Originality.ai
AI DetectionAI detection and plagiarism checker for content quality control
Overview
Originality.ai emerged in 2022 as one of the first dedicated AI content detection tools, founded by Jonathan Gillham in Toronto. The platform combines AI detection with traditional plagiarism checking, targeting content creators, editors, and SEO professionals who need to verify content authenticity. Unlike general-purpose plagiarism checkers like Copyscape, Originality.ai specifically focuses on identifying text generated by AI models including GPT-3.5, GPT-4, Claude, and Gemini.
The tool uses proprietary machine learning algorithms trained on billions of text samples to distinguish between human and AI-generated content. It provides percentage confidence scores at both document and sentence levels, helping users understand exactly which portions of content may be AI-generated. The platform has positioned itself as a quality control solution for publishers, agencies, and content teams concerned about content authenticity and potential search engine penalties.
Originality.ai competes directly with GPTZero and Copyleaks in the AI detection space, while also overlapping with traditional plagiarism checkers. The company has built integrations with popular content management systems and offers API access for bulk analysis, making it practical for high-volume content operations.
Key features
AI Content Detection
Identifies text generated by GPT-3.5, GPT-4, Claude, Gemini, and other major AI models with claimed 99%+ accuracy. Uses proprietary algorithms trained on billions of text samples.
Plagiarism Checking
Compares content against a database of 60+ billion web pages to detect copied text. Provides percentage matches and highlights duplicated sections.
Readability Analysis
Evaluates content complexity using Flesch-Kincaid and other readability metrics. Helps ensure content matches target audience comprehension levels.
Fact Checking
Cross-references claims in content against reliable sources to identify potential misinformation. Currently in beta with limited accuracy.
Team Collaboration
Allows multiple users to share credits and results within organizations. Includes role-based permissions and usage tracking.
Chrome Extension
Enables real-time AI detection on any webpage or within content management systems. Useful for quickly scanning published content.
API Access
Programmatic integration for bulk content analysis or workflow automation. Supports REST API with JSON responses.
Detailed Reporting
Provides sentence-by-sentence AI probability scores and confidence levels. Export results as PDF or CSV for record keeping.
Pricing
| Plan | Price | Includes |
|---|---|---|
| Base | $15/mo | 2,000 credits, AI detection, plagiarism checking, team sharing |
| Standard | $30/mo | 6,000 credits, readability analysis, Chrome extension, API access |
| Premium | $95/mo | 30,000 credits, fact checking, priority support, advanced reporting |
| Enterprise | Custom | Unlimited usage, custom integrations, dedicated support, white-label options |
FAQ
How accurate is Originality.ai at detecting AI-generated content?
Originality.ai claims 99%+ accuracy in detecting content from major AI models like GPT-4, Claude, and Gemini. However, accuracy decreases with heavily edited AI content or newer models not in their training data.
Can Originality.ai detect content from all AI writing tools?
It detects content from most popular AI models including GPT variants, Claude, Gemini, and PaLM. However, it may struggle with newer models or heavily modified AI content that's been paraphrased or edited.
Does Originality.ai offer a free trial or free tier?
No, Originality.ai does not offer a free tier. They provide a paid trial with a small number of credits, but all plans require payment from the start.
How does the credit system work?
Each credit scans approximately 100 words of content. A 1,000-word article would use about 10 credits. Credits roll over month to month and can be shared among team members.
Can Originality.ai help with Google's AI content policies?
While Google doesn't explicitly penalize AI content, they emphasize helpful, original content. Originality.ai can help identify AI text so you can edit it to add value and originality before publishing.
How does Originality.ai compare?
View all comparisons →Review Sentiment
70 reviews across 2 sources
Bottom line
One of the better values in ai detection. Originality.ai delivers combines AI content detection for just $15/mo, earning a 4.3/5 rating. The downside: false positive rate is concerning.
People love
- +Combines AI content detection and plagiarism checking in a single scan
- +Team management features enable editorial workflows with AI content auditing
- +Pay-per-scan pricing at $15/mo for 2000 credits keeps costs manageable
Common complaints
- –False positive rate is concerning — flags some human-written content as AI-generated
- –Detection accuracy drops for AI content that has been manually edited or paraphrased
- –No writing or rewriting features — purely a detection and auditing tool
Last updated Feb 2026