GPTZero

GPTZero is an AI content detection platform designed to distinguish between human-written and AI-generated text with a high degree of reliability. It analyzes text using multiple signals, including perplexity, burstiness, and writing patterns, to assess the likelihood that content was produced by large language models. The tool supports a wide range of formats, allowing users to paste text directly, upload documents, or integrate detection capabilities via API into existing workflows and platforms.

Key features include sentence-level and document-level detection, enabling users to pinpoint specific sections that may have been generated by AI. GPTZero also provides probability scores and detailed reports that explain its assessments, helping users make informed decisions rather than relying on a simple binary output. The platform is particularly useful for educators checking student work, publishers and editors verifying originality, and organizations enforcing content authenticity policies.