GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Squibler records 384,827 monthly visits with -10.4% growth and Freemium pricing.
AI detection and writing verification built for schools and editors
Chat with AI to turn an idea into a full-length book, novel, or screenplay
| Dimension / Metric | ||
|---|---|---|
| Official Domain | gptzero.me | squibler.io |
| Pricing Model | Freemium, Paid | Freemium |
| Monthly Visits | 23.25M (23,246,989) | 384.83K (384,827) |
| MoM Traffic Delta | +5.7M (+32.5%) | -44.67K (-10.4%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇺🇸 United States (40%) |
| Direct Visits / mo | 7.53M | 193.26K |
| User Rating | 4.1 | 4.1 |
| Supported Platforms | Website | Website |
AI detection and writing verification built for schools and editors
Paste text or upload a document and get an overall AI probability score plus a sentence-by-sentence breakdown of which parts look machine-written.
Flags AI text from major model families including ChatGPT, Gemini, Claude, Llama, and others, rather than training for a single model.
A Chrome extension and Google Docs add-on bring scanning into Gmail, Docs, Classroom, and other surfaces you already work in.
Checks content for copied passages from outside sources so you can separate AI-generation questions from originality questions.
Chat with AI to turn an idea into a full-length book, novel, or screenplay
Generate a structured first draft of a full-length book, novel, or screenplay organised into chapters and scenes, based on your concept, genre, and core elements.
An AI co-author analyses your text, proposes revisions toward a stated objective, and iterates with you while you accept, reject, or refine every suggestion.
Create structured characters, settings, and key details that the AI references during writing so motivations stay consistent and contradictions are avoided.
Highlight passages to generate original images or short video sequences inspired by your scenes, useful for covers, storyboards, and promotional assets.
Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
Offers powerful unconstrained long-form storytelling models and image generation, but has less structured book-planning guidance.
Offers powerful unconstrained long-form storytelling models and image generation, but has less structured book-planning guidance.
SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.
SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.
Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users.
Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users.
Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.
Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.
Great for interactive narrative generation and worldbuilding, but lacks Squibler's dedicated book and chapter organization workspace.
Great for interactive narrative generation and worldbuilding, but lacks Squibler's dedicated book and chapter organization workspace.
Purpose-built for fiction authors with advanced brainstorming and chapter outlining tools, but lacks dedicated screenplay formatting.
Purpose-built for fiction authors with advanced brainstorming and chapter outlining tools, but lacks dedicated screenplay formatting.
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score
SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.
SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.
