Originality.ai

What is Originality.ai?

Originality.ai is a web tool that scans text for AI-generated writing and plagiarism, with additional checks for grammar, readability, factual accuracy and content quality. You paste text, upload a Word or PDF file, or enter a URL, and the report scores the content and highlights the sentences most likely to be AI-written. A Deep Scan shows why text was flagged and how to edit it, and the company says its detector is trained to spot paraphrased AI text. A Chrome extension lets you run scans in Google Docs and share a replay of the writing process as proof of authorship, and there is a Firefox extension, a Moodle plugin, Google Classroom support and an API. Teams can assign roles, tag scans and run full-site scans. Plans are Free with a one-time 10K words of credits, Pro at $12.95/month billed annually and Enterprise at $136.58/month billed annually, with monthly billing at higher rates.

Use cases

• Detect AI-written content in drafts
• Check articles for plagiarism
• Verify freelancer submissions before publishing
• Review facts and flag hallucinations
• Scan whole websites for AI content
• Check student work for AI use
• Show authorship with a writing replay
• Score readability and grammar

Who it's for

• Publishers and agencies
• Content marketers and SEO teams
• Teachers and schools
• Writers and students

Why use Originality.ai

• One scan covers AI detection, plagiarism and quality checks, so you do not need separate tools.
• Sentence highlights and Deep Scan tips show which parts of a text drew a flag.
• Writing replay gives writers and students a way to show their drafting process.
• Team roles, tags and bulk scans suit agencies reviewing many freelancer submissions.
• You can opt out of having your data used for AI training and delete your scan history in one click.

Originality.ai features

• AI detection with sentence-level highlights
• Plagiarism checker
• Fact and hallucination checking aid
• Grammar, spelling and readability checks
• Deep Scan explanation of flagged text
• Writing replay through the Chrome extension
• Upload docx, doc and pdf files or paste text
• Full site scans
• Team roles and tagged scans
• Shareable and downloadable PDF reports

Originality.ai integrations

• Google Docs
• Google Classroom
• Moodle

How to get started with Originality.ai

1. Add text by pasting it, uploading a file or entering a URL.
2. Choose the scans to run, such as AI detection, plagiarism, grammar or readability.
3. Review the score for each scan and the highlighted sentences.
4. Use Deep Scan tips to edit flagged text, then scan again, and share or download the report.

Originality.ai limitations

• The Free plan includes 10K words (100 credits) one time
• One credit covers 100 words
• API access is listed as Enterprise only
• Scan history is kept for 30 days on Pro and 365 days on Enterprise

Originality.ai pricing

Yes, Originality.ai has a free plan. Paid plans start at $12.95 per month, according to the official pricing page on 24 Oct 2026.

Originality.ai plans

• Free

  $0

  no subscription required

  • 10K words (100 credits) one time
  • Buy more credits
  • AI, plagiarism and readability checks
  • Chrome extension

• Pro

  $12.95/month

  billed annually; $14.95/month billed monthly

  • For individuals and small teams
  • All checkers
  • 30-day scan history
  • Standard support

• Enterprise

  $136.58/month

  billed annually; $179/month billed monthly

  • 1.5M words (15K credits) per month
  • API access
  • 1 year scan history
  • Priority support
  • Extra team seats at $19.04/month billed annually

Plans as listed on the official pricing page on 24 Oct 2026. Prices can change and may vary by country or exclude tax. Check the official pricing page.

Originality.ai alternatives

The main Originality.ai alternatives listed on Debuly are GPTZero, Grammarly, Clever AI Humanizer, Authors A.I., Humanizer PRO and Midgen. The table compares pricing and platforms; order is A–Z.

1. 

   Authors A.I.

   Analytical AI for novelists: Marlowe reports on plot, pacing and market fit, comparing your manuscript with bestsellers without writing for you.

   WritingMarketing and SEO
   FreemiumVisit Authors A.I. (official site)
2. 

   Clever AI Humanizer

   Free web tool that rewrites AI-assisted drafts for more natural tone and sentence variety, plus a detector, paraphraser and grammar checker.

   WritingMarketing and SEOProductivity
   FreeVisit Clever AI Humanizer (official site)
3. 

   GPTZero

   AI content detector that checks whether text was written by a person or a model, with sentence-level highlights and writing reports.

   WritingProductivityDeveloper platforms
   FreemiumVisit GPTZero (official site)
4. 

   Grammarly

   AI writing assistant that fixes grammar, adjusts tone, rewrites sentences and drafts text in the apps and sites where you write.

   WritingProductivityMarketing and SEO
   FreemiumVisit Grammarly (official site)
5. 

   Humanizer PRO

   Text rewriting tool that edits AI-assisted drafts into more natural prose in Stealth, Academic or SEO modes, with a built-in AI score scan.

   WritingMarketing and SEO
   FreemiumVisit Humanizer PRO (official site)
6. Mi

   Midgen

   AI writing platform with an article writer, text humanizer, AI detector and a novel-writing editor.

   WritingMarketing and SEO
   FreemiumVisit Midgen (official site)

Originality.ai FAQ

Sources & verification

Facts on this page come from the official sources below, each with the date we read it. Written by Debuly; the vendor did not review this page.

Image credits

• Logo: from cdn.prod.website-files.com · fetched 24 Oct 2026 · Vendor trademark, used only to identify the product; removed on request
• Cover: none collected yet, so a generated tile is shown.

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