Winston AI review: AI text and image detector plus plagiarism checker for schools, SEO teams and writers
AI text and image detector plus plagiarism checker for schools, SEO teams and writers
Starts at €18/mo, free plan: yes, free trial: 14-day free trial with 2,000 credits, prices checked on November 2, 2026.
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What Winston AI does
Winston AI is a web service that checks whether a piece of writing was produced by an AI model or by a person. A color-coded prediction map points to individual sentences, and a plagiarism check can be switched on for the same text. OCR lets it read scanned pages, pictures and handwriting.
The vendor positions the product for education, SEO work and individual writers. Beyond text, it offers detection of AI-generated and deepfake images, reports you can download and share, a Chrome extension, a Zapier connection and API access. According to the vendor, uploaded content is never used to improve its models.
Pricing is freemium. The Free plan gives 2,000 credits for a 14-day trial, and no credit card is needed to start. Paid plans are Essential, Advanced and Elite, charged in euros: €18, €29 and €49 per month billed monthly, or €10, €16 and €26 per month billed yearly. They include 100,000, 200,000 and 500,000 credits per month. Scans are capped at 200,000 characters on paid plans. Enterprise and custom plans are handled through the sales team, and a Winston AI coupon code is mentioned on the pricing page.
- AI text detection for ChatGPT, Gemini, Claude and LLAMA
- Sentence-by-sentence AI prediction map
- Plagiarism checker
- OCR for scans, pictures and handwriting
- AI image and deepfake detection
- Shareable downloadable reports
- Multi-language detection
- Chrome extension and API
Pros and cons
Pros
- Free 14-day trial with 2,000 credits and no credit card needed
- Sentence-level prediction map shows which passages look AI-written
- Combines AI text detection, plagiarism checking and AI image detection
- Reads scans, pictures and handwriting through OCR
- Offers a Chrome extension, Zapier and API access
Cons
- The Free plan is a 14-day trial, not a permanent free tier
- Annual plans cannot be cancelled during the term
- Credits are capped each month on every paid plan
- Advanced allows up to 5 team members; unlimited seats need Elite
- No desktop or mobile apps are mentioned on the pages
Our take
Winston AI suits people who regularly need to check text for AI authorship and want plagiarism checks, image checks and shareable reports in a single account. Teachers, editors and SEO teams are the audiences the vendor addresses. Occasional users can try the 14-day Free plan first. Anyone who wants a permanent free tier should note that the free offer is a trial. Annual billing lowers the monthly rate, but annual plans cannot be cancelled mid-term. Accuracy figures on the site are the vendor's own claims, and we have not tested the product.
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Winston AI pricing
| Plan | Monthly billing | Annual billing (per month) | Limits / what’s included |
|---|---|---|---|
| Free per month | Free | — | 2,000 credits / 14 day trial |
| Essential per month | €18 | €10 | 100,000 credits / month; the page also shows a WINSTON50 coupon code to apply at checkout |
| Advanced per month | €29 | €16 | 200,000 credits / month; up to 5 team members |
| Elite per month | €49 | €26 | 500,000 credits / month; unlimited team members |
Free trial: 14-day free trial with 2,000 credits. Free plan: yes.
Prices checked on on the official Winston AI pricing page. “—” = not published.
All Winston AI plans, limits and annual prices →
Frequently asked questions
Is there a free plan?
Yes. The Free plan costs €0 and includes 2,000 credits for a 14-day trial. The homepage says no credit card is required.
How much do the paid plans cost?
Essential is €18 per month billed monthly or €10 per month billed yearly. Advanced is €29 or €16. Elite is €49 or €26. The pricing page also shows a Winston AI coupon code to use at checkout.
Can I cancel anytime?
Yes, in the billing section, and the cancellation takes effect at the end of the paid term. Annual plans cannot be cancelled during their term.
Does it work outside the browser?
The pages list a Chrome extension, Zapier and API access in addition to the web app.
Are there plans for large organizations?
Yes. Enterprise and custom plans are available by contacting the sales team; prices are not published.
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