Pindrop Pulse voice deepfake detector

The limits the vendor states are durations, not file sizes: two seconds of speech for a verdict on a live call, a score every four seconds through a file in Pulse Inspect, and continuous analysis through a meeting. Pulse Inspect is described as "an API-driven batch-processing platform and simple user interface" with "adjustable thresholds based on risk tolerance" (Pulse Inspect release, read 9 November 2026). No file size, duration cap or accepted format is published for any of the three products, and no public API documentation page was found on 9 November 2026; the API field records the batch API the release describes.

No price is published. Every product page ends in "Schedule a demo" or "Talk to a human", and the Pulse Meeting Terms describe three routes to a subscription, a Marketplace Provider, an Authorized Reseller or a Direct Order, with direct-order fees "invoiced and payable in U.S. Dollars, unless set forth otherwise in an Order" and due within 30 days (pindrop.com/legal/pulse-meeting-terms, read 9 November 2026). The same terms define a Free Trial Product made available "as reflected in the relevant Order", "solely for internal evaluation and testing purposes, where Meeting Participants shall be limited to Company's own internal personnel", so the free tier field records none published and a trial by order. The Contact Centers page adds a "$1M deepfake detection warranty" for "eligible 3-year subscriptions to the full Pindrop product suite", with "Terms and conditions apply".

Retention is stated in years. The Privacy Notice for Pindrop Solutions, last updated March 27, 2026, reads: "During the course of services provided to its customers, Pindrop's solutions will receive content and recordings from our customers to extract the content-agnostic data points from the speech of the audio. Referred to as 'voice features,' these data points are retained by Pindrop for a period of up to three (3) years and deleted thereafter", and "Customer voiceprints are not retained by Pindrop" (pindrop.com/legal/privacy-notice-for-pindrop-solutions, read 9 November 2026). The card's retention rank field takes the three years, 1,095 days, as the stated period for a record derived from submitted audio, the same reading the index gave SynthID's 24-hour signature. The Pulse for Meetings DPA adds that after a 30-day return period Pindrop "will securely destroy all Personal Data as soon as practicable, but no later than 90 days", and the terms let Pindrop retain usage and log "Support Data" for product optimisation in a right that "shall survive any termination or expiration" (pindrop.com/legal/pulse-meetings-dpa, read 9 November 2026).

The accuracy claims come with footnotes, and the footnotes differ. The audio deepfake detection page shows "99% Detection accuracy against known engines", footnoted "Pindrop Pulse accuracy computed on the ASVspoof5 dataset of 32 engines" (pindrop.com/use-cases/audio-deepfake-detection, read 9 November 2026). The Contact Centers page shows "99% (accuracy) against known engines" and "<1% false positive rate", footnoted "Pindrop Product Data, 2024", and its FAQ states that "When combined with Pindrop's multifactor authentication platform, Pulse has been shown to deliver up to 99.4% (accuracy) with less than 1% false positives" (pindrop.com/pulse-for-contact-centers, read 9 November 2026). The Meetings FAQ gives "a 99% detection rate for known deepfake engines and over 90% detection for new or unseen deepfake generation engines, while maintaining a false positive rate of less than 1%", on the 20 million sample proprietary dataset, and reports that "In a separate, independent test by NPR ... Pulse correctly identified 81 of 84 audio samples, which Pindrop calculated as 96.4% accuracy" (pindrop.com/pulse-for-meetings, read 9 November 2026).

Two outside names appear in the claims and neither is an index record. The Contact Centers page says Pulse was "Named the fastest detection tool with the highest accuracy", footnoted to "Podonos's independent study of 17 audio deepfake detection systems, June 2026", and the Meetings FAQ says the Podonos benchmark "ranked Pindrop as the fastest most accurate commercial detector evaluated in its benchmark"; the NPR test is reported in Pindrop's words with Pindrop's arithmetic. The card quotes both as vendor statements until the sources are read and indexed. The Resemble AI Detect benchmarks page prints a different Podonos figure for Pindrop, 95% pooled audio accuracy, under its own August 2026 reading of the same benchmark; the index adopts neither vendor's figure for the other.

The vendor's caveats are in its legal text and its own FAQ. The Pulse Meeting Terms state that "the nature of Pindrop's Product is to provide a probabilistic determination as to whether a Meeting Participant may be human or a machine or an authenticated participant"; the audio page says the result "can help inform routing, verification, agent handling, or fraud review rather than automatically determining the outcome of every call" and that "No single signal tells the whole story" (pindrop.com/legal/pulse-meeting-terms and the audio deepfake detection page, read 9 November 2026). A 99% on a named benchmark of 32 engines and a 99% on unnamed product data are two different measurements, and the card keeps each with its footnote.