Writing
Winston AI
AI content and plagiarism detector — 99.98% accuracy, detects ChatGPT, Claude, Gemini, and AI images
Winston AI is an AI content detector used by educational institutions, publishers, and SEO teams to check whether text was written by a human or generated by ChatGPT, Claude, Google Gemini, and other known LLMs, with a claimed 99.98% accuracy rate and a #1 ranking on the DetectArena benchmark. It provides a sentence-by-sentence AI Prediction Map, advanced plagiarism detection, OCR for scanned documents and handwriting, AI/deepfake image detection (for tools like Midjourney, DALL-E, and Nano Banana), and shareable, downloadable authenticity reports — with support for 14 languages.
- Best for
- Educators, academic institutions, publishers, and SEO/content teams who need to verify whether text (or images) were AI-generated before publishing or grading
- Pricing
- Free (2,000 credits / 14-day trial); Essential $10/mo (100,000 credits); Advanced $16/mo (200,000 credits, plagiarism check); Elite $26/mo (500,000 credits, unlimited team members)
Core features
- • AI content detection (ChatGPT, Claude, Gemini, and more)
- • AI Prediction Map (sentence-by-sentence analysis)
- • AI/deepfake image detection
- • Advanced plagiarism detection
- • OCR for scanned documents and handwriting
- • Shareable, downloadable PDF authenticity reports
- • Chrome extension, Google Classroom, WordPress, Zapier, and API integrations
Use cases
- 1. Check student submissions for AI-generated writing
- 2. Verify a piece of content's originality before publishing for SEO
- 3. Detect AI-generated or deepfake images
- 4. Run plagiarism checks alongside AI detection
- 5. Integrate AI detection into a workflow via API or Zapier
How to use
Paste text or upload a document/image (including scanned or handwritten pages via OCR), run the scan, and review the AI Prediction Map, human/AI score, and plagiarism results, then export a shareable PDF report if needed.
Pricing plans
Free
$0/mo
- • 2,000 credits / 14-day trial
- • AI content detection
- • AI image/deepfake detection
- • Email and chat support
Essential
$10/mo billed annually
- • 100,000 credits/month
- • Writing feedback
- • Advanced plagiarism detection
- • Shareable PDF reports
Advanced
$16/mo billed annually
- • 200,000 credits/month
- • Up to 5 team members
- • HUMN-1+ website certification
Elite
$26/mo billed annually
- • 500,000 credits/month
- • Unlimited team members
- • HUMN-1+ website certification
Where it holds up
- High claimed accuracy (99.98%) and #1 ranking on the independent DetectArena benchmark
- Detects AI-generated images/deepfakes in addition to text
- OCR support scans handwritten or scanned documents, not just pasted text
- Sentence-by-sentence AI Prediction Map instead of just one overall score
Where it falls short
- Free plan is a time-limited 14-day trial rather than an ongoing free tier
- Advanced plagiarism detection and team seats require paid tiers
- AI detectors in general can produce false positives on human-written text — treat results as one signal, not certainty
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