Detecting-AI.com vs It's AI

Detecting-AI.com analyzes writing for signals associated with AI-generated text and presents a document score with highlighted passages. The web detector accepts pasted text plus TXT, PDF, and DOCX files; scanned PDFs requiring OCR are not supported. It is designed for text linked to GPT, Claude, and Gemini, including edited or AI-assisted drafts. The service preserves document structure, scores eligible sentences separately, and combines those scores into a document signal. The maker reports 99% detection accuracy and a false-positive rate under 1% on its described datasets, while noting that short, translated, heavily edited, or formulaic writing can be harder to classify and that a score cannot establish authorship or misconduct. Paid plans add unlimited AI detection, an AI Humanizer, Fact Checker, and plagiarism credits. REST APIs cover detection, humanization, and plagiarism checks, with a remote MCP server for compatible assistants. The free plan requires no account and allows 15,000 characters per check. Paid pricing starts at $7 a month billed annually.

It's AI estimates whether text may have been written by a language model, including content associated with ChatGPT, Gemini, Claude, Grok, and other models. It also offers plagiarism, grammar, and spelling checks. Users can paste text or upload PDF, DOCX, and TXT files; the displayed limits are 200 to 500,000 characters. Deep Scan highlights sentences that appear AI-generated and provides a word heatmap showing which parts influence the score. Listed integrations include an API, Chrome Extension, ChatGPT Plugin, Python SDK, Canvas LMS, and Zapier; Moodle is marked as coming soon. The service is presented for teachers, students, institutions, and publishers, as well as writers, managers, recruiters, and ML engineers. It also offers enterprise API access and batch processing. The FAQ advises treating results as evidence alongside context, not as sole proof of AI use, and says content is not shared with third parties after checks are complete. The free plan is listed at free. Plus is listed at $84 a year, billed at $84/year and shown as $7 and $9/month with annual savings.