The detectormethodology v3.2updated Apr 2026

Is this AI?

Drop any audio clip. Get a citable verdict in under half a second. We delete uploaded audio within 24 hours unless you save it.

Drop audio to analyze

Drag a file, paste a URL, or record straight from the page. Accepts MP3, WAV, M4A, WebM up to 25MB.

Drop file|paste URL|record 5s

Models covered24+

Accuracy99%

Median time0.48s

Retention24 hours

AccountNot required

CostFree to try

How to read the verdict

A probability, not a label.

Every verdict explains what we measured, what the confidence number means, and what to do if you suspect a false positive.

01 . Confidence

The percentage

How sure the model is that the audio was generated by a synthesis system. 97% means very likely synthetic. 50% means we cannot tell. We never round up.

02 . Attribution

The model name

When we recognize a specific generator (ElevenLabs v2, Resemble v3, PlayHT, OpenAI, and others), we name it. When we cannot, we say "unknown synthesis" and stop.

03 . What we keep

Nothing, by default

Uploaded audio is deleted within 24 hours. Verdicts you cite externally get a permanent URL with the audio fingerprint, never the audio itself.

FAQ . the detector

Questions we hear often.

Short answers. If yours is not here, the team replies to email same day.

How long does a clip need to be?

About half a second of clear speech. We accept files up to 25MB; anything longer than 5 minutes we sample down for speed.

What languages do you cover?

All major languages. Detection is acoustic, not linguistic, so accent and language affect us less than they affect transcription models.

How often are you wrong?

On clean audio (no compression, no background noise) we report 99% accuracy. On heavily compressed audio, expect lower confidence. We always show the number; we never claim certainty we do not have.

Can I use this for journalism or legal evidence?

Yes. Each verdict has a permanent URL and an APA-style citation. We publish the methodology so opposing counsel or an opposing editor can verify the test.

Do you have an API?

Yes, included with the Starter plan and above. See pricing. Enterprise customers can request a custom retention policy and dedicated retraining.

What happens to my audio?

Deleted within 24 hours. If you save a verdict to your dossier, we keep an audio fingerprint (a one-way hash), not the audio file itself.

We keep as little as possible. The clip you upload is deleted within 24 hours. Saved verdicts retain a one-way audio fingerprint, never the audio file itself.

If you ever need us to delete your account and everything tied to it, email support@aivoicedetector.com and it is done within a day. We have never sold a single record. We have never had a breach.