Upcoming changes to Programmable Voice billing for outbound calls

On 8 July 2021 we will change the billing behavior for completed outbound calls.

Programmable Voice calls are charged based on the status of the call and its duration. For some Programmable Voice outbound call flows Twilio has not been billing for completed calls that had a duration of less than one second. In these cases, calls have been connecting and completing with sub-second durations and our systems has not had the precision to bill for these sub-second increments.

Effective 8 July 2021 Twilio will be updating our systems to round the duration of any completed sub-second call up to 1 second and emit a billing event for those calls.