BALANCE SHEET COMPONENTS - Schedule of prepaid expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Software licenses	$ 73	$ 112
Professional services	62	18
Rent	38	38
Insurance	37	27
Equity offering costs	29	146
Marketing programs and conferences	3	21
Other	16	15
Total prepaid expenses and other current assets	$ 258	$ 377