Quick answer
Resemble AI was blocked within VoiceCheck's recommended configuration. Its clones crossed the 60 test threshold only on low landline audio, scoring 66 at best, below the 79 to 89 range genuine users reach and referred to a Help Desk in production. On laptop and cell phone audio it did not pass.
Verdict
Blocked, with Help Desk check
Laptop (best 49) and cell phone (best 46) clones stayed below the pass line of 60. Low-quality landline (best 66) passes go to a Help Desk, not straight in.
AI voice cloning tools like Resemble AI can copy a voice from seconds of audio, so a fair question follows: can a Resemble AI clone slip past VoiceVantage? To answer it with evidence, the Institute for Cyber Security and Resilient Systems at Ontario Tech University (UOIT) tested VoiceCheck against the five most popular deepfake tools, including Resemble AI. This page shows Resemble AI's results in full.
Resemble AI vs VoiceCheck: the scores
Resemble AI's highest deepfake score against VoiceCheck, by audio channel
Pass threshold set to 60 for single-factor testing. Genuine users typically score 79 to 89. Scores from independent UOIT testing.
What these results mean
Resemble AI reached the pass line only on low landline audio, with a best score of 66, below the genuine 79 to 89 range and Help-Desk-referred in production. On laptop and cell phone audio it did not pass.
Resemble AI also adds inaudible audio watermarking to the clones it produces. Where a system can read those watermarks, misuse becomes traceable, an extra signal on top of VoiceCheck's own detection.
Resemble AI deepfake score Pass threshold (60) Genuine user range (79 to 89)
49
Laptop microphone (high quality)
best deepfake score: 49 / 100
Blocked (below pass)
46
Cell phone (medium quality)
best deepfake score: 46 / 100
Blocked (below pass)
66
Landline 8kHz (low quality)
best deepfake score: 66 / 100
Help Desk referral in production
Summary by audio channel
| Audio channel | Resemble AI best score | Genuine user range | Outcome |
|---|---|---|---|
| Laptop microphone | 49 | 79 to 89 | Blocked |
| Cell phone | 46 | 79 to 89 | Blocked |
| Landline (8kHz) | 66 | 79 to 89 | Help Desk referral |
About Resemble AI
Resemble AI offers instant and higher-fidelity voice clones and adds inaudible audio watermarking to its output so that clones can be traced where the watermark is supported.
Why VoiceVantage blocks Resemble AI deepfakes
VoiceVantage validates a voice in as little as 1.4 milliseconds and is built on many years of signal-processing research. Its recommended configuration pairs the score threshold with a Help Desk referral for low scores, so the small residue of low landline passes seen in testing is caught before it reaches an account. Across all five leading deepfake tools, including Resemble AI, VoiceVantage stayed secure within its recommended configuration.
Compare VoiceVantage with the other tools
Frequently asked questions
Q1
Can Resemble AI voice clones bypass VoiceVantage?
In independent UOIT testing, Resemble AI was blocked within VoiceCheck's recommended configuration. Its clones only reached the 60 test threshold on low landline audio, scoring 66 at best, below the genuine range and referred to a Help Desk.
Q2
Does Resemble AI watermarking help?
Resemble AI adds inaudible watermarks to its clones, so misuse can be traced where a system reads them. That is an extra signal on top of VoiceCheck's own detection.
Q3
Is VoiceVantage safe against AI voice cloning?
Yes, within its recommended configuration. Across 533 independent attempts using all five leading deepfake tools, the pass rate was very low, and passing scores were confined to low landline quality and referred to a Help Desk.
Q4
How was this tested?
By the Institute for Cyber Security and Resilient Systems at Ontario Tech University (UOIT), using Resemble AI to generate deepfake voice clones and attempting to authenticate against VoiceCheck across laptop, cell phone, and landline channels.
See VoiceVantage block deepfakes for your organization
Independently tested against the five leading AI voice-cloning tools.
Source: VoiceVantage VoiceCheck Verification Capability Analysis using five top deepfake apps, Ontario Tech University (UOIT), 2025. Read the announcement: VoiceVantage blocks the top five deepfake voice products across 533 independent tests.