Subscription‑based AI + plagiarism detector aimed at professionals and educators, with sentence‑level highlights and image OCR.
Winston AI excels at spotting GPT‑3.5/4 content and offers rich reporting, but a ~1 % false‑positive rate and inconsistent results on lesser‑known models mean reviewers must double‑check edge cases.
71 %
0.7 %
Vulnerable to homoglyph space attacks
25
A proprietary transformer classifier analyses style, entropy and sentence‑level patterns to label AI text; results include probability score plus highlighted sentences.
Flags AI content and copied passages in one report.
Color‑codes suspect lines for quick teacher/editor review.
Uploads PDFs or scans to detect AI even from printed essays.
| Benchmark | Accuracy | False Positive | Adversarial Robustness | Notes |
|---|---|---|---|---|
| RAID (6 M docs) | 71% | 0.7% | Strong vs edits, weak homoglyph | Top accuracy on GPT‑3.5/4; low on GPT‑2 |
| Other Studies | % | % | No OIS data published |
Near‑perfect GPT‑4 detection and detailed reports make Winston AI great for high‑stakes review, but its bias toward OpenAI patterns lessens reliability on niche or open‑source LLM outputs.
Credit‑based subscriptions: Essential $18/mo for ~80k words, Advanced $29/mo for 200k words, Enterprise custom; free 2 k‑word trial available.
Professors verifying theses for AI use.
Magazine editors vetting freelance submissions.
Medical publishers enforcing originality.
Content agencies tracking writer authenticity.
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Winston AI is ideal for well‑funded teams needing polished reports and top GPT‑4 accuracy, but supplement it for edge‑case models or if you must minimize false positives.