Balance Sheet Components - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Professional fees	$ 1,029	$ 367
Early exercise liability	21	150
Other accrued expenses	143	1,354
Accrued employee termination benefits	1,535	0
Total accrued expenses and other current liabilities	$ 2,728	$ 1,871