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AssemblyAI

AssemblyAI · Audio and voice · US · www.assemblyai.com

Last verified 2026-09-16

Entry services/assemblyai.yaml

Training on your data (default tier)

Customer data licensed to AssemblyAI to improve and train its models, with an opt-out that depends on the pricing plan; de-identified data usable for training without limit

Retention

As long as necessary to provide the Services or for business purposes; no fixed period for audio or transcripts

Data residency

Not stated in the terms of service; EU endpoint availability pending review

Vendor data-handling terms

Training on your data (default tier)

Customer data licensed to AssemblyAI to improve and train its models, with an opt-out that depends on the pricing plan; de-identified data usable for training without limit

The terms grant a licence to use Customer Data to develop and improve the Services and to create de-identified data that may be used for training and other purposes.

“For information on how to opt-out of AssemblyAI’s use of Customer Data for purposes of training its artificial intelligence and machine learning models (to the extent applicable to Customer’s pricing plan), please visit: https://www.assemblyai.com/docs/faq/how-to-opt-out-of-data-sharing-for-our-model-improvement-program .”

checked 2026-09-16

AssemblyAI Terms of Service

Retention

As long as necessary to provide the Services or for business purposes; no fixed period for audio or transcripts

“We retain Personal Data about you for as long as necessary to provide you with our Services or to perform our business or commercial purposes for collecting your Personal Data.”

checked 2026-09-16

AssemblyAI Privacy Policy, Retention

Data residency

Not stated in the terms of service; EU endpoint availability pending review

AssemblyAI documents an EU-hosted API endpoint separately; that documentation has not yet been verified here.

not stated by vendor

Domains and endpoints

observed means seen in Unseen deployments; vendor-documented means listed by the vendor. Vendors do not publish complete lists.

Host	Role	Source
api.assemblyai.com	api	observed

Assessment

API, default plan settings: highAPI with training opt-out and EU endpoint: unrated

Reasoning: A speech-to-text API whose input is recorded conversations, which are as sensitive as content gets. The default terms licence that content for model improvement with plan-dependent opt-out, and de-identified derivatives are usable for training with no opt-out. Whether the EU endpoint and opt-out are in use is a configuration question on the customer's side; without confirmation the default rating stands.

Flags: Training licence on customer audio and transcripts by default · Recorded conversations (third-party personal data) · Assessed 2026-09-16. The assessment is Unseen's; the terms above are the vendor's.

Changelog

2026-09-16Documented. Training licence and opt-out verified against the terms of service, retention against the privacy policy; EU endpoint documentation pending.
2026-09-15Listed from the Unseen catalogue with observed domains.

Corrections

Pull request on GitHub, or the form below. Changes are reviewed and recorded in the changelog.