AI Detectors.io vs It's AI

AI Detectors.io analyzes text associated with major language models, returning an overall AI probability, confidence scores, and sentence-level results. The site also offers a humanizer, citation verification, plagiarism checking, grammar tools, and watermark removal. Its detector says it examines perplexity, burstiness, n-gram patterns, and stylometric fingerprints. The company reports 95.2% accuracy and 3.1% false positives from an April 2026 benchmark of 500 texts. The detector is trained and benchmarked on English; it returns scores for other languages, but those languages are outside that benchmark. Access is available through the web, Chrome extension, Microsoft Word add-in, and REST API. The Word add-in supports Word 2016 and later on Windows and Mac, as well as Word for the web, and can produce PDF reports. The free plan includes 10,000 words per month and a 500-word-per-use limit. Premium is listed at $8.33 a month, billed annually, with scans up to 25,000 words. Submitted text may be processed by third-party providers and retained as long as needed to support the service.

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.