GPTZero alternatives

At a glance

We list 7 other AI detection tools as alternatives to GPTZero: Originality.ai, Pangram, Reality Defender, Sapling, Undetectable AI, Winston AI and ZeroGPT.
Originality.ai, Pangram, Reality Defender, Sapling, Winston AI and ZeroGPT have a free plan.
Originality.ai, Pangram, Sapling and Undetectable AI work with Google Docs, as GPTZero does.
Originality.ai, Pangram and Winston AI work with Google Classroom, as GPTZero does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.

7 alternatives

Listed alphabetically. A tool is ranked by its reviews once it has 3.

Originality.ai
An AI detector that identifies whether text was generated by platforms like ChatGPT, Gemini and Claude.
No reviews yet
Choose it over GPTZero for: Firefox or Moodle; integration with Moodle, ChatGPT or Claude.
Free plan
Yes
Paid plans from
Pro, $12.95 per month, billed yearly (as of November 14, 2026)
Platforms
Chrome, Firefox, Moodle
Integrations shared with GPTZero
Google Classroom, Google Docs
Main features
AI checker, Plagiarism checker, Bulk scan
Compare with GPTZero
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Pangram
An AI checker for ChatGPT, Claude and Gemini text.
No reviews yet
Choose it over GPTZero for: integration with Moodle or Gmail.
Free plan
Yes
Paid plans from
Individual, $20 per month (as of November 14, 2026)
Free trial
7 days
Platforms
Chrome
Integrations shared with GPTZero
Canvas, Google Classroom, Google Docs
Main features
AI segment analysis, AI assistance detection, Similarity checker
Security and compliance
SOC 2
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Reality Defender
Detect deepfakes in audio, video, and images, and identify AI callers.
No reviews yet
Choose it over GPTZero for: Web.
Free plan
Yes
Paid plans from
Business, $399 (as of November 14, 2026)
Platforms
Web
Main features
Browser file review, Live call detection, Meeting analysis
Compare with GPTZero
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Sapling
Free AI detector that checks if text is AI-generated.
No reviews yet
Choose it over GPTZero for: Firefox, Edge, Mac or Windows; integration with Zendesk, Salesforce or Slack; SSO.
Free plan
Yes
Paid plans from
Pro, $25 per month, or $12 per month billed annually (as of November 14, 2026)
Free trial
1 month
Platforms
Chrome, Firefox, Edge, Mac, Windows
Integrations shared with GPTZero
Google Docs
Main features
Sentence-level scores, PDF and Word checks, Web page checks
Security and compliance
SSO
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Undetectable AI
Detect AI, humanize your writing, and enhance your creative work.
No reviews yet
Choose it over GPTZero for: integration with Gmail.
Free trial
Yes
Platforms
Chrome
Integrations shared with GPTZero
Google Docs
Main features
AI detector, AI humanizer, AI image detector
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Winston AI
AI content detector and plagiarism checker for ChatGPT, Claude, Google Gemini and more.
No reviews yet
Choose it over GPTZero for: integration with WordPress or Zapier.
Free plan
Yes
Paid plans from
Essential, $18 per month, monthly billing (as of November 14, 2026)
Free trial
14 days
Platforms
Chrome
Integrations shared with GPTZero
Google Classroom
Main features
AI content detection, Plagiarism detection, AI image detection
Security and compliance
GDPR
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ZeroGPT
AI detection, plagiarism checking, and writing tools.
No reviews yet
Choose it over GPTZero for: WhatsApp or Telegram; integration with WhatsApp or Telegram.
Free plan
Yes
Plans
Free: $0 (as of November 14, 2026)
Platforms
WhatsApp, Telegram
Integrations shared with GPTZero
None in common
Main features
Highlighted sentences, Batch file upload, PDF reports
Compare with GPTZero
Be the first to review

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From reviews of other tools that say they used GPTZero before.

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At a glance

We list 7 other AI detection tools as alternatives to GPTZero: Originality.ai, Pangram, Reality Defender, Sapling, Undetectable AI, Winston AI and ZeroGPT.

Originality.ai, Pangram, Reality Defender, Sapling, Winston AI and ZeroGPT have a free plan.

Originality.ai, Pangram, Sapling and Undetectable AI work with Google Docs, as GPTZero does.

Originality.ai, Pangram and Winston AI work with Google Classroom, as GPTZero does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.