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BALANCE SHEET COMPONENTS - Schedule of prepaid expenses (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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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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