Free GPT-4 Text Detector
GPT-4 is OpenAI's most advanced language model and produces especially natural-sounding text. Yet it still leaves detectable statistical patterns. AIDetego analyzes these patterns with 16 specialized modules – right in your browser.
Why Is GPT-4 Detection Harder?
GPT-4 produces significantly more human-like text than its predecessors. Sentence structure is more variable, vocabulary more diverse, and phrasing less formulaic. Yet statistical analysis reveals measurable differences from human writing:
- Entropy Patterns – GPT-4 produces unnaturally uniform information density across the entire text.
- Zipf Deviation – Word frequencies deviate subtly from the natural Zipf distribution.
- Cohesion Excess – GPT-4 uses above-average transition words and logical connectors.
GPT-4 vs GPT-3.5: Detection Differences
| Feature | GPT-3.5 | GPT-4 |
|---|---|---|
| Sentence Uniformity | High | Medium |
| Vocabulary Depth | Limited | More diverse |
| AI Phrases | Very common | Less common |
| AIDetego Detection | Easier | Possible (16 modules) |
Frequently Asked Questions
Can AIDetego detect GPT-4?
Yes. AIDetego uses 16 modules that detect statistical patterns even in GPT-4 text – particularly through entropy analysis, Zipf distribution, and pseudo-perplexity.
What's the difference between GPT-4 and ChatGPT?
ChatGPT is OpenAI's chat interface. GPT-4 is the underlying language model. ChatGPT can run with GPT-3.5 or GPT-4 as its engine.
Is my text sent to a server?
No. All 16 analysis modules run locally in your browser. Your text never leaves your device.