JPlag vs Winston AI
JPlag
github.com
Winston AI
gowinston.aiSide by side
| Figure | JPlag | Winston AI |
|---|---|---|
| Price from | Free | $5/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 8 |
| Spec score · Plagiarism Detection Software | 8.8 (#9) | 8.5 (#12) |
| Languages | The README lists support for Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language submissions, with varying maturity levels. | AI text detection supports English, German, French, Dutch, Spanish, Portuguese, Italian, Polish, Indonesian, Tagalog, Chinese, Romanian, Russian, Ukrainian, Bulgarian and Azerbaijani. |
| License | The software is distributed under the GPL-3.0-only license. | Winston AI terms describe the software, source code and site content as proprietary and grant only a limited personal license, so it is not open source. |
| Purpose | JPlag finds pairwise similarities among programs to detect source-code plagiarism and collusion. | Winston AI detects AI-generated text and images and offers plagiarism checking and other content-integrity tools. |
| Support | The project directs users to report bugs and issues on GitHub and provides a Q&A discussion section. | The company invites users to contact [email protected] and says it will get back to them promptly. |
| What it does | JPlag compares programs pairwise to identify likely source-code plagiarism and collusion. | Winston AI is a cloud content-verification platform for AI detection, plagiarism checking, fact checking, writing feedback, essay grading and image analysis. |
Plans
Winston AI
- FreeFree
- Essential$60 a year
- Advanced$96 a year
- Elite$156 a year
- Essential$189 a month
- Advanced$2,914.50 a month
- Elite$4,924.50 a month
- Enterprise and Custom PlansPriced on request
In their own words
JPlag
JPlag is free software for finding pairwise similarities among programs that may indicate source-code plagiarism or collusion. It examines programming-language syntax and program structure, helping identify overlap even when code has been partly obfuscated. Analysis runs locally on the user’s machine, and the project says no data is sent externally. Comparisons are between submitted programs rather than internet sources. Listed language support includes Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language submissions, with varying maturity. Users can run the command-line interface or Java API, launch a report viewer from the CLI, or add JPlag through Maven Central. Reports show at most 2,500 pairs by default, adjustable with the -n option. Lower minimum matching-token lengths increase sensitivity but can also increase false positives. Running or building requires Java SE 25.
Winston AI
Winston AI checks text and images for AI-generated content and provides plagiarism checking and other content-integrity tools. Its detector identifies material from ChatGPT, Claude, Google Gemini, LLAMA, and other AI models. Users can paste text or upload DOCX, PNG, and JPG files; OCR extracts text from scans, pictures, and handwriting. An AI prediction map highlights passages and assesses text sentence by sentence, and reports can be downloaded or shared as printable PDFs. The homepage lists detection in 16 languages, including English, French, Spanish, German, Portuguese, Dutch, Polish, Italian, Romanian, Indonesian, Tagalog, Russian, Bulgarian, and simplified Chinese. Integration options include a Chrome extension, Google Classroom, WordPress, Zapier, and an API; the extension scans highlighted webpage text and images. Plans include a free option and a 14-day trial. Paid pricing starts at $10/mo billed annually; listed annual plans cost $60.00 USD, $96.00 USD, and $156 a year. Paid scans support up to 200,000 characters each. Annual subscriptions cannot be canceled during their term.