Low AI signal
Fewer recognized synthetic-speech patterns.
100% free · private browser analysis
Free AI Voice Detector
Upload or record a voice clip and get a clear 0–100 AI voice score. This free AI audio detector checks for patterns associated with AI-generated and cloned speech—without an account, credits, or audio upload.
✓ Free to use✓ Audio stays on your device✓ Results in seconds
VOICE SAMPLE
Upload or record a sample
Drop your audio here
MP3, WAV, M4A, AAC, OGG or WebM · up to 25 MB
or
✓
Your audio stays here.
Analysis runs in this browser. The recording is not uploaded to UltraHumanizer.
A score you can read at a glance
What your AI voice score means.
The score runs from 0 to 100. A higher number means the clip contains more patterns this AI-generated voice detector associates with synthetic speech. It is a similarity score—not a percentage guarantee.
0100
Mixed signal
The AI audio checker cannot form a clear direction.
Elevated AI signal
Several voice-generation patterns are present.
High AI signal
Strong similarity to audio the model learned as synthetic.
A careful second opinion
A useful signal—not a verdict.
The detector compares short sections of speech with patterns learned from real and synthetic audio. It then combines those readings into an honest confidence band.
Private by design
The model runs locally after it loads. Your audio is decoded and analyzed on your device, not stored on our servers.
More than one moment
Longer recordings are sampled across several sections, so one breath, pause, or noisy second does not decide the result.
Built-in uncertainty
Ambiguous audio is labeled uncertain instead of forcing a confident answer the evidence cannot support.
Before you decide
Listen to the context, too.
Voice detectors can be affected by background noise, compression, music, accents, microphones, and newer synthesis systems. Use the result alongside source history and human review.
- 01Use clear speech
Choose at least four seconds with one main speaker and limited background sound.
- 02Prefer the original file
Repeated downloads, screen recordings, and aggressive compression can remove useful detail.
- 03Never treat a score as proof
A detection score cannot establish authorship or intent on its own.
One check, several real contexts
Use the AI audio detector where origin matters.
Check a clean excerpt before sharing, publishing, moderating, or investigating it. The free voice clone detector works best when speech is the main sound.
Questionable messages
Check whether a suspicious voice note contains signals commonly associated with cloned speech or an AI-generated voice.
Clear single-speaker audio works bestInterviews and social video
Run a short spoken excerpt through the deepfake audio detector before relying on or redistributing the clip.
Use the earliest available source fileVoiceovers and podcasts
Compare narration samples with a consistent 0–100 AI voice score while keeping the final decision with a human reviewer.
Scores can vary across sectionsScreening at first pass
Use the AI speech detector to prioritize recordings that deserve closer provenance checks—not as an automated accusation.
Always review the surrounding evidenceQuestions, answered
Free AI voice detection,
without the fine print.
Is the AI voice detector really free?+
Yes. There is no account, subscription, credit pack, or API fee. The model runs in your browser.
Does my recording leave my device?+
No. The page downloads the detector model, then analyzes your recording locally. UltraHumanizer does not receive the audio.
Which audio formats work?+
Most modern browsers can decode MP3, WAV, M4A, AAC, OGG, and WebM. Browser support can vary by device.
How accurate is the result?+
No AI voice detector is 100% accurate. This free model is best used as an initial screening signal, especially on clear English speech.