### Answer
Based on the available sources, here's what I can confirm about Retell AI's HIPAA compliance and BAA:
BAA Availability and Cost
You can sign a BAA at no additional cost through
[(1) ](
) [(2) ](
) . HIPAA compliance is available without requiring an Enterprise plan .
PHI Handling
Retell AI provides end-to-end encryption for all calls and data [(2) ](
) . For PHI protection, you can opt out of data storage after the call ends so it won't be stored on Retell's systems [(1) ](
) [(2) ](
) . If you prefer not to store data on Retell AI's servers, you can opt out of sensitive data storage, which allows you to control how call recordings and sensitive information are handled [(3) ](
) [(4) ](
) .
When you enable the opt-out option, call recordings won't be stored on Retell's systems, and you'll need to store them in your own database if you want to maintain access to call logs . The webhook payload structure remains the same, though some data might not be included if opt-out is enabled .
Additional Information
For more detailed information about compliance controls, you can visit the trust center at
[(1) ](
) [(2) ](h