BALANCE SHEET COMPONENTS - Schedule of prepaid expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Software licenses	$ 126	$ 127
Equity offering costs	79	29
Insurance	55	47
Rent	32	32
Marketing programs and conferences	31	25
Professional services	15	14
Other	0	23
Total prepaid expenses and other current assets	$ 338	$ 297