Reality Defender alternatives

At a glance

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

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.

GPTZero
An AI detector that detects AI content and checks writing quality.
No reviews yet
Choose it over Reality Defender for: Chrome or Google Docs.
Free plan
Yes
Paid plans from
Premium, A$17.99 per month, billed annually (as of November 14, 2026)
Platforms
Chrome, Google Docs
Main features
AI detection, Writing replay, Plagiarism checker
Security and compliance
SOC 2, GDPR
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Originality.ai
An AI detector that identifies whether text was generated by platforms like ChatGPT, Gemini and Claude.
No reviews yet
Choose it over Reality Defender for: Chrome, Firefox or Moodle.
Free plan
Yes
Paid plans from
Pro, $12.95 per month, billed yearly (as of November 14, 2026)
Platforms
Chrome, Firefox, Moodle
Main features
AI checker, Plagiarism checker, Bulk scan
Compare with Reality Defender
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Pangram
An AI checker for ChatGPT, Claude and Gemini text.
No reviews yet
Choose it over Reality Defender for: Chrome.
Free plan
Yes
Paid plans from
Individual, $20 per month (as of November 14, 2026)
Free trial
7 days
Platforms
Chrome
Main features
AI segment analysis, AI assistance detection, Similarity checker
Security and compliance
SOC 2
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Sapling
Free AI detector that checks if text is AI-generated.
No reviews yet
Choose it over Reality Defender for: Chrome, Firefox, Edge, Mac or Windows.
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
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 Reality Defender for: Chrome.
Free trial
Yes
Platforms
Chrome
Main features
AI detector, AI humanizer, AI image detector
Compare with Reality Defender
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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 Reality Defender for: Chrome.
Free plan
Yes
Paid plans from
Essential, $18 per month, monthly billing (as of November 14, 2026)
Free trial
14 days
Platforms
Chrome
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 Reality Defender for: WhatsApp or Telegram.
Free plan
Yes
Plans
Free: $0 (as of November 14, 2026)
Platforms
WhatsApp, Telegram
Main features
Highlighted sentences, Batch file upload, PDF reports
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From reviews of other tools that say they used Reality Defender before.

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At a glance

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

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

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