
Microsoft have announced General Availability of a new feature within Copilot Studio – the GitHub Copilot harness. This sits alongside the already available Standard harness and Copilot Chat harness.
This new capability means your in-house created agents can now use the same coding and reasoning capabilities as Copilot Cowork and GitHub Copilot – putting new capabilities on the table for your AI agents.
While that is all well and good I would, not surprisingly, like to focus in on a licensing/pricing change. The Microsoft post casually states:
“Agents running on the GitHub Copilot harness use usage-based billing for all work, regardless of Microsoft 365 Copilot licensing.”
That, potentially, has quite the impact. Agents built using the 2 existing harnesses have their Copilot Credits covered by a user’s M365 Copilot license – this is not the case when agents are built with the GitHub Copilot harness. This means those agents will use Copilot Credits and burn pre-purchased amounts or incur PAYG costs.
To be clear, Microsoft aren’t removing anything or forcing this more expensive model on customers; the GitHub Copilot harness is a new, additional option that organisations can choose to use, or not. However it does add another potential way for people to inadvertently spend money with Microsoft and thus further highlights the need for storng internal governance and awareness/training programs.
See the Microsoft post here – More powerful agents and workflows for autonomous business processes: Introducing a new harness for Copilot Studio | Microsoft Community Hub
Check out the August 2026 Copilot Studio Licensing Guide here – Microsoft Copilot Studio Licensing Guide





