Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock	Additional Paid-in Capital	Accumulated other comprehensive	Accumulated Deficit	Common Stock [Member] Class A and Class B common stock
Beginning balance at Dec. 31, 2020	$ (67,120)		$ 37,704		$ (104,824)
Beginning balance, Shares at Dec. 31, 2020						27,924
Temporary equity, beginning balance, Shares at Dec. 31, 2020		61,717
Temporary equity, beginning balance at Dec. 31, 2020		$ 187,811
Stock-based compensation expense	34,773		34,773
Issuance of redeemable convertible preferred stock, net of issuance costs		$ 199,802
Issuance of redeemable convertible preferred stock, net of issuance costs, shares		6,247
Conversion of redeemable convertible preferred stock to common stock upon Direct Listing	387,613		387,612			$ 1
Temporary equity, Conversion of redeemable convertible preferred stock to common stock upon Direct Listing, Shares		(67,964)
Temporary equity, Conversion of redeemable convertible preferred stock to common stock upon Direct Listing		$ (387,613)
Conversion of redeemable convertible preferred stock to common stock upon Direct Listing, Shares						67,964
Exercise of stock options	16,982		16,982
Exercise of stock options, Shares						10,301
Vesting of early exercised stock options	1,881		1,881
Vesting of restricted stock awards, Shares						2,617
Issuance of common stock in connection with an acquisition	7,402		7,402
Issuance of common stock in connection with an acquisition, Shares						1,070
Net Income (Loss)	(74,983)				(74,983)
Ending balance at Dec. 31, 2021	306,548		486,354		(179,807)	$ 1
Ending balance, Shares at Dec. 31, 2021						109,876
Stock-based compensation expense	68,576		68,576
Exercise of stock options	6,899		6,899
Exercise of stock options, Shares						2,499
Vesting of early exercised stock options	2,323		2,323
Issuance of common stock under employee stock purchase plan, shares						350
Issuance of common stock under employee stock purchase plan	4,738		4,738
Repurchase of unvested stock options	(1)		(1)
Repurchase of unvested stock options, Shares						(8)
Vesting of restricted stock awards, Shares						1,482
Net Income (Loss)	(93,377)				(93,377)
Other comprehensive income (loss), net	(754)			$ (754)
Cumulative impact of Topic 842 adoption	17				17
Ending balance at Dec. 31, 2022	294,969		568,889	(754)	(273,167)	$ 1
Ending balance, Shares at Dec. 31, 2022						114,199
Stock-based compensation expense	90,022		90,022
Exercise of stock options	$ 4,619		4,619
Exercise of stock options, Shares	1,651,124					1,651
Vesting of early exercised stock options	$ 715		715
Issuance of common stock under employee stock purchase plan, shares						474
Issuance of common stock under employee stock purchase plan	4,062		4,062
Tax withholding on net share settlement of restricted stock units	(9,844)		(9,844)
Tax withholding on net share settlement of restricted stock units, Shares						(891)
Repurchase of unvested stock options, Shares						(177)
Vesting of restricted stock awards, Shares						4,754
Net Income (Loss)	(90,363)				(90,363)
Other comprehensive income (loss), net	573			573
Ending balance at Dec. 31, 2023	$ 294,753		$ 658,463	$ (181)	$ (363,530)	$ 1
Ending balance, Shares at Dec. 31, 2023						120,010