Originality.ai

What it does

Originality.ai takes in text pasted into its web app, uploaded as DOCX, DOC or PDF files, or pulled from a URL, including full-site scans. It returns an AI detection score that splits writing into Likely AI, Likely Original and Mixed, with sentence-level highlights. Scans can also cover plagiarism, readability, grammar, content quality and fact or hallucination checks, and results can be shared as read-only reports or downloaded as PDFs.

People typically use it to review freelance or outsourced writing, check blog content before publishing, or review student work. Distinguishing features include a browser extension for Google Docs and Chrome that offers a character-by-character writing replay and auto-typing detection, and Deep Scan tips for editing flagged text. The company says it tests paraphrasing tools and trains its detector on adversarial data.

It suits writers, editors, marketers, teachers and enterprise or school teams. Free scans are limited to 100 credits per account, and paid plans use monthly credits. The site notes that an AI score should not be used alone for academic discipline, text under 100 words is less accurate, and false positives can occur.

What it can do

• Detect AI-written and AI-paraphrased text with whole-document scoring and sentence-level highlights
• Run plagiarism checks alongside AI detection
• Scan text pasted, uploaded as DOCX, DOC or PDF, or pulled from a URL, including full-site scans
• Check Google Docs and web pages in the Chrome and Firefox extensions, including writing replay and auto-typing detection
• Generate shareable read-only and downloadable PDF reports with scan history
• Check readability, grammar, content quality and factual or hallucination issues through additional tools

Works with

• Chrome extension
• Firefox extension
• Google Docs
• Google Classroom
• Moodle
• ChatGPT connection
• Claude connection

Before you choose

• The page says an AI score should not be used alone for academic integrity decisions and should be one signal among others.
• Text under 100 words is less accurate, and paraphrasing or AI-assisted editing tools can cause false positives.
• Text entered into the free detector may be used for training; account holders can opt out.

Listed under

• Productivity
• Writing and docs
• AI detection
• Content quality
• Content writers
• Fact checking
• Grammar checker
• Plagiarism checker

Get started

Run a free scan without an account (limited to 100 credits) or sign up for full access.

1. Create an account at the sign-up page or run a free scan without signing in.
2. Paste text, upload a DOCX, DOC or PDF file, or enter a URL, then choose the scans to run.
3. Review the AI score and sentence highlights, apply Deep Scan tips to edit flagged text, and scan again.

Free allowance is limited to 100 credits per account and is not described as a trial. Pro and Enterprise are monthly subscriptions with annual billing discounts; additional credits can be purchased. Team seats are billed separately. Prices are in USD.

Source: originality.ai/pricing, checked 29 Oct 2026. Prices can change; check before you buy.

Sources for this overview

Product pages, documentation, and pricing checked 29 Oct 2026. Each source supports part of the overview; availability and prices can change.

• AI Detector - Accurate AI Checker for ChatGPT, GPT-5 & Gemini ↗originality.ai
• Pricing ↗originality.ai
• AI Detector Browser Extension for Chrome & Firefox | Originality.ai ↗originality.ai

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originality.ai: product, pricing and policy pages

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Last checked 29 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.