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Property and Equipment, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024	Jan. 31, 2025
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 65,455		$ 65,455		$ 59,112
Less: accumulated depreciation and amortization	(25,366)		(25,366)		(20,562)
Total property and equipment, net	40,089		40,089		38,550
Depreciation and amortization	2,600	$ 2,400	5,300	$ 4,600
Assets written off	600	200	800	2,300
Removed assets				300
Capitalized internal-use software	1,300	1,700	2,900	3,300
Cost of revenue
Property, Plant and Equipment [Line Items]
Amortization for capital internal-use software	(1,100)	$ (800)	(2,000)	$ (1,500)
Capitalized internal-use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	22,060		22,060		19,144
Computer equipment, office equipment, and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,063		13,063		10,659
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	21,625		21,625		20,945
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 8,707		$ 8,707		$ 8,364