Multi-Detector Simulator
Test your text against 8 major AI detectors in a single scan. See exactly which detectors will flag your content before you submit or publish.
Text to Test
Up to 5,000 words18 powerful features
The most comprehensive multi-detector simulation tool available. Know your score before they do.
8+ Detector Simulation
Test your text against 8 major AI detectors in a single run: Turnitin, GPTZero, Originality.ai, Copyleaks, Winston AI, Content at Scale, ZeroGPT, and Sapling AI.
Turnitin Simulation
Simulate the detection algorithm used by Turnitin's AI writing detector — deployed across 16,000+ institutions. See your score before your professor does.
GPTZero Simulation
Simulate GPTZero's detection model, the most widely used standalone AI detector with 19M+ users. Get your perplexity and burstiness scores.
Originality.ai Simulation
Simulate Originality.ai's 3.0 model — the strictest AI detector on the market. Know if your content will pass the toughest checker before publishing.
Copyleaks Simulation
Simulate Copyleaks AI Detector — used by enterprises and publishers. See your AI probability score and passage-level analysis.
Winston AI Simulation
Simulate Winston AI's detection engine — favored by education platforms. Get your AI likelihood score with confidence intervals.
Instant Multi-Scan
All 8 detectors run in parallel. Get results from every detector in under 5 seconds — no waiting for sequential scans or queue processing.
Comparative Score Dashboard
View all detector scores side-by-side in a unified dashboard. Compare results, spot patterns, and see which detectors flag your text and which pass it.
Pass/Fail Summary
Get an instant pass/fail verdict for each detector. Green = likely human, yellow = mixed signals, red = likely AI. Know exactly where you stand.
Pass Rate Percentage
See your overall pass rate across all detectors. "7/8 detectors passed" gives you confidence before submission. Aim for 8/8.
Re-Scan After Editing
Edit your text and re-scan instantly. Make changes based on detector feedback and verify improvements in real-time without starting over.
Passage-Level Breakdown
See which specific sentences or passages trigger AI detection. Each flagged passage is highlighted with its individual AI score per detector.
Export Full Report
Download a comprehensive detection report as .txt or .pdf. Includes all detector scores, passage breakdowns, and recommendations — perfect for documentation.
Sensitivity Adjustment
Adjust detector sensitivity from lenient to strict. Simulate how your text would score under different detection thresholds and institutional settings.
AI Pattern Heatmap
Visual heatmap showing where AI-like patterns cluster in your text. Red zones indicate high AI probability, green zones indicate human-like writing.
One-Click Humanize Link
Flagged by detectors? Click "Humanize This Text" to send your content directly to our Advanced AI Humanizer Pro for instant humanization and re-verification.
Scan History
Your last 10 scans are saved locally in your browser. Compare scores over time as you edit and improve your text to track your progress.
Citation-Aware Scanning
The simulator recognizes and excludes APA, MLA, and Chicago citations from AI scoring. Your references won't artificially inflate your AI score.
3-step process
From pasting text to a full multi-detector report in seconds.
Paste & Configure
Paste your text (up to 5,000 words), select sensitivity level (lenient, standard, strict), and click "Scan All Detectors." All 8 detectors run in parallel.
Multi-Detector Analysis
Our engine simulates each detector's unique algorithm — Turnitin's pattern matching, GPTZero's perplexity scoring, Originality.ai's strict model — and compiles results in real-time.
Review & Act
Review your pass/fail summary, passage-level breakdown, and heatmap. If flagged, click "Humanize This Text" to send your content to our Pro Humanizer for instant fixing.
Frequently asked questions
Is this the same as actually running my text through Turnitin?
No. This is a simulation that approximates how each detector would score your text based on known detection patterns (perplexity, burstiness, vocabulary diversity, sentence variation). It's highly accurate for estimation but cannot guarantee identical results to the actual detectors.
How accurate is the simulation?
Our simulation is typically within 5-10% of actual detector scores. We continuously calibrate our models based on real-world testing. Use it as a reliable pre-check before submission, not as a guarantee.
What does the sensitivity setting do?
Lenient mode simulates detectors at their lowest sensitivity (fewer false positives). Standard mode uses default thresholds. Strict mode simulates maximum sensitivity — useful for testing against the most aggressive institutional settings.
Can I humanize text directly from the simulator?
Yes. If your text is flagged by any detector, a "Humanize This Text" button appears. Clicking it sends your text to our Advanced AI Humanizer Pro, where you can humanize and then re-scan to verify improvement.
How much does it cost?
Multi-Detector Simulator is included in the HumanAI Premium plan at $9.99/month, which gives you unlimited access to all 15 tools including the Advanced AI Humanizer Pro and Batch Humanization.
Is my text stored or shared?
No. All analysis happens client-side in your browser. Your text is never sent to any server, stored, or logged. Zero data retention — guaranteed.
Who is it for?
Multi-Detector Simulator is built for a wide range of users. See how it fits your needs.
Students
Before submitting to Turnitin, verify your text passes all major detectors. Fix any failures before it counts.
Content Agencies
Verify client deliverables pass all major detectors before delivery. Provide simulation reports as proof of quality.
Publishers
Screen all submissions across multiple detectors in one pass. Maintain publication standards with documented verification.
SEO Teams
Verify content passes AI detection across all platforms before publishing. Protect your search rankings.
Why Multi-Detector Simulator?
See what sets us apart from the competition.
Stop Guessing
Don't wonder if your text will pass — know for certain. Test against all major detectors in one run and see exactly where you stand.
Save Time & Money
Running your text through 6 detectors individually costs time and money. We simulate all of them in one pass for a fraction of the cost.
Calibrated Accuracy
Our simulations are continuously calibrated against real detector outputs, maintaining 90%+ correlation with actual results.
Actionable Intelligence
Don't just get scores — get recommendations. We tell you exactly what to fix and which passages to target for each failing detector.
Know Your Score Before They Do
Get Multi-Detector Simulator plus all 15 tools for $9.99/month. Test against 8+ detectors, humanize flagged content, and verify — all in one place.