AI Detector by SEOTools4

AI Detector by SEOTools4 is a sophisticated linguistic analysis engine designed to evaluate the likelihood of text being generated by Large Language Models (LLMs). Utilizing a hybrid architecture that combines Transformers-based classifiers with entropy and perplexity analysis, the tool identifies the semantic patterns characteristic of GPT-4, Claude 3.5, Gemini 1.5, and specialized fine-tuned models. In the 2026 landscape, as AI-generated content becomes indistinguishable from human prose at a surface level, SEOTools4 positions itself as a critical layer for webmasters and SEO professionals to avoid search engine de-indexing. The system calculates 'burstiness' (variation in sentence structure) and 'perplexity' (unpredictability of word choice) to provide a granular percentage score. It supports multiple languages and provides a heat-mapped report highlighting specific sentences that exhibit high robotic probability. The platform is optimized for speed, processing thousands of words per second, and offers a robust API for programmatic content filtering within CMS pipelines. Its market position is focused on accessibility, providing high-fidelity detection results without the enterprise-level overhead of competitors like Originality.ai.