Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenue		$ 2,562	$ 1,695	$ 5,852	$ 4,778
Cost of revenue		1,033	654	3,197	1,858
Total gross profit		1,529	1,041	2,655	2,920
Operating expenses:
Research and development		9,459	7,507	29,922	21,799
General and administrative		8,003	5,925	28,875	13,566
Sales and marketing		2,474	2,773	7,862	5,982
Total operating expenses		19,936	16,205	66,659	41,347
Loss from operations		(18,407)	(15,164)	(64,004)	(38,427)
Other income (expense), net:
Interest expense		(1,247)	(1,069)	(2,482)	(3,588)
Change in fair value of warrant liabilities		1,433	2,603	(79)	2,603
Government assistance		1,051	0	1,051	0
Change in fair value of Term Loan		1,701	0	1,356	0
Term Loan debt issuance costs		(725)	0	(2,118)	0
Lincoln Park Purchase Agreement issuance costs		0	(629)	0	(629)
Other income (expense), net		365	948	(59)	1,301
Total other income (expense), net		2,578	1,853	(2,331)	(313)
Net loss		$ (15,829)	$ (13,311)	$ (66,335)	$ (38,740)
Net loss per share, basic (in usd per share)		$ (0.12)	$ (0.11)	$ (0.50)	$ (0.32)
Net loss per share, diluted (in usd per share)		$ (0.12)	$ (0.11)	$ (0.50)	$ (0.32)
Weighted-average shares used in computing net loss per share, basic (in shares)	[1]	133,222,318	116,256,805	131,373,959	122,337,727
Weighted-average shares used in computing net loss per share, diluted (in shares)	[1]	133,222,318	116,256,805	131,373,959	122,337,727
Comprehensive loss:
Net loss		$ (15,829)	$ (13,311)	$ (66,335)	$ (38,740)
Foreign currency translation adjustment, net of tax		15	56	(70)	18
Comprehensive loss		$ (15,814)	$ (13,255)	$ (66,405)	$ (38,722)

[1] Weighted-average shares for the three and nine months ended September 30, 2022 have been retroactively restated to give effect to the Merger.