The agent will use the version you assigned to it at the phone numbers tab, you can choose a - specific version like version 4 or 5 - tag like prod tag - the last published version or the last created https://docs.retellai.com/agent/version#environment-tags https://cdn.discordapp.com/attachments/1186462578310910112/1529182375609897040/image.png?ex=6a610191&is=6a5fb011&hm=e1b7c5ce8dab4b548a5efbd91eba2fee9d6311c161b99d824e09d0b0dce8b786&