Free browser tool
AI Text Detector
Paste an article, essay, email, or post. We'll show the general writing patterns behind the score instead of hiding them behind a verdict — model-agnostic, not tied to any one AI provider.
Paste your content
Longer samples give the checker more patterns to compare.
0 words · minimum 80
Your text stays in this browser and is not uploaded.
What this can do
Surface stylistic patterns associated with polished or templated AI writing — sentence-length variation, formulaic phrase density, contraction use, repeated sentence openings, and paragraph regularity — with the signals behind the score shown, not hidden.
What this cannot do
Prove who wrote something, or identify which AI model (if any) produced it. These are general stylistic heuristics, not a cryptographic watermark check — human writing can trigger the same patterns, and lightly edited AI text can trigger none of them. For a check scoped to Anthropic's Claude models and its statistical watermark specifically, use the Claude Watermark Detector.