Net Loss Per Share Attributable to Common Stockholders - Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Numerator
Net loss attributable to common stockholders	$ (65,972)	$ (69,780)	$ (128,799)	$ (134,138)
Denominator
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	127,870	118,656	126,434	117,125
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	127,870	118,656	126,434	117,125
Basic and diluted net loss per share attributable to common stockholders
Basic net loss per Class A and Class B common shares (in dollars per share)	$ (0.52)	$ (0.59)	$ (1.02)	$ (1.15)
Diluted net loss per Class A and Class B common shares (in dollars per share)	$ (0.52)	$ (0.59)	$ (1.02)	$ (1.15)