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Originality.ai

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What Originality.ai is

Originality.ai offers tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling, and content quality. Its free Basic plan includes three AI scans each day, with a limit of 2,000 words per scan. The AI detector offers configurable AI allowances of 0%, 5%, 15%, 25%, or 40%. A website scanner can crawl a site, identify pages likely to contain AI-generated content, and schedule scans. The browser extension scans Google Docs, web pages, or selected text, and includes writing replay, typing behavior insights, and shareable reports. A REST-based API can submit text for AI and plagiarism scans and return detailed results; the maker says AI detection supports 30 languages. API AI scans require at least 50 words, and the help page says accuracy decreases below 100 words. The terms describe detection outputs as probabilistic estimates that may produce false positives or false negatives, not conclusive proof. Pro costs $12.95 a month billed yearly, with a monthly option at $14.95/month. The product is available through web, API, and extension.

Who it suits

Originality.ai suits website owners, content marketers, writers, and publishers who need text or site checks. Its extension and API also support scanning selected text or integrating scan requests into other workflows.

What it does well

Free plan includes three daily scans
Website scanner can schedule site crawls
API supports AI detection in 30 languages
Extension scans Google Docs and selected text

What to know first

API AI scans require at least 50 words
Accuracy decreases below 100 words, according to help
Detection may produce false positives or false negatives
Pro credits expire monthly

Limits

Basic provides three AI detection scans per day, with a 2,000-word maximum per scan, and includes AI detection only. Pro includes 2,000 credits per month, with one credit covering 100 words; unused credits expire monthly. Enterprise includes 15,000 credits per month, with one credit covering 100 words; credits expire monthly.

Plans

Plan	Billed and limits	Price
Basic	AI detection only · 3 scans per day · 2,000 words per scan · DOCX/PDF/DOC upload	Free
Pro	$12.95/month billed yearly at $155.4 ($12.95 x 12 months); monthly option $14.95/month · 2,000 credits/month · 1 credit = 100 words · credits expire monthly · standard support · Chrome extension · additional team seats shown as $8.62/month annually or $9.95/month monthly	$12.95 a month
Pro (annual billing)	Billed yearly: $155.40 ($12.95 × 12) · 2,000 credits/month · 100 words per credit · credits expire monthly · team management · tags · Chrome extension · standard support	$12.95 a month
Enterprise	$136.58/month billed yearly at $1638.96 ($136.58 x 12 months); monthly option $179/month · 15,000 credits/month · 1 credit = 100 words · credits expire monthly · priority support · 365-day scan history · API access · additional team seats shown as $19.04/month annually or $24.95/month monthly	$136.58 a month
Enterprise (annual billing)	Billed yearly: $1,638.96 ($136.58 × 12) · 15,000 credits/month · 365-day scan history · API access · priority support · dedicated customer success manager · shareable reports	$136.58 a month
Pro (monthly billing)	Billed monthly · 2,000 credits/month · 100 words per credit · credits expire monthly · team management · tags · Chrome extension · standard support	$14.95 a month
Enterprise (monthly billing)	Billed monthly · 15,000 credits/month · 365-day scan history · API access · priority support · dedicated customer success manager · shareable reports	$179 a month

As originality.ai lists them, read 15 Oct 2026. The maker's own page has the final word.

Getting started

Open https://originality.ai/.
Use the free Basic plan for AI detection, with no subscription required.
Upload a DOCX, PDF, or DOC file, or scan within the web product.
Install the browser extension to scan Google Docs, web pages, or selected text.
Choose a paid plan for the plan features and credit allowances described on the pricing page.
Use the REST API or Moodle integration for those workflows.

Verdict

Originality.ai combines AI detection with plagiarism, fact, readability, and writing checks across web, extension, and API options. Treat detection results as estimates rather than conclusive evidence, and account for the monthly expiry of Pro credits.

Questions

Is there a free plan?

Yes. Basic costs nothing and requires no subscription. It includes three AI detection scans per day, up to 2,000 words per scan.

What does Pro cost?

