Hiya Deepfake Voice Detector

The extension publishes one input figure, the one second of audio, and no maximum, quota, file list or sign-in. The listing's Details read version 1.2.2, "Updated November 24, 2024", size 150KiB, language "English (United States)" for the listing itself, and a rating of 2.8 out of 5 from 9 ratings (chromewebstore.google.com, read 10 November 2026). The same technology sold through the Hiya Audio Intelligence API carries published limits that the extension does not: media files "must not exceed 5 minutes" and 64 mebibytes, decodable by FFmpeg, and the phone authenticity model v9 needs a "Minimum Voice Duration" of 750 milliseconds, with the English and Spanish languages making up "a significant part of its training dataset" (developer.hiya.com, read 10 November 2026). The API field on this card is marked available on that documentation, with no public price: its endpoints answer 429 "Not enough credits", and the price of a credit is not published.

Nothing is sold with the extension. "Deepfake Voice Detector is a free browser extension" (product page) and "Free" (listing), so the plans table carries one row and no price.

Retention is stated in the policy the listing links, not for the extension itself. The App Data Protection and Privacy Policy (Effective date May 31, 2018, Last reviewed March 1, 2024) says: "We process personal data only for so long as is necessary for the purpose(s) for which it was originally collected, after which it will be deleted or archived except to the extent that it is necessary for us to continue to process it for the purpose of compliance with legal obligations" (hiya.com/legal/hiya-data-policy, read 10 November 2026). The listing discloses that the extension handles "Personally identifiable information" and "Website content", and that the data is "Not being sold to third parties, outside of the approved use cases". Neither policy names the extension or the audio it samples, and no period is given, so the retention rank field stays empty, the reading the index gave the ElevenLabs AI Speech Classifier.

The figure belongs to the platform, not the extension. The AI Voice Detection page states "Over 99% (accuracy) vs. the most complex In-the-wild datasets, setting the industry benchmark", "Verifications in fractions of a second" and "Language and channel independent, including the most challenging low-quality audio" (hiya.com/products/protect/ai-voice-detection, read 10 November 2026). No dataset, sample count or test date accompanies the 99%, and the extension's own listing prints no figure. The claim gap field on this card therefore stays empty: the number is stated for the technology the extension is "Powered by", and no indexed study tested either.

The caveat is the vendor's own and sits on the listing: "Please note that this extension utilizes probabilistic algorithms, which means that its predictions or outputs are based on statistical analysis and may not always be 100% accurate. While we strive to provide the best possible results, we cannot guarantee complete accuracy. Use the extension with this understanding, and always verify important information independently" (chromewebstore.google.com, read 10 November 2026). The product page's marketing promise, that the extension is "designed to provide a [...] browsing experience", does not add a measurement. No false positive rate is published.