Why Detecting AI Content Matters
Generative AI tools have completely changed how we create content. They’re amazing tools, but sometimes you really need to know that content is authentic:- Academic Honesty: We want to empower students to develop their own writing skills and critical thinking
- Content Quality: Your readers trust that content comes from real human experience and expertise, while content generated by LLMs often contains inaccuracies or lacks depth
- Brand Trust: Your audience expects you to be upfront about how your content is created
- Legal Requirements: Some fields actually require proof that humans wrote the content
Core Capabilities
Spot AI Content Reliably
Our detector has been tested by independent researchers and catches AI-generated text with excellent accuracy and very few false alarms.
Works with All AI Models
Detects text from ChatGPT, Gemini, Claude, DeepSeek, and new AI models as they come out.
Works in 30+ Languages
Find AI content in English, Spanish, French, German, Chinese, Arabic, and many other languages.
Finds Mixed Content
Spots AI text even when it’s mixed with human writing, showing you exactly which parts are AI-generated.
Features
Since the inception of LLMs we have been rigorously testing and improving our detection tools. The result is a powerful and flexible API which can be used with confidence. Our AI detection gives you all the details you need to make confident decisions about content authenticity.
Exceptional Accuracy
Our AI Detector has been independently tested, both internally as well as by 3rd party researchers, and shown to have exceptional accuracy in identifying AI-generated text, with very low false positive rates. In addition, we are constantly updating our detection algorithms making sure we are up-to-date with the latest generative AI models. Learn moreAI Logic - See Why Content Was Flagged
Instead of just saying “this looks like AI,” we show you exactly why. You get clear explanations that help you make confident decisions.- Find AI Sources: See when copied content comes from AI-generated websites
- Highlight AI Phrases: Points to specific sentences that sound like AI writing
- Compare Patterns: Shows how the text compares to known human vs AI writing styles
- Get Clear Reasons: Understand exactly why something was flagged as AI
Detecting Text Manipulation Attempts
People try to trick AI detectors by changing the text. We can spot these tricks.- Changed Characters: Finds when people replace letters with similar-looking symbols
- Text Spinners: Catches content that’s been run through text-changing tools
- Hidden Text: Spots invisible characters that people add to fool detectors
- Heavy Edits: Finds heavily modified AI text that’s meant to look human
Choose Your Detection Level
Pick how sensitive you want the detection to be:- Level 1: Catches text copied straight from AI tools like ChatGPT
- Level 2: Finds AI text with small changes like different tenses
- Level 3: Spots heavily edited AI content that’s been changed a lot
Enterprise-level Trust
Safe and secure for companies and schools:- Security: Your data is protected with military-grade encryption
- Privacy: Meets GDPR and other privacy regulations
- Certifications: SOC 2 & SOC 3 certified for enterprise use
Use Cases
- Education
- Publishers
- User-generated Content
Check if students used AI to write their essays and assignments. Combine with plagiarism checking to make sure work is both original and human-written.Learn more
Works Better Together
Our AI detector works great with our other tools to give you complete content checking.Plagiarism Checker
Find copied content from billions of online sources and make sure everything is original.
Grammar Checker
Help improve writing without triggering AI detectors - safe grammar and style suggestions.
Next Steps
Ready to add reliable AI detection to your app?Start Building
Follow our simple guide to add AI detection to your application.
Try it
Test our AI detector with your own text and see how it works.
API Documentation
See all the technical details for our AI detection API.
Understanding AI Logic
Learn how AI Logic shows you why content was flagged as AI.
Frequently asked questions
What is the Copyleaks AI Text Detection API?
It is a REST API that classifies text as human-written or AI-generated. You submit text, and the API returns a per-section classification (human or AI), an overall human-versus-AI summary, and AI Logic explanations of why content was flagged.Which AI models can it detect?
The detector identifies text from ChatGPT, GPT-4, Gemini, Claude, DeepSeek, Llama, and other large language models, and is continuously updated as new models are released.How accurate is Copyleaks AI detection?
Accuracy has been verified both internally and by independent third-party researchers, showing high detection rates with very low false-positive rates. See the testing methodology for details.Which languages does it support?
AI text detection works in 30+ languages, including English, Spanish, French, German, Chinese, and Arabic. See the full list of supported languages.Can it detect AI text that was edited or paraphrased?
Yes. Configurable detection levels catch everything from text copied straight from an AI tool to heavily edited or paraphrased AI content, and the API also flags text-manipulation attempts like character swaps and hidden characters.How do I start using the API?
Follow the AI text detection guide to authenticate, submit text, and read results, or see the API reference for endpoint details.Want to See It in Action?
Get a personalized demo and see how easy it is to add AI detection to your app. We’ll show you AI Logic and help you pick the right settings for your needs.