Pangram Labs
The most accurate AI detector with 99.98% accuracy. Detect AI-generated text, identify which AI model wrote it, and distinguish between human and AI-assisted content.
Try Pangram Free →
The Most Accurate AI Detector
for High-Stakes Verification
Pangram Labs delivers 99.98% accuracy with an industry-leading 1/10,000 false positive rate. The Pangram 3.0 update adds revolutionary AI Assistance Detection—the first tool that can tell you how much AI was involved, not just whether it was used.
✓ What We Love
- Unmatched 99.98% detection accuracy
- AI Assistance Detection (4 tiers)
- Identifies which AI model was used
- Detects paraphrased/QuillBot text (97%)
! Could Be Better
- Premium pricing ($20/month)
- No mobile app yet
- Minimum 50-word requirement
See Pangram in Action
Real screenshots from Pangram 3.0's AI detection interface.
Clean Detection Interface
Paste text or upload documents for instant AI analysis
Pangram 3.0 AI Score Results
Clear verdict with confidence breakdown
AI Phrases Highlighting
See exactly which phrases triggered detection
Ready to verify your content with the most accurate AI detector?
Try Pangram Free →5 free daily credits • No credit card requiredHow Pangram Works
Submit Your Text
Paste text directly (50-5,000 words) or upload TXT, DOCX, or PDF files. The interface is clean and distraction-free.
Advanced AI Analysis
Pangram's "synthetic mirror" technology analyzes your text against patterns from GPT-4, Claude, Gemini, and other major AI models in 2-5 seconds.
Get Detailed Results
Receive a clear verdict: Fully Human, Lightly AI-Assisted, Moderately AI-Assisted, or Fully AI-Generated—with sentence-level breakdowns.
Review AI Phrases
See exactly which phrases triggered detection, with frequency counts showing how often certain AI patterns appear in your text.
Academic Validation
The University of Chicago found Pangram has error rates 38 times lower than other commercial tools, making it the only detector meeting stringent policy requirements.
Key Features
99.98% Detection Accuracy
Industry-leading accuracy validated by University of Chicago research. Detects GPT-4, Claude, Gemini, Llama, and more.
AI Assistance Detection
Pangram 3.0's breakthrough feature: distinguishes between fully AI-generated and AI-assisted content across 4 tiers.
AI Model Identification
Know which specific AI system (GPT-4, Claude, Gemini) likely generated the content. Forensic-level detail.
AI Phrases Highlighting
See exactly which sentences triggered detection with frequency counts showing AI pattern repetition.
Plagiarism Detection
Combined AI and plagiarism checking for comprehensive content verification in one tool.
Chrome Extension
Real-time AI detection while browsing. Check content instantly without leaving your browser.
Batch Processing
Process multiple documents at once. Perfect for educators grading assignments or content teams.
API Access
Integrate AI detection into your own applications with webhooks and custom integrations.
Pricing Plans
Save 25% with annual billing ($180/year vs $240).
Premium
Enterprise
Educational discount: Up to 50% off for schools and universities
Is Premium Worth It?
For educators processing 50+ papers monthly, Premium pays for itself in time saved on manual review.
Detailed Pros & Cons
✓ Pros
Scientifically validated by University of Chicago as the most accurate AI detector available. Error rates 38x lower than competitors.
Revolutionary Pangram 3.0 feature distinguishes between fully AI-generated and lightly edited content—no other tool does this.
1/10,000 false positive rate means you can trust the results. Won't wrongly accuse human writers of using AI.
97% accuracy on QuillBot and other paraphrasing tools. Catches "humanized" AI content that other detectors miss.
Know specifically which AI (GPT-4, Claude, Gemini) generated the text. Forensic-level insight for high-stakes verification.
✗ Cons
At $20/month, it's double the cost of GPTZero ($10/mo). Worth it for professionals, but budget users may prefer alternatives.
Mobile web experience works but feels cramped. Native iOS/Android apps are on the roadmap but not yet available.
Can't analyze short texts like social media posts or brief emails. Need at least 50 words for accurate detection.
Primarily English-focused. Spanish, French, and German support improving in 2026, but not comprehensive yet.
No offline capabilities. Requires internet connection for all analyses—limiting for restricted network environments.
Pangram vs Alternatives
How does Pangram stack up against the competition?
| Feature | Pangram Labs | GPTZero | Turnitin | QuillBot |
|---|---|---|---|---|
| Accuracy | 99.98% | ~89% | Varies | ~78-80% |
| False Positive Rate | 1/10,000 | ~4-12% | ~1-4% | Moderate |
| Detects Paraphrased? | ✓ 97% (Best) | 40-60% | Moderate | Low (own tool) |
| AI Model ID | ✓ Yes | Limited | No | No |
| Starting Price | $20/mo | $10/mo | Institutional | $4.17/mo* |
| Best For | High-stakes | Budget users | Universities | Students |
Which Tool Is Right For You?
Pangram Labs
Most AccurateBest for: Academic institutions, legal teams, publishers, and anyone where false accusations could have serious consequences. The 1/10,000 false positive rate makes it the safest choice for high-stakes verification.
GPTZero
Budget PickBest for: Educators on a budget who need daily classroom checks. Good accuracy at half the price, with useful features like "Origin" typing replay videos.
Turnitin
InstitutionalBest for: Universities with existing LMS integrations (Canvas, Blackboard). Lower accuracy than Pangram but deeply embedded in academic workflows.
QuillBot
All-in-OneBest for: Students who want writing improvement tools (paraphraser, grammar checker) with a basic AI detector included. Not recommended for professional verification.
Frequently Asked Questions
Should You Try Pangram?
Pangram 3.0 represents a breakthrough in AI detection technology. With 99.98% accuracy, the revolutionary AI Assistance Detection feature, and academic validation from the University of Chicago, Pangram is the most reliable AI detector available for high-stakes verification.
The $20/month premium price is justified for educators, legal teams, publishers, and anyone where false accusations could have serious consequences. For casual users on a budget, GPTZero offers good value at half the price.
Our Recommendation
Start with the free tier (5 daily credits) to test accuracy on your specific use case. If you process 50+ documents monthly or need the AI Assistance Detection feature, upgrade to Premium—the 7-day trial gives you full access risk-free.
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