About
Better arguments, for everyone.
LizardTest helps people examine the reasoning in statements, arguments, advertisements, speeches, and public commentary. It points out possible “Logic Lizards” — memorable characters for common reasoning problems — and explains them in clear, respectful language.
The goal isn't to win arguments or score points against anyone. It's to slow down, look at how a claim is supported, and ask better questions.
The LinguaBeasts connection
LizardTest is a public-service outreach companion to LinguaBeasts, where you can learn and practice these reasoning skills in depth. LizardTest shows you the patterns; LinguaBeasts helps you master them.
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When you run an analysis, your passage and context are sent to an AI model to generate the result. LizardTest does not save, log, or store your submissions, and there are no accounts. The AI provider processes the text only to return the analysis.