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Yes — the ElevenLabs AI Speech Classifier is a free voice detector at elevenlabs.io/ai-speech-classifier that estimates the probability an audio clip was generated with ElevenLabs AI voice technology. It analyzes the first minute of your upload, requires no login, and also lists similar voices from the ElevenLabs library (checked 4 Nov 2026).
Best for: anyone checking whether a suspicious voice clip was made with ElevenLabs, and creators verifying their own content.
Not for: legal-grade audio forensics — it is a probability tool, not a courtroom verdict.
Starting price: Free — no login or paid plan required to use the classifier.
What the ElevenLabs AI Speech Classifier does
The AI Speech Classifier is ElevenLabs’ own AI voice detector, published at elevenlabs.io/ai-speech-classifier. You upload an audio sample, and the tool returns the probability that the clip was generated with ElevenLabs AI voice technology. It is designed to help identify AI-generated audio — for example a voice message, clip or song you suspect was synthesized rather than recorded.
Two properties make it unusually accessible. First, no login is required — you can check a clip without creating an ElevenLabs account. Second, the classifier uses only the first minute of the sample, so even a long recording gets a fast answer based on its opening minute.
Alongside the probability score, the tool lists voices from the ElevenLabs library that sound similar to the sample. That makes it useful in both directions: detecting synthetic audio, and identifying which stock voice a clip resembles.
How to use the AI Speech Classifier
Follow these steps to check an audio clip:
- Open the classifier page. Go to elevenlabs.io/ai-speech-classifier in your browser. No account or login is needed. Cost: $0.
- Upload your audio sample. Choose the file from your device. The tool analyzes the first minute, so trim long files to the most relevant minute if you want a specific section tested. Cost: $0.
- Read the probability. The classifier returns the likelihood the audio was generated with ElevenLabs AI voice technology, plus similar voices from the library. Cost: $0.
- Interpret carefully. Treat the result as a probability, not proof — especially near the middle of the range. Combine it with context: who sent the clip, whether the voice matches known recordings, and whether the content is plausible. Cost: $0.
How accurate is the AI Speech Classifier?
ElevenLabs positions the classifier as a probability estimator, not a definitive detector. It is tuned to recognize audio generated with ElevenLabs’ own models, and the company notes an important limitation: the tool does not reliably classify audio generated with the Eleven v3 model. Results for v3-generated clips should be treated with extra caution.
The classifier is also specific to ElevenLabs. Audio made with other companies’ voice AI will not necessarily score the way you expect — a low ElevenLabs probability does not mean the clip is human, only that it likely was not made with ElevenLabs. For a fuller picture, pair the classifier with general media-literacy checks: reverse-search distinctive phrases, compare against verified recordings of the supposed speaker, and look for the usual synthetic tells like unnatural pacing or flat emotion.
Upload quality matters too. Heavy compression, background noise or very short clips give the model less to work with. When a result matters, test the cleanest, longest excerpt you have — the tool uses the first minute, so make that minute count.
Getting the most reliable result from the classifier
The classifier only analyzes the first minute, so make that minute representative of what you want tested. If you suspect a specific passage — a strange pronunciation, an odd pause, a voice that does not sound like the supposed speaker — trim the audio so that passage falls inside the opening minute. Uploading a full hour-long podcast when the suspicious bit sits at minute 40 wastes the analysis on the wrong section entirely.
Audio quality has a direct impact on reliability. The model was trained on relatively clean speech, so heavily compressed voice notes, phone calls with background noise, or clips with music underneath will score less reliably than a clean recording. When you have a choice, upload the highest-quality version of the clip available — a direct audio file beats a screen recording of a video playing on another device.
When the stakes are high, test more than one excerpt. Two or three one-minute samples taken from different parts of a longer recording give a fuller picture than a single test, because synthesis artifacts are not evenly distributed. Consistent high probabilities across several samples are far more meaningful than one borderline score from a single minute.
What happens to audio you upload?
ElevenLabs’ FAQ for the classifier addresses uploads directly: the company describes how submitted audio is handled on the tool’s page. Because you are sending someone’s voice to a third party for analysis, only upload clips you have the right to share — avoid uploading private conversations or other people’s voice messages without a legitimate reason.
