Liars.AI
FreemiumThe first AI-powered lie detector
AI DetectionFreemium
#youtube
Inputs: video
About Liars.AI
Liars.AI is an AI-powered lie detection tool that analyzes videos of people talking to determine if they are being honest. It analyzes body language, facial expressions, and tone of voice to provide a detailed analysis report.
How to Use
Upload a video of a person speaking to the camera. Liars.AI will analyze the video and provide a detailed report on the likelihood of deception based on facial expressions, body language, and tone of voice.
Key Features
- AI-powered lie detection
- Analysis of facial expressions
- Analysis of body language
- Analysis of tone of voice
- Detailed report generation
Use Cases
- Analyze videos to uncover potential untruths.
- Help understand the truth behind words, rather than as a definitive answer.
- Analyze videos of politicians, celebrities or other public figures.
Key Features
AI-powered lie detection
Analysis of facial expressions
Analysis of body language
Analysis of tone of voice
Detailed report generation
Pros & Cons
Pros
- Very easy to use: just shoot or upload a video
- Instant results (10–30 seconds for short clips)
- Provides analysis of multiple deception cues (facial, vocal, body language)
- Shareable result links make it easy to discuss with others
- Free to start (freemium model, no upfront cost)
- Affiliate program available with 20% commission
- Constantly improving via user feedback and RLHF
Cons
- Not a definitive lie detector; results are informative and thought-provoking, not legally or scientifically reliable
- Requires clear video with person speaking directly to camera, visible waist-up, neutral background, and at least 10 seconds length
- Pricing details are hidden behind sign-up; no transparent pricing page
- iOS app not yet available (web-only for now)
- Accuracy depends on video quality and language; may not work well with poor audio or non-supported languages
- Analysis is based on general theories of lie detection, which are not universally accepted
Best For
Analyze videos to uncover potential untruths.Help understand the truth behind words, rather than as a definitive answer.Analyze videos of politicians, celebrities or other public figures.
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FAQ
What do I get exactly?
When you use Liars.AI, you upload a video of a person speaking, and our system analyzes it to determine if the person is lying. You will receive a detailed report that includes analysis of facial expressions, body language, and tone of voice, helping you understand the truth behind the words.
How does Liars.AI work?
Liars.AI lets you upload videos to explore potential untruths. Our AI draws on widely discussed concepts and theories about lie detection, analyzing facial expressions, body language, and vocal tones. The insights are inspired by general understandings in the field and should be seen as informative and thought-provoking rather than definitive.
What AI model do you use?
Liars.AI uses a proprietary AI analysis pipeline specifically trained to understand and interpret facial expressions, body language, and tone of voice to detect deception. We continuously improve it with better datasets and reinforcement learning from human feedback (RLHF) from users.
What type of videos should I upload for best results?
The best videos have clear audio and video quality, with the person speaking directly to the camera, visible from the waist up, with a neutral background. The video should be at least 10 seconds long and the person should be speaking in a language our AI can understand.
Can I share the analysis results with others?
Yes. On the analysis result page, you can click the share button to get a link to share with others. You can also download the videos and send them to others in any way you like.
Do you have an iOS app?
We are currently developing an iOS app and plan to make it available on the App Store soon. Meanwhile, you can use our web version on any device, including iPhones and iPads, through your web browser.
How much does Liars.AI cost?
You can check our current pricing by signing up to view the pricing table. You can cancel your subscription at any time. The service appears to offer a free tier (freemium).