Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Income Statement [Abstract]
Revenue	$ 186,355	$ 133,393
Cost of revenue	50,137	42,583
Gross profit	136,218	90,810
Operating expenses:
Research and development	58,321	55,263
Sales and marketing	115,830	99,171
General and administrative	42,667	51,753
Total operating expenses	216,818	206,187
Loss from operations	(80,600)	(115,377)
Interest income	12,082	10,535
Interest expense	(36)	(607)
Other expense, net	(39)	(359)
Loss before income taxes	(68,593)	(105,808)
Provision for income taxes	1,512	1,061
Net loss	$ (70,105)	$ (106,869)
Net loss per share attributable to Class A and Class B common stockholders, basic (in USD per share)	$ (0.23)	$ (0.37)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in USD per share)	$ (0.23)	$ (0.37)
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	309,547,693	288,300,705
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	309,547,693	288,300,705