Discover Liarliar.ai (now PolygrAI), an AI lie detection tool that analyzes video feeds for heart rate, micro-expressions, and body language cues.

LiarLiar.ai is an AI-powered tool that functions like a lie detector and heart rate monitor by analyzing live video feeds. It looks for micro-expressions, heart rate changes, and shifts in body language to assess whether someone is being truthful. Its features include AI lie detection, heart rate monitoring via Remote Photoplethysmography (rPPG), and analysis of facial expressions, emotions, voice consistency, and language use — all combined into a single truth assessment.
The tool runs on Windows and Mac desktops and works with popular video calling software including Zoom, Google Meet, Teams, and Skype. It is still in development, with the team aiming for a stable, user-friendly experience focused on accurate analysis and privacy.
Liarliar.ai was founded by a team aiming to build trust through AI lie detection. The product has since been renamed PolygrAI, with improved performance and additional features. It analyzes micromovements, heart rate changes, body language, emotions, voice consistency, word choice, and attentiveness to spot deception.
The tool’s stated goal is to promote honesty, transparency, and trust by providing objective, data-driven insight into human communication.
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