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Rileva testo generato da AI con euristiche basate su regole
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Free AI text detector — rule-based, private, unlimited
Strumentoolis AI Text Detector analyzes whether text was likely written by ChatGPT, Claude, Gemini, or other AI models. We use the same statistical heuristics that power paid services like GPTZero and Copyleaks — but free, unlimited, and entirely in your browser.
How to use this tool
- 1
Paste the text
Drop 200+ words for reliable analysis. Shorter samples give less accurate results — that's a fundamental limit of heuristic detection.
- 2
Wait for analysis
The analyzer runs 5 heuristics in parallel — all in your browser, in milliseconds.
- 3
Read the breakdown
Overall AI-likelihood score plus individual metric breakdowns. Review which signals triggered.
The 5 heuristics we measure
- 1. Perplexity proxy
- Measures word predictability. AI tends to use common, predictable words more often than humans. We compute the ratio of rare words (not in top 500) to total words.
- 2. Burstiness
- Measures sentence-length variance. Humans mix short punchy sentences with long flowing ones. AI produces more uniform lengths. Higher variance = more human-like.
- 3. Vocabulary diversity (TTR)
- Type-Token Ratio = unique words / total words. AI has moderate TTR; humans vary widely. Too high or too low both suggest machine-generation.
- 4. Repetition score
- Counts how often 3-word sequences repeat. AI tends to reuse phrases. Humans vary their phrasing.
- 5. AI-tell phrases
- Common AI linguistic patterns: "furthermore", "it is important to note", "in conclusion", "delve into", "moreover", "a testament to", "navigate the complexities".
⚠️ Important: No AI detector is 100% accurate
False positives are common. Formal writing (academic, legal, technical) often flags as AI because humans also use structured prose. Non-native English speakers are disproportionately flagged because their prose tends toward common words. Short texts (under 200 words) have high error rates regardless of detector.
Never use AI detection as proof of misconduct. Use it as a conversation starter, never a verdict.
What this tool is good for
- Quickly sanity-checking suspected AI-written content
- Self-reviewing your own writing for AI-like patterns if you used AI-assistance
- Understanding the heuristic signals AI detectors use
- Comparing with paid tools before paying for subscriptions
What this tool is NOT good for
- Accusing students of academic misconduct
- Rejecting job applications / submissions
- Any high-stakes decision
- Detecting paraphrased / hybrid human-AI content
Frequently Asked Questions
Is this actually using AI to detect AI?
How accurate is it?
What heuristics do you use?
Can AI text fool this detector?
Is my text sent to a server?
Should I use this to accuse someone of using AI?
What's the difference vs. paid AI detectors?
Punti chiave
- AI Text Detector is a free, browser-based developer tool — detect ai-generated text with rule-based heuristics.
- No signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use AI Text Detector
- Open the tool: Launch AI Text Detector on Strumentoolis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
AI Text Detector — Quick Facts
- Prezzo
- Gratis — senza limiti, senza filigrana, senza paywall
- Privacy
- 100% nel browser — nessun dato viene inviato a server
- Piattaforma
- Qualsiasi browser moderno — desktop, tablet o mobile
- Categoria
- Sviluppatore Strumentos on Strumentoolis
- Offline
- Works offline after first visit (Progressive Web App)
| Caratteristica | Dettagli |
|---|---|
| Strumento | AI Text Detector |
| Categoria | Sviluppatore |
| Registrazione richiesta | No |
| Caricamento file | Nessuno — elaborato nel browser |
| Supporto mobile | Completamente adattivo |
| Costo | Gratis per sempre |
Why Use AI Text Detector?
You should try AI Text Detector for a quick, private way to detect ai-generated text with rule-based heuristics. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.