O
OAI content detection, plagiarism and fact checking for publishers and educators
Free, from $12.95/mo
GPTZero vs WordAi
Pricing, features, platforms and who each one suits — side by side.
G
Choose GPTZero if…
- you want a free plan to start with
- you work on Chrome
- you're in its core audience: teachers and educators, students
W
Choose WordAi if…
- you want to trial it before paying
- you're in its core audience: seo publishers, content marketers
Side by side
Feature GPTZero WordAi
Pricing modelFreemiumFree trial
Starting price—$9/mo
Free plan
Free trial
API
Open source
Cost per 1,000 words processed—$0.34
Security and complianceSOC 2 Type II, CCPA, GDPR—
Plagiarism checker—
Writing replay—
Docs/LMS integration—
PlatformsWeb, Chrome, APIWeb, API
CategoryAI Detection & HumanizersParaphrasing & Rewriting
CompanyGPTZero LLCCardinell Enterprises LLC dba Cortx
Based inUnited StatesUSA
Founded2023—
Part of——
Key features
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
W WordAi
- Sentence restructuring and splitting
- Adjustable creativity level
- Up to 1,000 rewrites per article
- Bulk rewriting and bulk export, including spintax
- HTML support and code view
- Spelling and grammar fixes
- Article Forge integration for importing articles
- API for adding rewriting to workflows
Plans and prices
From each vendor's site. Prices change — confirm before buying.
GPTZero
FreeFree
Professional TeamPrice not shown on page
WordAi
Starter$17/mo or $9/mo billed annually
Power$57/mo or $27/mo billed annually
EnterpriseCustom
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
WordAi
- Annual billing cuts the price to $9/mo for Starter
- 3-day free trial plus a 30-day money-back guarantee
- API access on the Starter and Power plans
- Power plan includes 3,000,000 rewrite words a month
- No free plan, only a time-limited trial
- Refund applies only if you have rewritten fewer than 10 articles
- No desktop or mobile apps listed
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy