Originality.ai

Originality.ai is a web-based AI detection and content quality platform for publishers, agencies, writers, educators, and students who need to verify whether text is human-written, AI-generated, or AI-edited.

Key capabilities include:

• AI content detection for major LLM outputs (including ChatGPT, GPT-4o, Gemini Pro, Claude 3.5, and Llama 3.1), with sentence-level highlighting and shareable reports
• Plagiarism checking to find potential matches and duplicated content on the web
• Content QA tools such as readability analysis, grammar and spelling checks, fact checking, and SEO content optimization
• Workflow and scale options including bulk and full site scans, a Chrome extension for Google Docs (with writing replay), a WordPress plugin, and API access (available on higher plans)

Pricing: Pay as you go ($30 one-time for 3,000 credits), Pro ($14.95/month or $12.95/month annually for 2,000 credits/month), Enterprise ($179/month or $136.58/month annually for 15,000 credits/month). Credits are used for processing (commonly 1 credit per 100 words), with plan-based expiration rules.

Notable for combining AI detection plus plagiarism and editorial QA in one toolkit, with purpose-tuned detection models (including an Academic model for education use cases) and integrations for teams that need repeatable content integrity checks.