AI text detector

Detect AI-generated text with sentence-level highlighting and detailed metrics. Free alternative to GPTZero.

Free & unlimitedNo signup

Input text

Statistical analysis only — not 100% accurate. Best with 150+ words.

0 words (need 25 more)0 / 100,000 chars

~5 sec estimated

Processed on our servers and deleted right after. Never stored or shared.

About this tool

1
Paste or upload text
Paste text directly, upload a .txt file, or drag and drop. Minimum 25 words for analysis.
2
Click Analyze
Our engine runs 8 statistical tests: burstiness, vocabulary richness, entropy, AI phrase density, sentence patterns, readability consistency, repetition, and length uniformity.
3
Review highlighted results
See every sentence color-coded: green (human), yellow (mixed), red (AI-generated). Click any sentence for details.
4
Explore metrics & suggestions
Dive into detailed writing metrics, readability scores, text statistics, and actionable suggestions to make text sound more human.

For most accurate results, use at least 150+ words - short texts may produce unreliable scores.
The detector uses statistical analysis (burstiness, entropy, vocabulary patterns) - no text is sent to any server.
AI-generated text tends to have uniform sentence lengths, overuse transition words like "Furthermore" and "Moreover", and low vocabulary diversity.
Use the Suggestions tab to see exactly what makes your text look AI-generated and how to fix it.
Check history is saved locally - revisit past analyses anytime from the History panel.

Sentence-level AI highlighting
8 statistical detection metrics
Animated score gauge with verdict
Paragraph breakdown analysis
Writing metrics dashboard
Readability scores
Humanization suggestions
Check history (local)
Copy results
100% client-side - no data sent anywhere

Students checking if their essays might be flagged by AI detection tools.
Teachers and professors screening submitted work for AI-generated content.
Content writers ensuring their articles sound authentically human.
Editors verifying originality of submitted manuscripts and blog posts.
Anyone curious about how AI-like a piece of text appears based on statistical patterns.

It uses statistical heuristics to identify patterns common in AI-generated text: burstiness, vocabulary diversity, entropy, sentence patterns, readability consistency, and the presence of AI-favored phrases. Text is sent to our servers for analysis and deleted right after — never stored or shared.

No AI detector is 100% accurate. This tool provides an estimate based on writing patterns. Heavily edited AI text or formulaic human writing may produce inaccurate results. Use it as one data point, not a definitive judgment.

25 words minimum, but 150+ words is recommended for more reliable scores. Short texts often produce unstable results because the statistical patterns need enough data to be meaningful.

Formulaic writing, heavy use of transition words like "furthermore" or "moreover", uniform sentence lengths, and limited vocabulary can all trigger false positives. Check the Suggestions tab for specific patterns that influenced the score.