NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2025	Jul. 31, 2024	Jul. 31, 2025	Jul. 31, 2024
Numerator:
Net loss attributable to Class A and Class B common stockholders	$ (72,019)	$ (69,184)	$ (280,212)	$ (139,289)
Denominator:
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	330,938,421	312,615,531	329,481,933	310,358,089
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	330,938,421	312,615,531	329,481,933	310,358,089
Net loss per share attributable to Class A and Class B common stockholders, basic (in USD per share)	$ (0.22)	$ (0.22)	$ (0.85)	$ (0.45)
Net loss per share attributable to Class A and Class B common stockholders, diluted (in USD per share)	$ (0.22)	$ (0.22)	$ (0.85)	$ (0.45)