Describe the bug
I have now twice lost significant work when the auto mode chooses an model with a reasoning level which is not available. In my case, it has attempted to choose Claude Sonnet 4.5 - medium which, according to the /model model chooser, is not available. The CLI then crashes the current session and I can't find a way to restore it.
Affected version
GitHub Copilot CLI 1.0.79
Steps to reproduce the behavior
Not predictably reproducible because I don't know how auto mode selects the models, but clearly it should not specify a reasoning model which is not available. I can't pick the model manually.
Expected behavior
I don't expect it to crash, obviously, but I expect auto mode to select only valid models. Also, maybe the session should be saved before auto mode changes models as a guard against crashes and invalid model selection.
Additional context
No response
Describe the bug
I have now twice lost significant work when the
automode chooses an model with a reasoning level which is not available. In my case, it has attempted to chooseClaude Sonnet 4.5 - mediumwhich, according to the/modelmodel chooser, is not available. The CLI then crashes the current session and I can't find a way to restore it.Affected version
GitHub Copilot CLI 1.0.79
Steps to reproduce the behavior
Not predictably reproducible because I don't know how
automode selects the models, but clearly it should not specify a reasoning model which is not available. I can't pick the model manually.Expected behavior
I don't expect it to crash, obviously, but I expect
automode to select only valid models. Also, maybe the session should be saved beforeautomode changes models as a guard against crashes and invalid model selection.Additional context
No response