Decopy AI

Decopy AI

Free

Free AI content detector and humanizer with summarizer and math solver, no sign-up required.

AI WritingAI WritingStudentFreelancerContent Creator
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What is Decopy AI?

Decopy AI is a completely free, registration-free platform that combines an AI content detector, AI humanizer, text summarizer, YouTube video summarizer, math solver, and AI flashcard maker. The AI detector claims up to 99% accuracy in identifying text generated by ChatGPT, Gemini, Claude, Llama, and other models. The humanizer rewrites AI-generated content to sound natural and bypass detection tools. Developed in Japan, Decopy AI prioritizes accessibility and privacy, requiring no login to use any of its core tools, making it one of the most friction-free AI writing utilities available.

Key Features

AI Content DetectorAI HumanizerText SummarizerYouTube SummarizerMath SolverFlashcard MakerMulti-language SupportNo Sign-up Required

How to Use Decopy AI

1Visit Decopy AI (no sign-up needed)
2Paste your text or enter a YouTube URL
3Select the tool: Detector, Humanizer, or Summarizer
4Review the result and copy or download your output

✅ Best For

  • Students who want a quick, free way to check if their essay draft reads as AI-generated before submitting to their professor
  • Educators who need a cost-free preliminary screening tool to flag suspicious student assignments for closer human review
  • Content creators who use AI to generate drafts and need a fast humanizer to make the output sound authentic before publishing

❌ Not For

  • Enterprise teams needing bulk AI detection with API access, detailed PDF reports, or institutional dashboards — Decopy lacks those features
  • Users seeking guaranteed bypass of advanced detection systems like Turnitin, as real-world accuracy of the humanizer varies significantly in independent tests
  • Organizations with compliance or data sensitivity needs, since the tool processes text on external servers without enterprise-grade security guarantees

Reviews

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Pricing

Free$0
  • ✓Full access to AI Detector
  • ✓Humanizer
  • ✓Summarizer
  • ✓Math Solver
  • ✓no sign-up
Pro$9.99/mo
  • ✓Advanced features
  • ✓higher usage limits
Business$29.99/mo
  • ✓Team features and priority support

Prompts to Try

Detect if this paragraph was written by ChatGPT

Humanize this AI-generated essay introduction

Summarize this YouTube video on machine learning

Solve this calculus problem step by step

Use Cases

A college student uses Decopy AI's detector to check her AI-assisted lab report before submission, finds that two paragraphs score high for AI content, then uses the humanizer to rewrite those sections so they pass her professor's screening tool.
A content agency uses Decopy AI's summarizer to quickly extract key insights from long YouTube videos about competitor products, turning 30-minute videos into 5-bullet summaries for their research team.
A high school teacher pastes student essays into Decopy AI to quickly flag assignments that might contain ChatGPT-generated content, using it as a first-pass screening tool before applying more rigorous manual review.

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Frequently Asked Questions