Kazan SEO AI Detector
Professional-grade AI content detection and semantic SEO analysis at zero cost.
Enterprise-grade linguistic pattern analysis for detecting GPT-4, Claude, and Gemini outputs.
AI Detector by SpellCheck.info is a high-performance linguistic analysis utility designed for the 2026 content landscape. It operates by evaluating text through a dual-lens approach of perplexity and burstiness. Unlike simple keyword-matching tools, this detector identifies the mathematical signatures of Large Language Models (LLMs) including GPT-4o, Gemini 1.5 Pro, and Claude 3.5 Sonnet. As generative AI becomes more sophisticated, SpellCheck.info utilizes a refined statistical model that distinguishes between the predictable cadence of synthetic text and the irregular complexity of human writing. In the 2026 market, it occupies a critical niche as a low-latency, friction-free verification layer for digital publishers, academic institutions, and SEO agencies. The architecture is optimized for web-scale processing, offering a serverless execution model that returns results in milliseconds. Its positioning emphasizes accessibility, providing high-accuracy detection without the prohibitive seat-based costs associated with enterprise forensic suites, making it an essential tool for high-volume content moderation and quality assurance workflows.
Measures the randomness of text; lower perplexity correlates with higher AI probability.
Professional-grade AI content detection and semantic SEO analysis at zero cost.
Forensic-level AI content detection and advanced humanization for SEO-proof content.
Transform AI-generated text into undetectable, human-grade content with advanced linguistic humanization.
A non-profit open-source detector for educational integrity and transparent AI verification.
Verified feedback from the global deployment network.
Post queries, share implementation strategies, and help other users.
Analyzes variation in sentence structure and length across the document.
Engineered to detect outputs from diverse architectures (Transformer-based vs. SSMs).
Visually highlights specific sentences that appear most likely to be AI-generated.
Supports detection in over 12 languages including Spanish, French, and German.
Client-side processing logic for rapid results without server-side queuing.
Text is processed in volatile memory and not stored in persistent databases.
Educators need to identify AI-assisted essays without expensive licensing.
Registry Updated:2/7/2026
Ensuring freelance writers are not using raw AI output that could be de-indexed by Google.
Bloggers receiving massive amounts of AI-generated outreach spam.