional AI opinion uses Codeground's self-hosted model and is not stored.

AI can make mistakes. Please review important output before you rely on it.

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How to detect AI-generated code

Paste a function or file into the editor (a sample ChatGPT-style snippet is preloaded).
Click Analyze (instant) for a local heuristic score and the signals behind it.
Optionally run AI second opinion for a calibrated likelihood and short rationale.

There is no perfect way to prove a snippet came from ChatGPT or Copilot — but generated and tutorial-copied code leaves fingerprints: over-commenting, tutorial-style explanations, generic naming, docstrings on every function, and unusually uniform formatting. Use this free AI code detector as a signal during code review, academic checks, or hiring screens — never as a sole verdict.

Two layers of analysis

Instant heuristics (local): deterministic checks that run in your browser with no upload.
AI second opinion (optional): Codeground's self-hosted model gives a calibrated likelihood and rationale.

Example — what “AI-looking” code often includes

Step-numbered comments (“Step 1: validate input”), polite docblocks on trivial helpers, and names like calculateFactorial / isPrime without domain context. Human production code is usually messier, more abbreviated, and tied to product vocabulary.

AI code detector FAQ

How do I detect ChatGPT or Copilot code? Paste the snippet, run Analyze, then optionally ask for an AI second opinion.

Is a high score proof of cheating? No. Treat it as one signal; well-written human code can score high, and AI code can score low.

Is my code uploaded? The heuristic score is local. Only the optional AI opinion sends the snippet to our self-hosted model, which does not store it.

Which languages are supported? Heuristics work on any snippet; choose a language for the optional AI pass or use Auto-detect.

Is there a free AI-generated code detector? Yes — instant analysis needs no account; optional AI may rate-limit under heavy load.

How should I use this in hiring? Combine the score with interviews, live coding on a TypeScript playground or Node.js online editor, and context — never as a sole verdict.