AI detection and writing verification built for schools and editors

12 alternatives to GPTZero: AI Detection & Writing Replay, matched by what they do.
| Rank | Tool & Tagline |
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| MoM Growth |
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| Pricing Model |
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| ● | GPTZero: AI Detection & Writing Replay | chrome.google.com | 0 | 0 (—) | Freemium | Global | 4.5 | Profile |
| 1 | GPTZero | gptzero.me | 23.25M | 5.7M (+32.5%) | Freemium, Paid | United States | 4.1 | Compare |
| 2 | ZeroGPT | zerogpt.com | 32.86M | 5.41M (+19.7%) | Freemium, Paid | United States | 3.8 | Compare |
| 3 | GPT-Zero | gpt-zero.cc | 1.74K | 1.48K (+564.1%) | Freemium | Argentina | 3.4 | Compare |
| 4 | ZeroGPT Plus | zerogpt.plus | 134.64K | 23.41K (+21%) | Freemium | United States | 3.8 | Compare |
| 5 | Undetectable AI | undetectable.ai | 3.11M | 464.72K (+17.5%) | Freemium | United States | 3.8 | Compare |
| 6 | Isgen AI Detector | isgen.ai | 901.92K | 49.42K (+5.8%) | Freemium | South Korea | 3.8 | Compare |
| 7 | ZeroGPT.CC | zerogpt.cc | 78.74K | -7.07K (-8.2%) | Freemium | United States | 3.6 | Compare |
| 8 | Detecting-AI.com | detecting-ai.com | 505.15K | 419.96K (+493%) | Freemium, Paid | United States | 3.8 | Compare |
| 9 | AI Detector Writer | aidetectorwriter.com | 111.13K | 32.63K (+41.6%) | Free | Russia | 3.8 | Compare |
| 10 | MyDetector | mydetector.ai | 534.48K | 5.79K (+1.1%) | Free | United States | 3.5 | Compare |
| 11 | Winston AI | gowinston.ai | 604.45K | 31.17K (+5.4%) | Freemium, Free Trial | United States | 4.2 | Compare |
| 12 | Originality.ai | originality.ai | 2.05M | 55.72K (+2.8%) | Paid | United States | 4 | Compare |
AI detection and writing verification built for schools and editors
AI content detection and a full writing toolkit in one place
AI content detection and a full writing toolkit in one place

SpecialistCheck in seconds whether a passage was written by a human or an AI
SpecialistCheck in seconds whether a passage was written by a human or an AI

Free AI detector with sentence-level reports for ChatGPT, Gemini & Claude text
Free AI detector with sentence-level reports for ChatGPT, Gemini & Claude text
Detect, humanize and verify AI content in one place
Detect, humanize and verify AI content in one place

Multilingual AI detector with sentence-level insight
Multilingual AI detector with sentence-level insight
Free AI content detector with sentence-level analysis
Free AI content detector with sentence-level analysis
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score

Free, unlimited AI content detection with sentence-level scoring
Free, unlimited AI content detection with sentence-level scoring

Free AI detector with sentence-level insight and a humanizer
Free AI detector with sentence-level insight and a humanizer

Detect AI-generated text and images with benchmark-tested accuracy
Detect AI-generated text and images with benchmark-tested accuracy

AI detector, plagiarism and content-quality checks in one scan
AI detector, plagiarism and content-quality checks in one scan