*** Updated information – https://blog.ciaops.com/2025/12/01/copilot-agents-licensing-usage-update/
Yes, a 25,000 message quota is included with each Microsoft 365 Copilot license for Copilot Studio and is a monthly allowance—not a one-time allocation.
Key Details:
- The quota is per license, per month 1.
- It resets each month and applies to all messages sent to the agent, including those from internal users, external Entra B2B users, and integrations 2.
- Once the quota is exhausted, unlicensed users will no longer receive responses unless your tenant has:
- Enabled Pay-As-You-Go (PAYG) billing, or
- Purchased additional message packs (each pack includes 25,000 messages/month at $200) 2.
This means in a setup where only the agent creator has a license of M365 Copilot, any agent created will continue to work with internal data (i.e. inside the agent, like uploaded PDFs, or data inside the tenant, such as SharePoint sites) for all unlicensed users until that monthly creator license quota is used up.
Thus, each Microsoft 365 Copilot license includes:
- 25,000 messages per month for use with Copilot Studio agents.
So with 2 licensed users, the tenant receives
2 × 25,000 = 50,000 messages per month
This quota is shared across all users (internal and external) who interact with your Copilot Studio agents.
References:
2. https://www.microsoft.com/en-us/microsoft-365/copilot/pricing/copilot-studio
CIAOPS 
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