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		9 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2025	Jan. 31, 2024
Numerator
Net loss attributable to common stockholders	$ (80,201)	$ (72,631)	$ (209,000)	$ (206,769)
Denominator
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	130,382	120,486	127,752	118,259
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	130,382	120,486	127,752	118,259
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)	$ (0.62)	$ (0.60)	$ (1.64)	$ (1.75)
Diluted net loss per Class A and Class B common shares (in dollars per share)	$ (0.62)	$ (0.60)	$ (1.64)	$ (1.75)