GPTZero: Industry standard for academic AI detection, but lacks the robust content humanization and multi-tool writing suite. GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Smodin records 251,633 monthly visits with -10.3% growth and Paid pricing.
AI detection and writing verification built for schools and editors
Detect AI text, humanize it, and check plagiarism in one workspace
| Dimension / Metric | ||
|---|---|---|
| Official Domain | gptzero.me | smodin.io |
| Pricing Model | Freemium, Paid | Paid |
| Monthly Visits | 23.25M (23,246,989) | 251.63K (251,633) |
| MoM Traffic Delta | +5.7M (+32.5%) | -29.05K (-10.3%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇺🇦 Ukraine (7.4%) |
| Direct Visits / mo | 7.53M | 77.95K |
| User Rating | 4.1 | 3.9 |
| 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.
Detect AI text, humanize it, and check plagiarism in one workspace
Scan text for AI-generated patterns with sentence-level highlighting and a plain-language verdict covering writing from models like ChatGPT, Claude, and Gemini.
Rewrite AI-generated text so it reads naturally and more closely matches a human voice, useful before submitting essays, articles, or client work.
Check drafts against a broad index of sources to confirm originality and surface places that need proper citation.
Draft, outline, and refine content with an AI writing copilot and chat assistant that handles academic and SEO-oriented briefs.
SpecialistSuperior paraphrasing and grammar correction tools, but lacks dedicated AI content detection features found in Smodin.
SpecialistSuperior paraphrasing and grammar correction tools, but lacks dedicated AI content detection features found in Smodin.
Widely used AI detection and humanization platform, but offers fewer deep general writing assistant features than Smodin.
Widely used AI detection and humanization platform, but offers fewer deep general writing assistant features than Smodin.
SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
SpecialistAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
Stronger focus on bypassing AI detectors with advanced humanization algorithms, but less comprehensive academic writing assistance.
Stronger focus on bypassing AI detectors with advanced humanization algorithms, but less comprehensive academic writing assistance.
Specializes heavily in natural-sounding text humanization to evade AI detection, with fewer formal plagiarism checking options.
Specializes heavily in natural-sounding text humanization to evade AI detection, with fewer formal plagiarism checking options.
Enterprise-grade content integrity and plagiarism checking across multiple languages, but less consumer-focused writing tools.
Enterprise-grade content integrity and plagiarism checking across multiple languages, but less consumer-focused writing tools.
Provides much more rigorous AI detection and plagiarism checking for professional publishers, though with fewer free features.
Provides much more rigorous AI detection and plagiarism checking for professional publishers, though with fewer free features.
One workspace to write, check and summarize
One workspace to write, check and summarize
One AI workspace to write, edit, detect, and humanize text
One AI workspace to write, edit, detect, and humanize text
Excels at rewriting and humanizing AI text to pass detection tests, but offers fewer general research writing tools.
Excels at rewriting and humanizing AI text to pass detection tests, but offers fewer general research writing tools.
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.
