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 (Enterprise plan)

Pricing: Freemium. Free ($0, 100 one-time credits, about 10,000 words), Pro ($14.95/month or $12.95/month billed annually, 2,000 credits/month), and Enterprise ($179/month or $136.58/month billed annually, 15,000 credits/month, API access, 1-year scan history). One credit covers 100 words, and extra credits can be bought on any plan.

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.