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BALANCE SHEET COMPONENTS - Schedule of prepaid expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Software licenses	$ 76	$ 127
Equity offering costs	134	29
Insurance	55	47
Rent	32	32
Marketing programs and conferences	12	25
Professional services	15	14
Other	49	23
Total prepaid expenses and other current assets	$ 373	$ 297

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