Hi @Sankar_Kumar Thanks for the request.
You can already switch models from the Agents window input. Type / followed by a model name, like /grok or /composer, then select it from the list.
Setting the effort in the same command (/grok high) is not supported yet. After you pick the model, you can cycle effort with Cmd+Shift+/ on Mac, or Ctrl+Shift+/ on Windows. Make sure the Agents input is focused. It only cycles when the selected model has a cycleable parameter (usually effort or thinking).
Let me know if /grok or /composer doesn’t show up for you.