Smarter is a hosted service.  You only pay for what you use. Your cost for the service is based on the amount of text that is sent between our servers and your users.  You can use your account information on our server to monitor your costs.  There is currently no annual contract to use Smarter.

If you use our open-source version running on your own servers, our software tracks only your volume of chat queries, so you still pay based on your usage volume.