CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning Balance, shares (in shares) at Apr. 30, 2024		123,706
Beginning Balance, Amount at Apr. 30, 2024	$ 873,353	$ 123	$ 1,963,726	$ (563)	$ (1,089,933)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)		430
Issuance of Class A common stock upon exercise of stock options, net of repurchases	3,125	$ 1	3,124
Vesting of early exercised Class A common stock options	105		105
Shares withheld related to net share settlement of equity awards (in shares)		(107)
Shares withheld related to net share settlement of equity awards	(2,945)		(2,945)
Vesting of restricted stock units (in shares)		2,176
Vesting of restricted stock units	22,280	$ 2	22,278
Stock-based compensation expense	40,986		40,986
Other comprehensive loss	844			844
Net loss	(62,827)				(62,827)
Ending Balance, shares (in shares) at Jul. 31, 2024		126,205
Ending Balance, Amount at Jul. 31, 2024	874,921	$ 126	2,027,274	281	(1,152,760)
Beginning Balance, shares (in shares) at Apr. 30, 2025		133,938
Beginning Balance, Amount at Apr. 30, 2025	$ 838,303	$ 133	2,216,284	521	(1,378,635)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)	267	266
Issuance of Class A common stock upon exercise of stock options, net of repurchases	$ 1,286		1,286
Vesting of early exercised Class A common stock options	5		5
Vesting of restricted stock units (in shares)		2,657
Vesting of restricted stock units	22,041	$ 3	22,038
Stock-based compensation expense	54,553		54,553
Other comprehensive loss	(595)			(595)
Net loss	(116,769)				(116,769)
Ending Balance, shares (in shares) at Jul. 31, 2025		136,861
Ending Balance, Amount at Jul. 31, 2025	$ 798,824	$ 136	$ 2,294,166	$ (74)	$ (1,495,404)