Winston AI
AI content detector that scores text and images for machine authorship and checks writing for plagiarism.
Winston AI is an AI content detector that estimates whether text or images were made by a generative model. Winston AI is used by pasting text or uploading a document, then reading a 0 to 100 score and a sentence-by-sentence map. Winston AI also checks plagiarism and can export the findings as a report.
Best for Educators, publishers and editorial teams that need documented AI and plagiarism checks on written work.
- Listed in
- AI Content Detection
- Platforms
- Web, API, Browser extension, Plugin
- Pricing model
- Subscription
- Free trial
- Yes
- API
- Yes
- Made by
- Winston AI
- Added
Last verified: . Information taken from gowinston.ai.
What is Winston AI?
Winston AI is a content-integrity service whose main product estimates whether a piece of writing came from a person or from a language model. A scan returns a score between 0 and 100 together with a colour-coded map that rates the text one sentence at a time, and the same document can be run through a plagiarism check. Text is pasted in or uploaded as a .docx file or as a picture, since optical character recognition reads scanned pages and handwriting. Beyond text, the company offers a detector for generated images and deepfakes, plus smaller utilities such as a grammar checker, citation generator, readability score and fact checker. Developer APIs, a Chrome extension and connections to Google Classroom, WordPress and Zapier bring the checks into other software.
Key Features
AI text detection
Rates a document from 0 to 100 for the likelihood of human or machine authorship, covering output from models such as Claude, Gemini, ChatGPT and LLaMA.
AI Prediction Map
Colours individual passages so reviewers can see which sentences look machine-written instead of relying on one overall number.
Plagiarism checker
Compares a text against existing sources, shows the duplicated passages and helps manage the citations involved.
AI image detection
Examines photos and illustrations for signs of generation by tools like Midjourney, Adobe Firefly or Nano Banana, including deepfakes.
OCR document scanning
Pulls text out of .png and .jpg files, so scanned papers and handwritten work can be checked as well.
Reports and integrations
Produces downloadable reports that can be shared or printed, and connects through an API, a browser extension, WordPress, Zapier and Google Classroom.
How Winston AI works
Create an account
Sign up without a payment card; documents can then be labelled with a title and author and sorted by type.
Add the text
Paste the writing into the quick scan box or upload a .docx, .png or .jpg file.
Read the score
Within seconds the detector shows a 0 to 100 probability and marks each sentence on the prediction map.
Run the plagiarism check
Switch on the plagiarism scan to look for copied material in the same document.
Export a report
Generate a report to print, download or share with others.
Use Cases
- Reviewing student submissions
- An instructor scans essays and keeps the sentence-level report as documentation for a conversation with the student.
- Editorial screening before publication
- A publisher checks freelance articles for machine-written passages and copied material ahead of release.
- Checking your own draft
- A writer measures the human score of a text and looks at readability feedback before sending it to a client.
- Verifying an image
- A newsroom or moderator tests whether a submitted photograph was produced by a generative model.
- Building checks into a platform
- A developer calls the detection API so that uploaded content is screened automatically inside another product.
Things to know
- Accuracy figure comes from the company
- The 99.87% accuracy rate shown on the site is reported by Winston AI from an in-house test of 12,000 English documents run for its 5.0 release.
- Usage is metered in credits
- Each plan includes a monthly credit allowance, and a single scan can cover up to 200,000 characters according to the plan comparison.
- Annual plans run for the full term
- Subscriptions can be cancelled at any time with effect at the end of the paid period, but the pricing FAQ says annual plans cannot be cancelled mid-term.
- Submitted content is not used for training
- Winston AI states that it is GDPR compliant and that scanned content is never used to improve its models.
FAQs
What is Winston AI?
Winston AI is an AI content detector and plagiarism checker. It estimates whether text or an image was produced by a generative model and reports the result as a score with sentence-level detail.
What is Winston AI used for?
Winston AI is used by teachers, publishers, SEO teams and writers to check documents for machine-generated passages and copied material before grading or publishing.
Is Winston AI free?
Winston AI offers a free tier that works as a 14-day trial with 2,000 credits, and the site says no credit card is needed to start. Ongoing use requires one of the paid plans, called Essential, Advanced and Elite.
How much does Winston AI cost?
Winston AI sells monthly and annual subscriptions that differ in monthly credits and team size. For current figures, see the official pricing page.
Does Winston AI have an API?
Yes. Winston AI lists separate APIs for AI content detection, AI image detection and plagiarism checking.
Which languages does Winston AI support?
Winston AI's FAQ names eleven languages for AI detection: English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Romanian, Indonesian and Simplified Chinese. It says more are planned.
What file formats can Winston AI scan?
Winston AI accepts pasted text and uploads in .docx, .png and .jpg format. Image files are read with OCR, which also handles handwriting.
Who it's for
- Teachers
- Academic institutions
- Publishers
- SEO teams
- Writers
Comments
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Alternatives to Winston AI
| Tool | Free plan | Starting price | API |
|---|---|---|---|
 PlagiarismCheck.orgPlagiarism checker and AI content detector for schools, universities, businesses and individual writers. |
— | — | Yes |
 CopyleaksContent integrity platform that detects AI-generated text, images and video and checks for plagiarism. |
— | — | Yes |
 IsgenMultilingual AI content detector with sentence- and phrase-level analysis, plus plagiarism and writing tools. |
Yes | — | Yes |
 Originality.aiAI content detector with plagiarism, fact, grammar and readability checks for publishers, agencies and schools. |
Yes | $12.95/mo | Yes |
 QuetextPlagiarism checker and AI content detector with grammar, summarising, paraphrasing and citation tools. |
Yes | — | Yes |
Listed in the same category as Winston AI. A starting price appears only where we checked it on the maker’s pricing page; a dash means not checked or not published. All AI Content Detection tools