Winston

Winston AI is an AI content detector and plagiarism checker. Users paste text or upload documents and images, and the tool returns a score from 0 to 100 for the likelihood that the text was written by a human or generated by an AI model, along with a sentence by sentence prediction map. It is designed to recognize output from ChatGPT, Claude, Google Gemini, LLAMA and other models, and supports detection in many languages including English, French, Spanish, German, Portuguese and Italian. The vendor targets educators, SEO teams and publishers, and writers who want a check before publishing. Additional capabilities include optical character recognition for scanned pages and handwriting, advanced plagiarism detection, AI image and deepfake detection for output from tools such as Midjourney, Stable Diffusion and other image generators, writing feedback, shareable PDF authenticity reports, document organization with titles and authors, team seats, credit top ups, and a website certification program. The accuracy figure of 99.87 percent on the home page is the vendor's own claim. Enterprise plans add custom integrations and dedicated support. Pricing runs on credits. The Free plan is $0 with 2,000 credits over a 14 day trial. Essential is $18 per month for 100,000 credits, Advanced is $29 per month for 200,000 credits with up to five team members, and Elite is $49 per month for 500,000 credits with unlimited team members. Annual billing is discounted by about 45 percent. A coupon promotion appears on the page. Custom enterprise pricing is available through sales.