There’s an updated (April 2025) Power Platform Licensing Guide. Microsoft introduced deep reasoning and Agent Flows in Copilot Studio in March 2025 (https://bit.ly/4jmTMH9) and the Licensing Guide is updated for those new innovations. When you implement these in your Agents you consume messages and now there’s a splendid table on page 19 which details the different types of activity and how many messages they consume. There’s also a reduction (from 30 to 10) in the number of messages required for answers grounded in the tenant graph.

Find this updated guide here: https://bit.ly/4j4MMyq.