PDFAITools
ZeroGPT
Free AI text detector. Instantly check if content was written by ChatGPT, GPT-4, Gemini, or other LLMs.
What is ZeroGPT?
Free AI Text Detection for Everyone
ZeroGPT is a free, accessible AI text detector that allows anyone to quickly check whether content was written by ChatGPT, GPT-4, Gemini, or other language models. With no account required for basic use and an intuitive paste-and-check interface, it has become one of the most visited AI detection tools among general users.
Simple and Accessible
ZeroGPT focuses on simplicity. You paste your text, click a button, and get an AI percentage score within seconds. While it lacks some of the advanced features of paid tools like Winston AI or Originality.AI, it provides a genuinely useful free option for educators, writers, and individuals who need occasional AI detection without a subscription.
- No account required for basic detection
- Supports text in multiple languages
- Sentence-level highlighting of likely AI content
- Browser extension available for quick checks
Key Features
Paste any text and get an AI probability score in seconds — no account or payment required.
Detects AI-generated content across multiple languages, not just English text.
Color-coded highlighting identifies which parts of a document are most likely AI-generated.
Check text directly on any webpage without copying and pasting through the ZeroGPT extension.
See character counts, word counts, and per-paragraph AI probability alongside the overall score.
Who Uses ZeroGPT?
Educators can quickly check individual student submissions without a paid subscription.
Writers check their own AI-assisted content to understand how it might be perceived by detectors.
Anyone can verify whether a social media post, article, or email was likely written by AI.
Test different types and styles of AI output to understand detection patterns and boundaries.
Pros & Cons
✅ Pros
- Completely free for basic use — no account or payment needed
- Fast and simple with minimal friction to get a result
- Multilingual detection is a useful differentiator
- Good enough accuracy for general spot-checking purposes
- Browser extension adds convenient in-context checking
❌ Cons
- Lower accuracy than premium paid alternatives
- Higher false positive rate compared to tools like Turnitin or Winston AI
- Limited features beyond basic detection scoring
- Not suitable for high-stakes institutional decisions
ZeroGPT Pricing
Free
- Basic AI detection
- Sentence highlighting
- Multilingual support
- No account required
Premium
- Higher accuracy model
- Batch scanning
- API access
- Priority processing
ZeroGPT earns a 3.9/5 rating from our editorial team. It's completely free to use with no hidden costs, making it one of the most accessible tools in the Writing & Content space. Standout strengths include completely free for basic use — no account or payment needed and fast and simple with minimal friction to get a result.
Get Started with ZeroGPT →