AI Content Authenticity Checker

FREE TOOL AI Tool · 22 Aug 2026

AI Content Authenticity Checker is a free offline tool that analyzes any text and tells you how likely it was written by AI. It checks linguistic patterns commonly found in AI writing and gives you a clear score.

What it checks

• AI probability %
• Human probability %
• Sentence variation (burstiness)
• List of flagged AI-style words and phrases
• Confidence level
• Practical tips to make the text more human

How to use

1. Download the tool
2. Open the HTML file in any browser
3. Paste your content
4. Click Analyze Authenticity
5. View AI score, human score and suggestions

Features

• Works completely offline
• No signup, no internet required
• Detects common AI words (delve, tapestry, pivotal, foster, etc.)
• Checks formal transitions and uniform sentence lengths
• Best results with 150+ words
• Completely free to download and use