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The plugin is free.

However, the calls to Tisane API may not be. The SaaS plans are listed here. In order to calculate your projected volume of messages per month, simply multiply your number of active users by 100 as a rough estimate.

If you surpass your monthly quota, you’ll get a notification in your Tisane Slack Bot section as shown below.

If your monthly volume of messages is very high, or you need to keep the processing secure, contact us to get a quote on an on-prem installation of Tisane.