From the source

Customize the reasoning level for Copilot cloud agent

Capability change

Image published with the post by GitHub — Image from github.blog

GitHub Copilot cloud agent now allows users to set the reasoning level for models that support it, controlling how much the model reasons before responding.

From the source
When you delegate a task to GitHub Copilot cloud agent, you can now set the reasoning level for models that support it.
github.blog

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