Tool profile
Originality.ai: cost, fit and limits
Originality.ai is a credit-based content checker made by Originality AI Inc. that scans text for AI generation and plagiarism, adds readability and quality scores, and sells browser extensions, bulk scanning and API access to publishers, agencies and schools.
What to know first
Originality.ai prices scans in credits where one credit covers 100 words. Free gives a one-time 10K words, Pro costs $12.95 a month billed yearly for 200K words, and Enterprise gives 1.5M words with an API. The AI Checker and Plagiarism Checker draw on one credit pool. Extras include a Fact and AI Hallucination Checker, a Moodle plugin and an MCP server, which matter to teams that check text inside their own tools.
Originality.ai at a glance
| Maker | Originality AI Inc., Canada |
|---|---|
| Free plan | Yes |
| Entry price | $14.95 per month (Pro), or $12.95 billed yearly |
| API access | Yes |
| Category | Best AI Plagiarism Checkers in 2026, rank 3 of 13 |
| Website | originality.ai |
Who Originality.ai is best for
Content agencies
Bulk Scan handles several texts in one run, and extra Pro seats at $8.62 a month on yearly billing let writers and editors share the credit pool.
Publishers with a pipeline
Enterprise includes API access and 15K credits a month, so a content system can send drafts for scanning and read results programmatically.
Teachers using Moodle
A Moodle plugin is listed, and the privacy policy adds that school agreements are not used for general-purpose AI model training.
Editors working in Google Docs
Chrome and Google Docs extensions on Pro let an editor scan a draft without exporting it first, and each scan draws on the shared monthly credit allowance.
Originality.ai plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Free | $0 | A one-time 10K words (100 credits) with no subscription. More credits can be bought at 1 credit per 100 words, so testing is possible without a card. |
| Pro | $12.95 per month billed yearly ($14.95 monthly) | 200K words (2K credits) a month, 30-day scan history, Chrome and Google Docs extensions, and extra team seats at $8.62 a month on yearly billing. |
| Enterprise | $136.58 per month billed yearly ($179 monthly) | 1.5M words (15K credits) a month, 1-year scan history, API access, priority support and extra team seats at $19.04 a month on yearly billing. |
Checked October 2026.
What Originality.ai does
- AI Checker
- The AI Checker detects AI content in text and offers sentence-level precision on the Pro plan, so a reviewer can see which sentences triggered the score. It is sold with word credits on every paid plan.
- Plagiarism Checker
- Plagiarism scanning shares the credit pool with AI checks, so one monthly budget covers both tests and no separate plagiarism meter has to be tracked, though scanning a text twice spends credits twice.
- Bulk Scan
- Several texts can be scanned in one run, which suits agencies that review a batch of freelancer submissions before publishing and would otherwise paste each article into the checker one at a time.
- Quality and readability scores
- A Content Quality Score and a Readability Checker sit beside detection, aimed at editors who judge how well a text reads as well as where it came from, all in the same account.
- Fact and hallucination check
- A separate checker looks for facts and AI hallucinations in a text. That is a different job from plagiarism, and it suits editorial review of machine-assisted drafts before they are published.
- MCP and extensions
- An MCP server lets AI assistants run scans from inside their own interface, and browser extensions cover Chrome, Firefox and Google Docs so scans can start where the text already lives.
How Originality.ai handles your data
The privacy policy says that unless a customer opts out, scan history and scan results may be used to help train and improve models. It states that personal data is not used for training and that school agreements are not used for general-purpose AI model training. Scan history lasts 30 days on Pro and one year on Enterprise. The pages read name no hosting region, certification or retention period beyond those history limits, so the vendor's policy was not checked for them.
Where Originality.ai falls short in practice
- Short scan history. Pro keeps scan history for 30 days. A team that needs to show an earlier check to a client must export reports or move to Enterprise for one year.
- Opt-out for training. Model training on scan history and results is the default, and the customer has to opt out, which complicates use for confidential manuscripts, client drafts or unpublished research.
- Seats cost extra. Additional Pro seats add $8.62 a month each on yearly billing, so a team of five pays well above the headline $12.95 and shares one 200K-word pool.
Works with
Alternatives to Originality.ai
Originality.ai: common questions
How many words does one Originality.ai credit cover?
One credit covers 100 words according to the pricing page. Pro includes 2K credits, or 200K words, each month, and Enterprise includes 15K credits, or 1.5M words. The Free plan is a one-time 100 credits, so a 10,000-word test is the most you can scan without paying.
Does Originality.ai train on my scans?
The privacy policy says scan history and results may be used to train and improve models unless the customer opts out. Personal data is not used for training, and school agreements are excluded from general-purpose model training. Ask support how to submit the opt-out before you scan unpublished work.
Is plagiarism checking included with AI detection?
Yes. The plagiarism checker and the AI checker share one credit pool on paid plans, so both scans draw from the same monthly allowance. That is simpler to budget than separate meters, but a long document checked for both uses credits for each scan.
Can I use Originality.ai through an API?
API access is listed on Enterprise at $136.58 a month billed yearly, and Pro does not list it. If your content pipeline needs programmatic scans, plan for the higher tier or ask the vendor whether an API option exists for Pro.
Is there a Moodle plugin?
The product page lists a Moodle plugin and the privacy policy notes school agreements. The pages we read do not describe plugin pricing or setup steps. Check with the vendor which plan school accounts need and whether the plugin runs on your Moodle version.