Segment Reporting - Summary of Consolidated Net Loss (Details) $ in Thousands	3 Months Ended
	Apr. 30, 2025 USD ($) segment	Apr. 30, 2024 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment	1
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Total revenue	$ 278,481	$ 187,315
Less:
Stock-based compensation expense	73,540	630,330
Interest expense	9,813	10,624
Income tax expense (benefit)	1,274	(1,051)
Plus:
Interest income	7,696	2,942
Net loss	(102,104)	(732,091)
Software And Services
Less:
Remaining cost of revenue	5,124	6,511
Remaining research and development expenses	59,883	59,054
Remaining sales and marketing expenses	144,404	137,922
Remaining general and administrative expenses	33,208	32,864
Stock-based compensation expense	73,540	630,330
Depreciation and amortization	7,818	6,954
Amortization of intangibles	960	903
Interest expense	9,813	10,624
Income tax expense (benefit)	1,274	(1,051)
Other items	5,622	623
Plus:
Interest income	7,696	2,942
Net loss	(102,104)	(732,091)
Subscription
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]
Total revenue	265,661	172,195
Subscription | Software And Services
Less:
Adjusted subscription cost of revenue	$ 46,635	$ 37,614