AI Content Detector – Detect AI-Generated Text Free Online
Detect whether text was written by AI (ChatGPT, Claude, Gemini) or a human. Free AI content detector — runs in your browser, no sign-up.
What is AI Content Detector – Check if Text is AI Generated?
An AI content detector analyzes text for patterns characteristic of AI-generated writing — such as uniform sentence structure, lack of personal anecdotes, statistical word distributions, and unnaturally consistent tone. Our tool uses a browser-based heuristic analysis model to score text on a human-to-AI spectrum.
How to Use AI Content Detector – Check if Text is AI Generated
- 1Paste the text you want to analyze into the input area.
- 2Click Analyze to run the AI detection.
- 3Review the AI probability score and the highlighted suspicious sections.
- 4Read the explanation of which patterns triggered the score.
Key Features
- ✓AI probability score (0–100%)
- ✓Sentence-level highlighting of AI-like patterns
- ✓Supports any text language
- ✓Runs in your browser — text never sent to a server
- ✓No character limit
Benefits
- →Check student submissions for AI-generated content
- →Verify content authenticity before publishing
- →Understand what patterns AI detectors look for
- →Free alternative to paid AI detection services
Why Use Irreva for AI Content Detector – Check if Text is AI Generated?
Frequently Asked Questions
How does the AI content detector work?
The detector analyzes multiple linguistic features: sentence length burstiness (human text varies more), vocabulary diversity (type-token ratio), average sentence length (AI tends to produce uniform lengths), and punctuation patterns (human writing uses more casual punctuation like em-dashes and ellipses). These signals are combined into an overall AI likelihood score.
How accurate is the detector?
The detector uses heuristic linguistic analysis — it is an estimation tool, not a definitive classifier. Accuracy varies by text type, length, and the specific AI model used. Short texts (under 100 words) produce less reliable results. Do not rely on this tool as the sole basis for any decision.
Is my text sent to a server?
No. All analysis runs entirely in your browser using JavaScript. No text is sent to any server — not Irreva's, not any third party.
Can it detect text from ChatGPT, Claude, and Gemini?
The tool analyzes general AI writing patterns that are common across large language models. It does not identify which specific model produced the text.
Why might human-written text get flagged as AI?
Academic writing, technical documentation, and formal reports often use uniform sentence lengths and formal punctuation — characteristics also common in AI text. Conversely, highly varied casual writing might score as human even if AI-generated.
How accurate is the AI content detector?
No AI detector is 100% accurate. This tool identifies statistical patterns common in AI writing but may produce false positives for highly formulaic human writing and false negatives for heavily edited AI text. Use results as a signal, not a verdict.
Can it detect Claude, Gemini, and other models?
The detector looks for general AI-writing patterns rather than model-specific fingerprints, so it works across ChatGPT, Claude, Gemini, and other LLMs.
Rate AI Content Detector – Check if Text is AI Generated
How useful was this tool?