Originality.ai is an AI content detector and plagiarism checker that helps writers, marketers, teachers, and publishers verify whether text is human-written, AI-generated, or mixed.
About
Originality.ai is a content-integrity platform built around an AI detector that identifies whether a piece of text was written by a human, generated by an AI model, or combines both. As AI writing tools have become widespread, publishers, educators, and agencies need a reliable way to verify authorship, and Originality.ai addresses this by combining AI detection with plagiarism checking, readability scoring, grammar checking, and fact verification in a single workflow.
The product works in three steps: a user pastes text, uploads a file, or submits a URL; the platform scans it for AI content, plagiarism, and content quality; and the user reviews scores for each check. Beyond the web app, Originality.ai offers Chrome and Firefox browser extensions, a Google Docs integration, a Moodle plugin, an API, and MCP support. The company states that its detector has performed well in third-party studies and is trained on adversarial data so that AI text altered by paraphrasing tools remains detectable.
Key Features
Pricing & Fees
- Pricing: A Free plan offers 10,000 words (100 credits, one time) with no subscription. The Pro plan costs $14.95/month (or $12.95/month billed annually at $155.40/year) and includes 200,000 words per month. The Enterprise plan costs $179/month (or $136.58/month billed annually at $1,638.96/year) with 1.5 million words per month and API access.
- Free tier: Yes — a no-cost plan with limited one-time credits covers AI detection, plagiarism, content quality, grammar, readability, and fact checking.
- Credit system: One credit equals 100 words; extra credits can be purchased, and additional team seats are available on Pro ($8.62–$9.95/month) and Enterprise ($19.04–$24.95/month) plans.
- Model coverage: The detector is stated to work on major models including the GPT-6 family, Claude, Gemini, Kimi, DeepSeek, Grok, and Llama.
- Security: The platform uses TLS 1.2 or higher with 256-bit encryption, and users can opt out of AI training data use and delete scan history.
Who It's For
Originality.ai is aimed at several distinct groups. Writers, editors, and marketers use it to verify that published content is original, readable, and free of both plagiarism and detectable AI text. Teachers and students use the Moodle plugin, Google Classroom integration, and Writing Replay feature to support academic integrity and demonstrate authorship. Agencies, high-volume web publishers, and schools use the team management, bulk scanning, and API features to run content quality checks at scale.
FAQ
What is Originality.ai?Originality.ai is an AI detection and plagiarism checking platform that labels text as AI-generated, human-written, or mixed, and adds related checks for readability, grammar, and factual accuracy.
Does Originality.ai have a free plan?Yes. The Free plan requires no subscription and provides a one-time allowance of 10,000 words (100 credits) with access to all core checking features.
What platforms and integrations does Originality.ai support?It works through a web app, Chrome and Firefox browser extensions, Google Docs, a Moodle plugin, an API, and MCP, making it usable across common writing environments.
Can Originality.ai detect AI text that has been paraphrased?The company states that its detector is trained on adversarial data and is continuously tested against text-altering tools such as paraphrasers to keep modified AI text detectable.
How does Originality.ai handle data privacy?The platform encrypts data with TLS 1.2 or higher and 256-bit encryption, and users can opt out of having their content used as AI training data and delete their scan history with one click.
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