Our AI Detector, available for free below, is the Most Accurate AI Detector for GPT-5, ChatGPT, Claude 4, Gemini 2.5, Grok 3 and all other Popular AI writing tools.
Prove Your Writing is Your Own…
With our free Chrome Extension you can watch a replay of how a document was created.
Trusted by Industry Leaders
A complete suite of QA/QC products
Originality.ai offers a complete suite of patented AI tools for writers, students, editors, marketers, web publishers, and educators including, AI detection, Plagiarism Checking, Fact Checking & Grammar Checking.
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Deep Scan ›
See why text is flagged as AI + how to ethically edit it, so your work is identified as original
(not AI)!
AI Checker ›
Most Accurate AI Detector for all AI writing tools. Try now for free.
Plagiarism Checker ›
See if text has been plagiarized from anywhere on the internet.
Content Optimizer ›
AI-powered content optimization that helps your content predictably rank better in Google.
Readability Checker ›
Optimize readability for your target audience to communicate clearly.
Bulk Scan ›
Scale content QA and scan an entire website’s content easily.
Grammar Checker ›
Say goodbye to typos. Catch grammar and spelling errors before you publish.
Fact Checker ›
Use our fact checking aid to help ensure your content is factually correct.
Step 1
Paste or Upload Text
Login to Originality.ai and paste your text into the editor. You may also upload a PDF to check if a document was written by AI or enter a URL for scanning.
Step 2
Select Scan Types
Select your desired scan types like AI, Plagiarism, Content Optimization, Readability, Grammar OR Fact Checker to scan your text against.
Step 3
Click Scan
Click on the Scan button and get scores for each scan type with detailed explanations and sentence highlights wherever applicable.
