Tool review · est. 2024
Pangram Labs
AI text detection verified by independent research
Visit Pangram Labs →pangram.com
Tier across use cases
Strengths
- Independently validated by University of Chicago and University of Maryland — 1-in-10,000 false positive rate is the strongest documented accuracy claim in the AI detection category.
- Four-tier classification system (introduced in Pangram 3.0, December 2025) distinguishes fully AI, AI-assisted, lightly edited, and human-written — more nuanced than binary detectors.
- Detects content from GPT-4, GPT-5, Claude 3.5/4, Gemini 1.5, Llama 3, DeepSeek, and other major models — broad coverage matters as the LLM landscape fragments.
- Segment-level analysis highlights specific sentences flagged as AI rather than verdict-on-whole-document — critical for educational use where partial AI use must be distinguished from full plagiarism.
- LMS integrations (Canvas, etc.) make institutional deployment straightforward.
Trade-offs
- Free tier is restricted to 5 daily credits — sufficient for evaluation but not for ongoing professional use.
- $20/mo is at the upper end of the AI detection category, double GPTZero's entry pricing.
- No plagiarism detection — Turnitin combines both AI and plagiarism in one tool; Pangram is AI-only.
- Detection accuracy fluctuates as new models release — the "arms race" dynamic is inherent to the category, not a Pangram-specific limitation.
- Non-English detection is still less reliable than English; multilingual coverage is improving but uneven.
Key features
- AI detection (99.98% accuracy, 1-in-10,000 false positive rate)
- AI model identification (which model wrote the text)
- Segment-level analysis with four-tier classification
- Chrome extension
- API access (Institution/Enterprise)
- LMS integrations (Canvas, etc.)
- Batch processing for institutional volume
- 20+ language support
Pricing
Freemium. Free tier (5 daily credits). Premium from $20/mo. 7-day premium trial. Independent academic validation by University of Chicago and University of Maryland (1-in-10,000 false positive rate).
Free
$0/mo
1 seat
- Basic AI detection
- Web interface
Premium
$20/mo
1 seat
- Full detection
- Chrome extension
- AI Assistance Detection
- Segment-level analysis
Institution / Enterprise
Custom
- LMS integrations (Canvas, etc.)
- API access
- Batch processing
- Custom pricing
What reviewers say
Best for
Educators, academic institutions, publishers, legal teams, and trust-and-safety professionals where false accusations carry serious consequences — particularly contexts requiring research-backed accuracy claims.
Frequently asked
- Who is Pangram Labs best for?
- Educators, academic institutions, publishers, legal teams, and trust-and-safety professionals where false accusations carry serious consequences — particularly contexts requiring research-backed accuracy claims.
- How is Pangram Labs ranked on TIERSAI?
- Pangram Labs earns A tier (8.67/10) for AI Content Detection. Every score uses the same transparent 0-to-10 scale across five axes.
- How much does Pangram Labs cost?
- Freemium. Free tier (5 daily credits). Premium from $20/mo. 7-day premium trial. Independent academic validation by University of Chicago and University of Maryland (1-in-10,000 false positive rate).
Ready to try Pangram Labs?
Start with the free or entry plan and test it on your own work — pricing and limits change often, so check the current options on their site.
Try Pangram Labs →