CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2026	Apr. 30, 2025
Income Statement [Abstract]
Revenue	$ 276,657	$ 229,029
Cost of revenue	77,965	56,532
Gross profit	198,692	172,497
Operating expenses:
Research and development	95,770	72,253
Sales and marketing	132,111	133,881
General and administrative	50,497	48,679
Restructuring	32	5,167
Total operating expenses	278,410	259,980
Loss from operations	(79,718)	(87,483)
Interest income, net	6,827	12,290
Other income, net	2,490	492
Loss before income taxes	(70,401)	(74,701)
Provision for income taxes	5,763	133,492
Net loss	$ (76,164)	$ (208,193)
Net loss per share attributable to Class A and Class B common stockholders, basic (in USD per share)	$ (0.23)	$ (0.63)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in USD per share)	$ (0.23)	$ (0.63)
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	337,000,297	327,976,349
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	337,000,297	327,976,349