CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Statement of Comprehensive Income [Abstract]
Net loss	$ (189,024)	$ (255,536)	$ (257,030)
Other comprehensive income (loss), net of tax:
Net unrealized gains (losses) on marketable securities	469	(2)	679
Foreign currency translation adjustments	7,587	(3,613)	(42)
Total other comprehensive income (loss)	8,056	(3,615)	637
Comprehensive loss	$ (180,968)	$ (259,151)	$ (256,393)