Pricing for speech recognition
Speech recognition is charged based on the duration of speech analyzed in a Gather execution.
Charges are computed based on 15-second pulses, so if speech was recognized for 35 seconds, the account would be billed for 45 seconds (15 * 3) of speech.
Gather speech recognition charges are USD 0.02 per 15 seconds of execution.
Note that Vobiz charges only for speech input detection and not DTMF input detection. If you're using Gather with inputType set to dtmf, you won't be charged.