Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Deferred tax assets:
Net operating loss carryforwards	$ 325,465	$ 317,489
Accruals and reserves	10,640	12,643
Stock-based compensation	4,945	6,512
Deferred revenue	14,452	29,376
Research and development	50,417	90,110
Depreciation and amortization	0	1,459
Lease liabilities	14,586	8,255
Other	11,405	6,428
Total deferred tax assets, gross	431,910	472,272
Less: valuation allowance	(150,535)	(406,251)
Total deferred tax assets, net of valuation allowance	281,375	66,021
Deferred tax liabilities:
Intangible assets	(4,479)	(1,431)
Right-of-use assets	(10,886)	(5,728)
Commissions	(34,677)	(30,871)
Depreciation and amortization	(2,902)	0
Other	(4,729)	(3,825)
Total deferred tax liabilities	(57,673)	(41,855)
Net deferred tax assets	223,702	24,166
Net deferred tax assets	233,401	27,963
Net deferred tax liabilities (included in other liabilities, non-current)	$ (9,699)	$ (3,797)