Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,154,820)	$ (354,158)	$ (277,746)
Foreign currency translation adjustment, net of tax	(6,274)	(1,355)	(1,009)
Unrealized gain (loss) on available-for-sale securities, net of tax	278	417	(204)
Total other comprehensive loss, net of tax	(5,996)	(938)	(1,213)
Comprehensive loss	$ (1,160,816)	$ (355,096)	$ (278,959)