Originality.AI

Most Accurate AI Detector

Originality.ai claims to be the most accurate AI detector in third-party studies, with support for the latest LLMs including GPT-5.6 (Sol, Luna, Terra), Claude Fable 5, Gemini 3, Kimi K3, DeepSeek V4 (Flash & Pro), and more. It also offers 3 free AI scans per day for up to 2,000 words.

Accurately identify AI-generated content across a wide range of models.

Plagiarism Detection

The tool includes a plagiarism checker that scans text for copied content, helping writers and students avoid accidental plagiarism. It can be used alongside AI detection to ensure originality.

Detect and fix plagiarism to maintain content originality.

Prove Authorship with Writing Replay

The Chrome extension includes a Writing Replay feature that records the writing process, allowing writers and students to demonstrate that their work is original. This is especially useful for academic papers and content marketing.

Show proof of authorship and reduce false positives.

Understand and Improve AI-Flagged Text

Deep Scan provides insights into why text is flagged as AI and offers suggestions on how to ethically edit it to sound more natural. This helps users refine their writing.

Edit AI-sounding text to improve quality and reduce AI flags.

Works with Chrome, Moodle, and Google Classroom

Originality.ai offers browser extensions and plugins for Chrome, Moodle, and Google Classroom, allowing seamless AI and plagiarism checks within popular platforms.

Check for AI use without leaving your workflow.

API, Team Management, and Security

For enterprises and schools, Originality.ai provides an API for developers, team management with role assignment, and industry-standard security including TLS 1.2+ encryption. Training data use is optional, and scan history can be deleted in one click.

Scale AI detection and plagiarism checks across large teams with robust security.

• Proven AI Detection AccuracyOriginality.ai is the Most Accurate AI Detector in third-party studies. It accurately detects content from leading LLMs including GPT-5.6 (Sol, Luna, Terra), Claude Fable 5, Gemini 3, Kimi K3, DeepSeek V4 (Flash & Pro), and more. The tool is trained on adversarial data to detect AI paraphrasing from tools like Quillbot or Grammarly.
• Flexible Pricing with Free ScansYou can check up to 2,000 words with 3 Free AI Scans Per Day. Paid plans start at $12.95/month (billed yearly) for 2,000 credits per month, with 1 credit equaling 100 words. Enterprise plans offer 15,000 credits per month at $136.58/month (billed yearly). You can cancel anytime.
• Comprehensive IntegrationsSeamlessly integrate AI checking into Chrome, Google Docs, Moodle, and more. The Chrome Extension allows you to run scans directly in Google Docs and watch a replay of the writing process to prove authorship. An API is also available for developers.
• Features for Writers, Teachers & EnterprisesOriginality.ai offers AI Allowance to adapt to hybrid-content workflows, Deep Scan to see why text is flagged as AI, sentence highlights, PDF reports, team management, and full site scans. It is built for writers, editors, marketers, teachers, students, and enterprise teams.

• Credits Expire MonthlySubscription credits are set to expire at the end of each month if they aren't used. You can top up and buy additional credits as needed, but be mindful of the monthly expiry.
• Pricing DetailsPrices are in USD. The Pro plan is $12.95/month billed yearly ($155.40/year) or $14.95/month billed monthly. Enterprise is $136.58/month billed yearly ($1,638.96/year) or $179/month billed monthly. Additional team seats cost $9.95/month (or $8.62/month on yearly billing).
• Accuracy on Latest LLMsWhile Originality.ai claims high accuracy, the specific accuracy metrics for the latest LLMs (GPT-5.6, Claude Fable 5, Gemini 3, etc.) are not fully detailed on the page. It is trained on adversarial data, but results may vary.
• Support and Training DataStandard support is included, with issues typically resolved in 24 hours or less. You can opt out of AI training data use and delete scan history in one click. Enterprise plans include a Dedicated Customer Success Manager and Priority Support.

For Writers, Editors & Marketers

Publish readable, quality content by scanning for AI, plagiarism, and facts. Show writing in Google Docs, review facts and plagiarism, and use Bulk Scan to scale checks across multiple pieces.

For Teachers & Students

Use the Moodle Plugin & Google Classroom integration to check student work. AI Allowance offers flexible AI detection, the Chrome Extension shows authorship via Writing Replay, and Deep Scan helps ethically edit text that sounds like AI.

For Enterprise & Schools

Manage teams and assign roles, scale AI, plagiarism, and fact checks, and support learning and AI transparency. Enterprise pricing plans include API access, priority support, and 365 days of scan history.

For Agencies & Publishers

The Enterprise plan is ideal for agencies and publishers, offering 15,000 credits per month, a dedicated Customer Success Manager, priority support, and API access to handle high-volume content verification.

Define the exact plagiarism Checker Ai tools workflow Originality.AI should support.

Compare it with closely related AI tools in the same category before committing.

Set review rules for accuracy, privacy, brand voice, compliance, and final approval.

Connect useful outputs to the wider stack instead of leaving them inside the AI tool.