Agent Assist is priced according to the number of  chat messages  processed by the service  each month . A chat conversation is defined as a conversation that uses only text for sending and receiving information.

• Conversation : A conversation is defined as a resource that contains an exchange between a human agent and an end-user.
• Message : A message is defined by a single request to  AnalyzeContentRequest  with an entry in the text_input field.

For voice conversations, Agent Assist is priced based on the total  duration of voice sessions  in minutes processed by the service  each month .