Copyleaks
FreemiumAI content and plagiarism detection platform — detect AI writing from ChatGPT, Claude, and human plagiarism.
Winston AI
AI content detector built for publishers and educators — 99.98% accuracy detecting ChatGPT and Claude.
Last updated:
Winston AI is an AI content detection tool designed specifically for publishers and educators who need high-confidence detection of AI-generated text. It claims 99.98% accuracy on ChatGPT and Claude content, provides a human-generated probability score, and offers a Chrome extension for quick in-browser checks.
Key Features
- 99.98% claimed accuracy on major AI models
- Human-generated probability score (0-100%)
- Chrome extension for quick checks
- Plagiarism detection add-on
- OCR for scanning images and PDFs
- Team accounts for agencies
Pricing
- Free: 2,000 words/month
- Essential ($18/month): 80,000 words/month
- Advanced ($29/month): 200,000 words/month
Best For
Publishers, content agencies, educators, and HR teams who need a reliable AI detector to verify that submitted content is human-written before publishing or accepting it.
More AI Detection Tools
GPTZero
FreemiumThe leading AI content detector — identify whether text was written by ChatGPT, Claude, or other AI models.
Hive Moderation
FreemiumAI content moderation API — detect AI-generated images, NSFW content, and text across platforms at scale.
Originality.ai
PaidAI content and plagiarism detector built for content publishers — 99% accuracy on GPT-4 and Claude.