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
	Apr. 30, 2026	Apr. 30, 2025
Numerator:
Net loss attributable to Class A and Class B common stockholders	$ (76,164)	$ (208,193)
Denominator:
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
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)