AI Detector & Humanizer

Undetectable AI

Undetectable AI is a content analysis suite built around two core tools: an AI detector that scans text and flags specific AI-generated sentences, and an AI Humanizer that rewrites those flagged sections with more varied sentence structure and vocabulary. The site also ships an AI image detector, plagiarism checker, paraphraser, essay writer, and an SEO content writer, plus a Chrome extension for using the tools directly in the browser.

Detector.io

Detector.io is a multi-AI-detection dashboard that aggregates results from five different AI checkers (GPTZero, Winston AI, AIDetector.pro, ZeroGPT, and its own model) in one place. It allows users to submit text once and receive a side-by-side comparison of AI likelihood scores, sentence-level highlights, and a built-in humanizer to refine flagged content. It is designed for students, teachers, recruiters, marketers, and SEO teams to verify content authenticity and avoid false confidence from relying on a single detector.

PaperBleach

PaperBleach is an AI-powered text humanization tool that rewrites AI-generated content from models like ChatGPT, Claude, and Gemini to make it sound more natural and human-like. It includes a built-in AI detector to score the rewritten text against common detection systems like GPTZero, Turnitin, Copyleaks, and ZeroGPT.

AI Detect

AI Detect is a web-based platform that combines a powerful AI detector with an AI humanizer, allowing users to identify AI-generated text and rewrite it to appear more human. The service claims 99% accuracy on major AI models like ChatGPT, Google Gemini, Claude Opus, Meta LLaMa, and Mistral AI, making it a go-to tool for verifying content authenticity. Beyond detection, AI Detect provides readability and grade level scoring, helping users refine their content for clarity and target audiences. With a free tier and flexible weekly, monthly, or yearly plans, it is designed for students, writers, marketers, and businesses seeking to maintain content originality and trust in an age of generative AI.

AI Image Detector

AI Image Detector is a multi-signal forensic screening tool that checks whether an image is AI-generated. It runs uploaded images through four independent AI-detection models, applies a published weighted-vote rule, and presents graded conclusions with named evidence instead of a single made-up percentage.