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AI Content Detector

Free

Check any text for AI-generated patterns with multi-model analysis.

Free & unlimited Multi-model analysis Per-sentence scoring
Text to Analyze 0 words

Free & unlimited · Ctrl+Enter to submit

Results

Paste at least 30 words above and click Analyze Text to check for AI-generated patterns

How It Works

  1. 1

    Paste Your Text

    Copy and paste the text you want to analyze. Works with essays, articles, emails, reports, or any written content. Minimum 30 words for accurate results.

  2. 2

    Multi-Model Analysis

    Three detection models run simultaneously -- statistical analysis, pattern matching, and ensemble scoring -- to cross-validate results and minimize false positives.

  3. 3

    Get Detailed Report

    Receive an overall AI score, per-sentence color-coded breakdown, and specific patterns detected. If scores are high, send the text to our Humanizer with one click.

What We Analyze

Statistical Model

Measures sentence length variance, vocabulary richness, and structural patterns. AI text tends to be more uniform than human writing.

Pattern Model

Identifies AI-typical phrases, transition patterns, and sentence starters that LLMs commonly produce. Detects cliches like "it's important to note."

Ensemble Model

Combines both models with weighted scoring and confidence calibration. Reduces false positives by requiring agreement across methods.

Use Cases

Teachers Checking Student Work

Quickly screen essays and assignments for AI-generated content. Per-sentence analysis helps identify which sections may need discussion with the student.

Students Self-Checking

Run your own work through the detector before submitting. If you used AI for brainstorming, make sure the final version reads as authentically yours.

Publishers Screening Content

Content editors can verify articles and blog submissions are original human writing before publishing, maintaining editorial standards and audience trust.

Researchers Verifying Originality

Check research papers and grant proposals for AI fingerprints. Ensure your academic writing maintains the rigor and authenticity expected in scholarly work.

Frequently Asked Questions

How accurate is the AI detector?
Our detector uses multiple analysis models (statistical, pattern, and ensemble) to provide a comprehensive assessment. While no detector is 100% accurate, our multi-model approach provides reliable results for most content. Always use the results as guidance, not absolute proof.
Is the detector free?
Yes, the AI detector is completely free and unlimited. No signup required. You can analyze as many texts as you want with no daily limits.
What does the per-sentence analysis show?
Each sentence is individually scored for AI likelihood. Green sentences appear human-written, yellow sentences are mixed, and red sentences show strong AI patterns. This helps you identify which specific parts need humanizing.
Can I humanize the detected text?
Yes! If your text scores high on AI detection, click the "Humanize This Text" button to send it directly to our AI Humanizer tool, which will rewrite it to sound natural.
What is analyzed?
We check sentence length variance (AI is too uniform), vocabulary richness, AI-typical phrases and patterns, sentence starter diversity, and writing structure. No data is stored or shared.

Coda One's AI Content Detector analyzes text using multiple detection models -- statistical analysis, pattern matching, and ensemble scoring -- to determine whether content was written by AI or a human. Get per-sentence breakdowns with color-coded scores, and instantly send high-scoring text to our AI Humanizer for rewriting.

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