If you subscribe to Sonix on a monthly basis (month-to-month), you can cancel anytime. There is no annual commitment.
If you want to pause your account and then re-subscribe at a later date, you can do that as well. For more information on how to pause your account go here: http://help.sonix.ai/changes-to-your-account/how-do-i-cancel-or-pause-my-subscription