Hey @cjswayne, thanks for the report and the recording.
This is currently expected: when Default Model is set to “Cursor Default”, new chats that start from an older Grok model get moved to the newest one (Grok 4.7).
You can turn this off:
Open Cursor Settings (Ctrl+Shift+J).
Go to Agents → Conversation.
Set Default Model to Last Used.
Select Grok 4.5 in the model picker, then start a new chat.
Cursor staff’s explanation confirms that this is intentional when “Default Model” is set to “Cursor Default.” That intentional behavior is the problem.
A default that ignores my usage history and moves new agents to Cursor’s currently promoted model is not neutral. It steers model usage and can change cost, behavior, and output quality without the user choosing it. In my case, most of my agents use a different model, yet a new agent opened under a folder defaults to Grok 4.7 and initially will not let me change it. Requiring users to discover an opt-out setting makes this feel coercive.
Please change the default behavior to:
Use the model that the majority of that user’s recent agents use, or at minimum the last-used model.
Let the user explicitly pin a global default and optionally a workspace default.
Never replace that preference because a newer or promoted model becomes available.
Always keep the model selector editable before the first prompt is sent.
“Cursor Default” should be an explicit opt-in recommendation, not a mechanism for silently overriding the user’s established preference.