Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2025	Jan. 31, 2024
Deferred tax assets:
Net operating loss carryforwards	$ 330,908	$ 131,449
Capitalized research and development expenditures	208,690	74,843
Research and development credit carryforward	117,837	52,152
Deferred revenue	151,326	119,531
Stock-based compensation	68,587	3,716
Operating lease liabilities	4,863	7,063
Other	26,505	9,578
Total deferred tax assets	908,716	398,332
Less: valuation allowance	(863,039)	(371,027)
Total deferred tax assets, net	45,677	27,305
Deferred tax liabilities:
State income taxes	(28,936)	(13,493)
Capitalized internal-use software	(5,472)	(3,769)
ROU assets	(4,219)	(6,402)
Other	(18,394)	(13,744)
Total deferred tax liabilities	(57,021)	(37,408)
Net deferred tax assets (liabilities)	$ (11,344)	$ (10,103)