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
	Jul. 31, 2025	Jul. 31, 2024
Numerator
Net loss attributable to common stockholders	$ (116,769)	$ (62,827)
Denominator
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, basic (in shares)	135,375	124,979
Weighted-average shares used in computing net loss per share attributable to Class A and Class B common stockholders, diluted (in shares)	135,375	124,979
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)	$ (0.86)	$ (0.50)
Diluted net loss per Class A and Class B common shares (in dollars per share)	$ (0.86)	$ (0.50)