GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Surf records 116,252 monthly visits with -18.9% growth and Free, Pro, Max, API credits pricing.
AI detection and writing verification built for schools and editors
Institution-grade crypto and equities intelligence, delivered through a chat-style AI analyst.
| Dimension / Metric | ||
|---|---|---|
| Official Domain | gptzero.me | asksurf.ai |
| Pricing Model | Freemium, Paid | Free, Pro, Max, API credits |
| Monthly Visits | 23.25M (23,246,989) | 116.25K (116,252) |
| MoM Traffic Delta | +5.7M (+32.5%) | -27.18K (-18.9%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇰🇷 South Korea (32.6%) |
| Direct Visits / mo | 7.53M | 88.81K |
| User Rating | 4.1 | 4.2 |
| 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.
Institution-grade crypto and equities intelligence, delivered through a chat-style AI analyst.
Ask questions about tokens, protocols, or equities in plain language and receive answers backed by visible sources rather than unsupported assertions.
Market prices, onchain events, SEC filings, and news are normalized into one structured layer so the model reasons over consistent inputs.
API, MCP server, CLI, and agent skills let teams wire Surf intelligence into their own agents, dashboards, and internal research workflows.
Purpose-built modules for tracking market-moving developments and for looking up structured context on projects and 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.
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.
AI trading indicators, real-trade orderflow and charts in one platform
AI trading indicators, real-trade orderflow and charts in one platform
Global macro data and AI research platform for smarter economic decisions
Global macro data and AI research platform for smarter economic decisions
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.
SpecialistHumanize AI text and check it against AI detectors
SpecialistHumanize AI text and check it against AI detectors
