Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning balance (shares) at Jan. 31, 2023				3,263,659	31,572,826
Beginning balance at Jan. 31, 2023	$ (146,400)			$ 3	$ 32	$ 1,183,921	$ (322)	$ (1,330,034)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					1,742,989
Vesting of restricted stock units	2				$ 2
Issuance of common stock under employee stock purchase plan (shares)					332,303
Issuance of common stock under employee stock purchase plan	$ 3,406					3,406
Exercise of stock options (shares)	7,638				7,638
Exercise of stock options	$ 65					65
Stock-based compensation expense	64,808					64,808
Other comprehensive income (loss)	142						142
Net loss	(75,569)	$ (6,842)	$ (68,727)					(75,569)
Ending balance (shares) at Jan. 31, 2024				3,263,659	33,655,756
Ending balance at Jan. 31, 2024	(153,546)			$ 3	$ 34	1,252,200	(180)	(1,405,603)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					2,378,046
Vesting of restricted stock units	2				$ 2
Shares repurchased for tax withholdings on vesting of restricted stock (shares)					(116,694)
Shares repurchased for tax withholdings on vesting of restricted stock	(820)					(820)
Issuance of common stock under employee stock purchase plan (shares)					273,340
Issuance of common stock under employee stock purchase plan	$ 1,910					1,910
Exercise of stock options (shares)	0
Stock-based compensation expense	$ 57,632					57,632
Other comprehensive income (loss)	(489)						(489)
Net loss	(81,935)	$ (6,946)	$ (74,989)					(81,935)
Ending balance (shares) at Jan. 31, 2025		3,263,659	36,190,448	3,263,659	36,190,448
Ending balance at Jan. 31, 2025	(177,246)			$ 3	$ 36	1,310,922	(669)	(1,487,538)
Increase (Decrease) in Stockholders' Equity (Deficit) [Roll Forward]
Vesting of restricted stock units (shares)					3,041,911
Vesting of restricted stock units	3				$ 3
Shares repurchased for tax withholdings on vesting of restricted stock (shares)					(264,495)
Shares repurchased for tax withholdings on vesting of restricted stock	(3,245)					(3,245)
Issuance of common stock under employee stock purchase plan (shares)					218,685
Issuance of common stock under employee stock purchase plan	$ 1,333					1,333
Exercise of stock options (shares)	0
Stock-based compensation expense	$ 50,642					50,642
Other comprehensive income (loss)	1,791						1,791
Net loss	(59,342)	$ (4,726)	$ (54,616)					(59,342)
Ending balance (shares) at Jan. 31, 2026		3,264,000	39,186,549	3,263,659	39,186,549
Ending balance at Jan. 31, 2026	$ (186,064)			$ 3	$ 39	$ 1,359,652	$ 1,122	$ (1,546,880)