Last updated 06-27-2026
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Winston AI
Winston AI is a content integrity platform that scans text and images to flag likely machine-generated writing, copied passages, and questionable claims. Schools, publishers, and writers use it to verify originality before grading, publishing, or submitting work. The company reports more than 10 million users on its homepage.
Detection models are trained on a large mix of human and synthetic writing and updated as new LLMs ship. Winston advertises a 99.98% accuracy rate on its Advanced Scan and supports output from ChatGPT, Claude, Google Gemini, LLaMA, and other commercial models. Sentence-level scoring shows exactly which lines triggered a flag.
The product targets educators reviewing student essays, SEO teams auditing publisher content, and freelancers who need proof their drafts are human-written. Integrations include Google Classroom, a Chrome extension, WordPress, and Zapier, plus a developer API for embedding checks in other apps.
Advanced Scan advertises 99.98% accuracy with sentence-level highlights
Flags text from ChatGPT, Claude, Gemini, LLaMA, and other major LLMs
Plagiarism checker surfaces copied web sources next to synthetic writing flags
Image scanner targets deepfakes from Midjourney, Stable Diffusion, and similar tools
Multilingual detection across English, French, Spanish, German, and 7+ more languages
Developer API ships with 2,500 free trial credits on signup
Google Classroom integration for classroom submission workflows
Free tier includes AI detection and plagiarism checking without a credit card.
Sentence-level Advanced Scan shows exactly which lines triggered flags.
Broad model coverage across ChatGPT, Claude, Gemini, LLaMA, and paraphrased output.
Developer API with 2,500 trial credits for integrating checks into other products.
Google Classroom integration suits schools running integrity checks at scale.
Free plan limits usage to 2,000 credits over 14 days, not ongoing monthly access.
Shareable reports and deeper team pooling require Advanced or Elite plans.
No dedicated mobile app; scanning happens through the web dashboard and browser extension.
Does Winston AI have a free plan?
Yes. Winston AI offers a free tier with 2,000 credits over a 14-day trial, including basic AI detection, plagiarism checking, and HUMN-1 website certification during the trial. Paid plans add higher monthly credit limits and team features.
How accurate is Winston AI at detecting AI writing?
Winston AI claims a 99.98% accuracy rate on its Advanced Scan, with sentence-level scoring that highlights specific flagged lines. The company says its model is trained on one of the largest reviewed datasets of human and synthetic content in the industry.
Which AI models does Winston AI detect?
Winston AI detects synthetic text from ChatGPT, Google Gemini, Claude, LLaMA, and other commercially available LLMs. The site also notes detection for paraphrased or humanized AI output, not just raw model generations.
What languages does Winston AI support?
Winston AI supports AI detection in English, French, Spanish, Portuguese, German, Dutch, Polish, Italian, Indonesian, Romanian, and Chinese (Simplified), with more languages listed as coming soon on the homepage.
Does Winston AI offer an API?
Yes. Winston AI provides REST APIs for AI content detection, plagiarism checking, fact checking, and image detection. New developer accounts receive 2,500 free credits, and documentation is hosted at docs.gowinston.ai.
Is Winston AI GDPR compliant?
Winston AI states that its organization is GDPR compliant and that scanned content is kept secure and not used to retrain its models. The product is also described as SOC 2 certified on its AI detector marketing pages.
Can Winston AI detect paraphrased AI content?
Yes. Winston AI includes paraphrased content detection on paid plans, designed to catch text rewritten by humanizer tools rather than only raw ChatGPT or Claude output. This feature is listed in the pricing comparison table on gowinston.ai.