O
OAI content detection, plagiarism and fact checking for publishers and educators
Free, from $12.95/mo
GPTZero vs Humbot
Pricing, features, platforms and who each one suits — side by side.
G
Choose GPTZero if…
- you work on Chrome
- you're in its core audience: teachers and educators, students
H
Choose Humbot if…
- you're in its core audience: students, content writers
Side by side
Feature GPTZero Humbot
Pricing modelFreemiumFreemium
Starting price——
Free plan
Free trial
API
Open source
Security and complianceSOC 2 Type II, CCPA, GDPR—
Sentence-level highlights—
Plagiarism checker—
Writing replay—
Bulk processing—
Shareable reports—
Docs/LMS integration—
PlatformsWeb, Chrome, APIWeb, API
CategoryAI DetectorsAI Humanizers
CompanyGPTZero LLC · United States · since 2023Humbot
Full feature lists
G GPTZero
- Detects text from ChatGPT, Claude and Gemini
- Highlights passages likely to be AI-generated
- Writing Replay shows how a document was typed
- Plagiarism checker for unattributed content
- Hallucination detector
- Grammar check and writing feedback
- Google Docs, Google Classroom, Canvas and Zapier integrations
- API with code samples in 17 languages
H Humbot
- AI text humanizer for AI-generated content
- AI content checker and AI image detector
- Plagiarism checker and grammar checker
- Gemini-powered article rewriter
- Translator covering 100+ languages
- Math solver, homework helper and question AI
- Quiz generator, flashcard maker and summarizer
- ChatPDF and citation generator with 40+ styles
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
GPTZero · gptzero.me
Humbot · humbot.aiWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
What the free plans include
GPTZero
- 0 / 10,000 characters per scan in the AI detector box
Humbot
Free plan limits aren't published.
All plans and prices
GPTZero
FreeFree
Professional TeamPrice not shown on page
Humbot
BasicNot listed
ProNot listed
UnlimitedNot listed
Strengths and limitations
GPTZero
- Free tier available to get started
- Integrates with Google Docs, Google Classroom, Canvas and Zapier
- Fully supports five languages
- States SOC 2 Type II, FERPA, GDPR and CCPA compliance
- Individual plan prices could not be read from the pricing page
- Team plan requires at least 2 seats and payment by card only
- No native mobile apps mentioned
Humbot
- Writing, detection and study tools in one subscription
- Credits work across all tools
- 30-day money-back guarantee
- Vendor says it is ISO 27001 and SOC 2 certified and does not store or train on documents
- Basic plan limits each request to 500 words
- Advanced word allowance is capped on every plan
- Plan upgrades take effect from the next billing cycle
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Facts from each vendor's public pages, prices checked Nov 5, 2026. Editorial policy