Pro is $12.95 a month billed yearly, or $14.95/month with monthly billing. The annual billing total is $155.4.

Which platforms does Originality.ai support?

The listed platforms are web, extension, and API.

Does it offer API access?

Yes. The REST-based API can submit text for AI and plagiarism scans and return detailed results. The maker says AI detection supports 30 languages.

Can detection results be treated as proof?

The terms describe AI detection outputs as probabilistic estimates that can produce false positives or false negatives, and say they should not be treated as conclusive proof.

Facts from Originality.ai's own pages

AI Allowance: The AI detector offers configurable AI allowances of 0%, 5%, 15%, 25%, or 40%. · originality.ai, 29 Sept 2026
AI detection: The service estimates whether text resembles writing generated by systems such as GPT, Claude and ChatGPT. · originality.ai, 15 Oct 2026
API: The public REST API accepts scan requests and returns AI-likelihood and plagiarism results; the help page says it supports 30 languages. · help.originality.ai, 15 Oct 2026
API documentation: The API documentation shows a v3 scan endpoint authenticated with an X-OAI-API-KEY header and options for AI, plagiarism, facts, readability, grammar, content quality and AI-allowance checks. · docs.originality.ai, 15 Oct 2026
API scan limit: AI detection scans through the API have a 50-word minimum, and the help page says accuracy decreases below 100 words. · help.originality.ai, 29 Sept 2026
Auto-typing detection: The extension reports whether typing behavior appears natural or produced by an automated typing tool. · help.originality.ai, 15 Oct 2026
Browser extension: The extension scans Google Docs, web pages, or selected text and includes writing replay, typing behavior insights, and shareable reports. · help.originality.ai, 29 Sept 2026
Bulk scanning: The company describes bulk scans accepting CSV or Excel files, multiple URLs or a sitemap and running six content checks. · linkedin.com, 15 Oct 2026
Chrome and Firefox extension: Browser extensions scan Google Docs, full web pages or selected text for AI and plagiarism signals. · originality.ai, 15 Oct 2026
Company founding and headquarters: LinkedIn lists the privately held company as founded in 2022 and headquartered in Collingwood, Ontario. · ca.linkedin.com, 15 Oct 2026
Company launch history: The company says Originality.ai launched in November 2022 to detect GPT-3 content before ChatGPT was released. · originality.ai, 15 Oct 2026
Company legal name: Crunchbase lists the legal name as Originality.AI Inc. · crunchbase.com, 15 Oct 2026
Company size: LinkedIn lists 11–50 employees. · ca.linkedin.com, 15 Oct 2026
Current service status: The public status page reported no status updates during the preceding seven days when checked. · status.originality.ai, 15 Oct 2026
Customers: The company describes its intended audience as website owners, content marketers, writers, and publishers. · originality.ai, 29 Sept 2026
Data training opt-out: Users can disable Enable Data Usage in Account & Settings to opt out of retention for model training and refinement. · help.originality.ai, 15 Oct 2026
Decision support: The terms describe AI detection outputs as probabilistic estimates that may produce false positives or false negatives and say they should not be treated as conclusive proof. · originality.ai, 29 Sept 2026
Documentation and support: The help center contains setup, troubleshooting, billing, scan-history, false-positive, multilingual and API articles, with chat, email and knowledge-base support listed by GetApp. · help.originality.ai, 15 Oct 2026
Fact checking: The fact-checking aid provides real-time checks intended to reduce factual errors and AI hallucinations. · originality.ai, 15 Oct 2026
Founded: 2022 · originality.ai, 23 Sept 2026
Grammar checker: A grammar and spelling checker is included as an AI-assisted writing-quality tool. · originality.ai, 15 Oct 2026
Headquarters: Collingwood, Ontario, Canada · originality.ai, 23 Sept 2026
Integrations: Originality.ai offers a Moodle integration for reviewing submitted work for AI-generated text and plagiarism within Moodle. · help.originality.ai, 29 Sept 2026
Licence: The terms restrict reverse engineering and describe Originality.AI components as proprietary services; third-party open-source components may have their own licences. · originality.ai, 15 Oct 2026