Other Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid research and development	$ 721	$ 1,504
Software and subscriptions expense	506	402
Prepaid insurance costs	379	559
Prepaid lease costs	264	270
Unbilled receivable	0	155
Other	388	342
Total prepaid expenses and other current assets	$ 2,258	$ 3,232