Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 170,313	$ 155,276
Less: Accumulated depreciation and amortization	(82,000)	(59,440)
Total property and equipment, net	88,313	95,836
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total gross property and equipment	99,333	104,150
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Total gross property and equipment	51,577	35,112
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total gross property and equipment	12,858	12,689
Desktop and other computer equipment
Property, Plant and Equipment [Line Items]
Total gross property and equipment	3,114	2,828
Construction in progress
Property, Plant and Equipment [Line Items]
Total gross property and equipment	$ 3,431	$ 497