If you encounter audio you believe is a harmful deepfake — fraud, impersonation or non-consensual content — the classifier page points users toward appropriate next steps rather than treating detection as the end of the process. Detection is the start; reporting and verification come next.
ElevenLabs pricing context
The classifier itself is free, but it detects audio made with ElevenLabs’ paid voice products, so the plan lineup is useful context:
| Plan | Price | Credits |
|---|---|---|
| Free | $0 | 10,000 credits/mo |
| Starter | $6/mo | 30,000 credits/mo |
| Creator | $22/mo | 121,000 credits/mo |
| Pro | $99/mo | 600,000 credits/mo |
ElevenLabs also shows a $1 first-month Starter offer, shown until Nov 8 when checked on 4 Nov 2026. Voice cloning — the technology behind most impersonation clips — is a paid feature, which is one reason the free classifier exists: to help the public check suspicious audio.
For voice generation itself, see the site’s guide to cloning a voice with ElevenLabs and the Voice Changer overview for how synthetic voices are made.
Pros
- Free to use with no login or account required.
- Fast — analyzes only the first minute of the sample.
- Lists similar ElevenLabs library voices, not just a score.
- Built by the company whose voices it detects.
Cons
- Does not reliably classify audio made with the Eleven v3 model.
- Only detects ElevenLabs-generated audio, not other companies’ voice AI.
- Returns a probability, not a definitive human-or-AI verdict.
- Only the first minute is analyzed, so later content in long files is ignored.
Who should NOT use the AI Speech Classifier
Do not use it as legal or forensic evidence. A probability score cannot prove who made a recording, and the v3 blind spot plus the ElevenLabs-only scope mean real synthetic audio can slip through. Courts, employers and journalists need proper forensic analysis, not a free web tool.
It is also the wrong tool for detecting non-ElevenLabs voice AI. If the suspicious clip was made with another provider, this classifier is not designed to catch it — a low score there means little on its own.
Frequently asked questions
Is the ElevenLabs AI Speech Classifier free?
Yes. The classifier at elevenlabs.io/ai-speech-classifier is free and requires no login or paid plan. Upload an audio sample and it returns the probability the clip was generated with ElevenLabs AI voice technology, based on the first minute.
Do I need an ElevenLabs account to use it?
No. The classifier requires no login and no paid plan — it is a public tool at elevenlabs.io/ai-speech-classifier. This is deliberate: ElevenLabs wants anyone who receives a suspicious voice clip to be able to check it, not just paying customers.
How long an audio clip can it check?
The tool uses only the first minute of the sample, so longer files are judged on their opening minute. If the suspicious section is later in a recording, trim the file so the relevant audio falls within the first minute before uploading.
Can it detect AI voices from other companies?
No — it is tuned for ElevenLabs-generated audio. A low probability means the clip was likely not made with ElevenLabs, not that it is human. Audio from other voice-AI providers needs different detection approaches.
Does it work on Eleven v3 audio?
Not reliably. ElevenLabs notes the classifier does not reliably classify audio generated with the Eleven v3 model, so v3 results should be treated with extra skepticism and cross-checked with other verification methods.
Can it identify which ElevenLabs voice was used?
It does not name the exact voice, but it lists similar voices from the ElevenLabs library alongside the probability score. If a clip was made with a public library voice, the similar-voices list often points in the right direction — useful for creators tracking misuse of their cloned voice.
What are the similar voices it shows?
Alongside the probability score, the classifier lists voices from the ElevenLabs library that sound similar to your sample. This helps identify which stock voice a synthetic clip may be based on, or find a voice like one you heard.
What should I do if I find a harmful deepfake?
Treat detection as the first step, not the last. Preserve the original file, document where you found it, report it through the appropriate channels (platform, employer, or law enforcement for fraud), and do not redistribute it. The classifier page points users toward next steps for concerning content.
Sources checked
- elevenlabs.io/ai-speech-classifier — tool description, first-minute analysis, no login, similar voices, v3 limitation (checked 4 Nov 2026)
- elevenlabs.io/pricing — Free/Starter/Creator/Pro plan lineup (checked 4 Nov 2026)
Last updated 4 Nov 2026. Prices checked on the official ElevenLabs pricing page on that date; confirm at checkout.