JPlag vs Turnitin AI Writing Detection
JPlag
jplag.ipd.kit.eduTurnitin AI Writing Detection
turnitin.comSide by side
| Figure | JPlag | Turnitin AI Writing Detection |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Plagiarism Checkers | 8.0 (#10) | 6.7 (#29) |
| Founded | 1996 | 1998 |
| Headquarters | Karlsruhe, Germany | Oakland, California, United States |
| Purpose | JPlag finds pairwise similarities among programs to detect source-code plagiarism and collusion. | The detector helps educators identify text that may have been generated or modified by AI writing tools. |
| Support | The project directs users to report bugs and issues and provides [email protected] for other inquiries. | Users who need access should contact their Turnitin administrator, who can speak with the account manager; technical support cannot enable the feature. |
Plans
Turnitin AI Writing Detection
- Turnitin AI Writing Detection (institutional license/add-on)Priced on request
In their own words
JPlag
JPlag is free, open-source software for finding pairwise similarities among submitted programs. It examines program syntax and structure to help detect source-code plagiarism and collusion, especially in student programming exercises, and can also identify duplicated or stolen software parts. It does not compare submissions with the internet. Supported inputs include Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language projects. JPlag runs locally, with the project stating that source code and plagiarism results are not sent externally. You can use its command-line interface, Java API, or Maven Central dependency. A bundled report viewer opens generated or existing reports. Base-code directories can exclude shared starter code, while matching-token sensitivity is adjustable. The default report lists up to 2500 comparison pairs, configurable with -n. Running or building it requires Java SE 25.
Turnitin AI Writing Detection
Turnitin AI Writing Detection has no write-up on Specifiction yet; its figures are above.