Balance Sheet Components - Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2025	Jan. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued expenses	$ 30,983	$ 41,773
Accrued bonuses	49,104	31,212
Accrued sales commissions	27,627	18,859
Accrued payroll-related expenses, taxes, and benefits	38,533	20,197
Operating lease liabilities	10,087	10,461
Other	6,268	432
Total accrued expenses and other current liabilities	$ 162,602	$ 122,934