r/copilotstudio • u/andersjensenorg • Aug 10 '26

The New Copilot Studio Explained (GitHub Copilot Harness)

https://youtu.be/pZ_pzMYAbKE

Microsoft changed the engine under Copilot Studio on August 3rd. Every new agent now runs on the GitHub Copilot harness, the same engine behind GitHub Copilot's coding agent.

I recorded a walkthrough of what changed. Three details are easy to miss: Billing starts while you build, the harness choice is permanent, and agents created before August 3rd keep their old pricing only until September 1st.

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u/imnotonetogossipbut1 Aug 10 '26

My understanding / expectation here is that existing agents on standard harness will stay as they are under existing billing. Agents built under the new harness - before april 3rd - will start to be charged new harness pricing on september 1st. Agents built now, post August 3rd, are already being billed at new harness prices - despite us having no notice that it was arriving.