CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue:
Total revenue	$ 82,056	$ 65,900	$ 73,390
Cost of revenue:
Total cost of revenue	33,225	49,044	33,930
Gross profit	48,831	16,856	39,460
Operating expenses:
Research and development	37,800	55,616	88,044
Sales and marketing	41,567	39,073	59,494
General and administrative	39,810	49,613	77,596
Other	4,065	18,164	7,346
Total operating expenses	123,242	162,466	232,480
Loss from operations	(74,411)	(145,610)	(193,020)
Interest income	5,020	7,450	3,384
Interest expense	(1,261)	0	(2)
Change in fair value of warrant liabilities	(1,859)	4,544	20,859
Other income (expense), net	(13)	(2)	98
Loss before provision for income taxes	(72,524)	(133,618)	(168,681)
Provision (benefit) for income taxes	(32)	82	42
Net loss and comprehensive loss	$ (72,492)	$ (133,700)	$ (168,723)
Net loss per common share attributable to Class A and B common stockholders - basic (in dollars per share)	$ (0.34)	$ (0.65)	$ (0.84)
Net loss per common share attributable to Class A and B common stockholders - diluted (in dollars per share)	$ (0.34)	$ (0.65)	$ (0.84)
Weighted-average common shares used to compute net loss per share attributable to Class A and Class B common stockholders - basic (in shares)	211,682,760	205,385,544	199,848,386
Weighted-average common shares used to compute net loss per share attributable to Class A and Class B common stockholders - diluted (in shares)	211,682,760	205,385,544	199,848,386
Product
Revenue:
Total revenue	$ 54,200	$ 40,036	$ 50,263
Cost of revenue:
Total cost of revenue	24,380	40,655	26,804
Software and other services
Revenue:
Total revenue	27,856	25,864	23,127
Cost of revenue:
Total cost of revenue	$ 8,845	$ 8,389	$ 7,126