GPTZero is the first and leading AI detector that allows you to identify specific content in a document or text that has been generated by a large language model (LLM), such as ChatGPT.

Nov 28, 2025 · Quillbot's Free AI Detector - Use our AI checker to analyze text and identify content generated from ChatGPT, GPT-5, Gemini, Claude, and other AI platforms.

Our API is available for the AI Detector, Plagiarism Checker, Paraphraser, Summarizer, Grammar and Spell Checker, Chatbot & Translator

Our AI Detector is carefully trained to detect most texts generated by popular tools like ChatGPT and Bard. These texts often contain certain phrases, patterns, or awkward wording that indicate they …

Free AI Detector & AI Checker Our AI detector and AI checker are 99.8% accurate and 100% free to use. Check any text for AI-generated content from ChatGPT, Claude, Gemini, and more.

Grammarly’s AI Detector is ranked the #1 AI checker. Get instant AI detection for content generated by ChatGPT, Gemini, and more.

Originality AI Detector Identify AI-written text AI Image Detector Identify AI-generated images

Instantly detect AI-generated text from ChatGPT, GPT-4, Claude, Gemini, and other popular models.

Our AI detector cross-checks your text with multiple leading AI detection tools (Turnitin, Copyleaks, GPTZero, ZeroGPT, and others). This gives you confidence that your text passes other checkers.

Run an AI detector text scan across several providers, compare the AI scores, and see where they agree or clash. You can spot risky sections and avoid editing the whole page because of one …