Winston AI

Winston AI checks whether text was written by ChatGPT, Claude, Google Gemini, LLaMA, and other large language models, and bundles that with a separate advanced plagiarism checker and an AI image/deepfake detector for pictures generated by tools like Midjourney, DALL-E, and Adobe Firefly. Submissions can be pasted directly or uploaded as .docx, .png, or .jpg files, with built-in OCR to pull text out of scanned documents or handwriting before scanning it.

A scan returns a 0-100 score estimating the odds a text is human- or AI-written, plus a color-coded "AI Prediction Map" that highlights the specific sentences driving that score rather than leaving the reader with a single opaque number. Detection covers 14 languages, including French, Spanish, German, Portuguese, Polish, and Chinese (Simplified), and results can be exported as a shareable PDF report. Usage is metered by credits rather than a flat seat count, with each paid tier raising the monthly credit allotment, the number of files that can be batch-scanned per hour, and the number of team members who can share a plan's credit pool.

Winston markets itself most directly at academic institutions screening student submissions for AI-generated writing, and at publishers and SEO teams checking articles before they go live; it has also been cited by outlets including the New York Times, Wired, and the BBC. Its accuracy claims are backed by an internally published methodology and a #1 ranking on the third-party Detect Arena benchmark, which is more transparency than many competitors offer, though the headline 99.87% figure still originates from Winston's own testing rather than a fully independent audit.