Income Taxes - Schedule of Components of Loss Before Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Income Tax Disclosure [Abstract]
United States	$ 494	$ (99,978)	$ (138,936)
Foreign	(56,185)	(31,621)	(24,580)
Loss before provision for (benefit from) income taxes	$ (55,691)	$ (131,599)	$ (163,516)