Free AI Content Detector

This tool analyzes your text for linguistic patterns commonly associated with AI-generated content. It looks at burstiness (sentence length variation), use of common AI phrases like 'it is important to note' or 'in conclusion', transition word frequency, passive voice usage, and vocabulary formality. Human writing tends to have higher variation and natural imperfections; AI writing is more uniform and structured.

No AI detector is 100% accurate — including expensive paid tools. Detection is based on statistical patterns, which means false positives (flagging human text as AI) and false negatives (missing AI text) both happen. Results are most reliable with 150+ words. Use this as one signal to inform your judgment, not a definitive verdict.

Yes. If AI content is significantly edited, paraphrased, or humanized, detectors will score it lower. This is why detection is inherently an arms race — as AI models improve and as editing becomes more common, pattern-based detection becomes less reliable. The best approach for publishers is to require original thinking and personal perspective, not just to run a detector.

Google's official position is that AI-generated content is not automatically penalized — what matters is whether the content is helpful, accurate, and high-quality. However, mass-produced, low-quality AI content that doesn't serve users can be penalized under Google's spam and helpful content systems. AI-assisted content that adds real value is generally fine.

Common AI writing patterns include: uniform sentence lengths (low burstiness), heavy use of transition phrases (furthermore, moreover, in conclusion), formal vocabulary, passive voice, generic introductions and conclusions, repetitive structure, and specific phrases like 'it is important to note', 'plays a crucial role', 'delve into', and 'in today's world'.