Quick answer
Descript was blocked within VoiceCheck's recommended configuration. Its clones reached the 60 test threshold only on low landline audio, scoring 61 at best, below the 79 to 89 range genuine users reach and referred to a Help Desk in production. Because Descript requires the target to read a consent script, an external attacker without the target's voice scored close to zero.
Verdict
Blocked, with Help Desk check
Laptop (best 44) and cell phone (best 40) clones stayed below the pass line of 60. Low-quality landline (best 61) passes go to a Help Desk, not straight in.
AI voice cloning tools like Descript can copy a voice from seconds of audio, so a fair question follows: can a Descript 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 Descript. This page shows Descript's results in full.
Descript vs VoiceCheck: the scores
Descript'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.
44
Laptop microphone (high quality)
best deepfake score: 44 / 100
Blocked (below pass)
40
Cell phone (medium quality)
best deepfake score: 40 / 100
Blocked (below pass)
61
Landline 8kHz (low quality)
best deepfake score: 61 / 100
Help Desk referral in production
Descript deepfake score Pass threshold (60) Genuine user range (79 to 89)
What these results mean
Descript only reached the pass line on low landline audio, scoring 61 at best, below the genuine 79 to 89 range and Help-Desk-referred in production. On laptop and cell phone audio it did not pass.
Descript also has a built-in limit that works in your favor. It requires the person being cloned to read a specific consent script. An external attacker who has only a short recording of the target cannot produce that script in the target voice, so external attacks scored close to zero.
Summary by audio channel
| Audio channel | Descript best score | Genuine user range | Outcome |
|---|---|---|---|
| Laptop microphone | 44 | 79 to 89 | Blocked |
| Cell phone | 40 | 79 to 89 | Blocked |
| Landline (8kHz) | 61 | 79 to 89 | Help Desk referral |
About Descript
Descript is a desktop application used widely for audio and video editing. Uniquely among the tools tested, it requires the person being cloned to read a consent script, which trains the model and limits misuse.
Why VoiceVantage blocks Descript 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 Descript, VoiceVantage stayed secure within its recommended configuration.
Compare VoiceVantage with the other tools
Frequently asked questions
Can Descript voice clones bypass VoiceVantage?
In independent UOIT testing, Descript was blocked within VoiceCheck's recommended configuration. Its clones only reached the 60 test threshold on low landline audio, scoring 61 at best, below the genuine range and referred to a Help Desk.
Why did Descript fail external attacks?
Descript requires the target to read a consent script. An external attacker who has only a short recording of the target cannot produce that script in the target voice, so external attacks scored close to zero.
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.
How was this tested?
By the Institute for Cyber Security and Resilient Systems at Ontario Tech University (UOIT), using Descript 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.