Originality.ai Review 2026: Does It Catch AI Text?

Originality.ai is worth it if you publish or buy written content and need to check it for AI use and plagiarism before it goes live. It has a free plan with 3 scans a day, and paid plans start at $12.95/mo. It is less suited to anyone wanting unlimited free scans.

What Is Originality.ai?

Originality.ai is an AI detector and plagiarism checker built for content teams, publishers, and agencies. It checks text for AI-generated content and plagiarism, and adds readability, grammar, and fact-checking on top. It is built to stay current against the latest models such as GPT, Claude, Gemini, DeepSeek, and Llama, and to catch text rewritten with AI paraphrasing tools like Quillbot.

Key Features

• AI Checker — accuracy tracked across GPT, Claude, Gemini, DeepSeek, Llama, and more
• Paraphrase detection — flags AI text run through tools like Quillbot or Grammarly
• Plagiarism, grammar, readability, and fact checkers in one scan
• AI Allowance — set how much AI content is acceptable
• Deep Scan — explains why text was flagged and how to edit it, with sentence-level highlights
• Full-site scans from a URL on Pro and Enterprise
• Shareable PDF reports, scan history, Chrome and Firefox extensions, Google Classroom and Moodle plugins

Originality.ai Pricing

Plan	Price	What You Get
Basic	Free	AI detection only, 3 scans per day, 2,000 words per scan, file upload
Pro	$12.95/mo	2,000 credits/mo (1 credit = 100 words), full-site scans, team management, Chrome extension
Enterprise	$136.58/mo	15,000 credits/mo, 365 days of scan history, API access, dedicated success manager

Pros and Cons

Pros

• Reported accuracy in third-party AI-detection studies, kept current against new models
• Also flags AI-paraphrased text
• Bundles plagiarism, readability, grammar, and fact-checking in one scan
• Full-site scans make auditing existing content fast
• Usable free tier with no subscription

Cons

• Free plan is capped at 2,000 words per scan and 3 scans a day
• Credits expire monthly rather than rolling over
• API access and full scan history are Enterprise-only

Who Should Use Originality.ai?

Originality.ai suits content teams, publishers, and agencies verifying freelance or outsourced writing, and teachers checking student work. No detector is perfect, so treat scores as a signal to review a piece, not as proof. It is less useful if you only need an occasional check on short text, where the free plan may be enough.

Originality.ai Alternatives

If you need to make AI text read as human instead of detecting it, see StealthWriter and Undetectable AI, or read the StealthWriter review and our AI humanizer collection.

FAQ

Is Originality.ai free? Yes. The Basic plan is free with no subscription, offering 3 AI scans per day up to 2,000 words each.

Can it detect paraphrased AI text? Yes, it is trained on adversarial data and tested against paraphrasing tools like Quillbot and Grammarly.

Can I scan a whole website? Yes, Pro and Enterprise plans support full-site scans from a URL.

Does it check plagiarism too? Yes, along with grammar, readability, and fact-checking.

See Originality.ai's full listing on AIPick →