CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	RSUs	Common Stock	Common Stock RSUs	Additional Paid-In Capital	Additional Paid-In Capital RSUs	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
Beginning Balance, shares (in shares) at Apr. 30, 2023			113,943
Beginning Balance, Amount at Apr. 30, 2023	$ 929,665		$ 113		$ 1,740,174		$ (385)	$ (810,237)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)			2,534
Issuance of Class A common stock upon exercise of stock options, net of repurchases	11,319		$ 2		11,317
Vesting of early exercised Class A common stock options	406				406
Shares withheld related to net share settlement of equity awards (in shares)			(283)
Shares withheld related to net share settlement of equity awards	(10,485)				(10,485)
Vesting of restricted stock units (in shares)				5,004
Vesting of restricted stock units		$ 34,475		$ 5		$ 34,470
Issuance of Class A common stock under employee stock purchase plan (in shares)			429
Issuance of Class A common stock under employee stock purchase plan	5,055		$ 1		5,054
Stock-based compensation expense	133,514				133,514
Other comprehensive income	815						815
Net loss	(206,769)							(206,769)
Ending Balance, shares (in shares) at Jan. 31, 2024			121,627
Ending Balance, Amount at Jan. 31, 2024	897,995		$ 121		1,914,450		430	(1,017,006)
Beginning Balance, shares (in shares) at Oct. 31, 2023			119,653
Beginning Balance, Amount at Oct. 31, 2023	911,276		$ 119		1,856,307		(775)	(944,375)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)			283
Issuance of Class A common stock upon exercise of stock options, net of repurchases	1,209				1,209
Vesting of early exercised Class A common stock options	112				112
Shares withheld related to net share settlement of equity awards (in shares)			(30)
Shares withheld related to net share settlement of equity awards	(720)				(720)
Vesting of restricted stock units (in shares)				1,721
Vesting of restricted stock units		13,006		$ 2		13,004
Stock-based compensation expense	44,538				44,538
Other comprehensive income	1,205						1,205
Net loss	(72,631)							(72,631)
Ending Balance, shares (in shares) at Jan. 31, 2024			121,627
Ending Balance, Amount at Jan. 31, 2024	897,995		$ 121		1,914,450		430	(1,017,006)
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)	3,169		3,171
Issuance of Class A common stock upon exercise of stock options, net of repurchases	$ 19,642		$ 3		19,639
Vesting of early exercised Class A common stock options	251				251
Shares withheld related to net share settlement of equity awards (in shares)			(281)
Shares withheld related to net share settlement of equity awards	(7,496)				(7,496)
Vesting of restricted stock units (in shares)				5,381
Vesting of restricted stock units		40,745		$ 6		40,739
Issuance of Class A common stock under employee stock purchase plan (in shares)			378
Issuance of Class A common stock under employee stock purchase plan	5,009				5,009
Stock-based compensation expense	136,818				136,818
Other comprehensive income	855						855
Net loss	(209,000)							(209,000)
Ending Balance, shares (in shares) at Jan. 31, 2025			132,355
Ending Balance, Amount at Jan. 31, 2025	860,177		$ 132		2,158,686		292	(1,298,933)
Beginning Balance, shares (in shares) at Oct. 31, 2024			128,781
Beginning Balance, Amount at Oct. 31, 2024	858,961		$ 128		2,077,044		521	(1,218,732)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of Class A common stock upon exercise of stock options, net of repurchases (in shares)			2,107
Issuance of Class A common stock upon exercise of stock options, net of repurchases	15,175		$ 2		15,173
Vesting of early exercised Class A common stock options	35				35
Shares withheld related to net share settlement of equity awards (in shares)			(56)
Shares withheld related to net share settlement of equity awards	(1,709)				(1,709)
Vesting of restricted stock units (in shares)				1,523
Vesting of restricted stock units		$ 17,212		$ 2		$ 17,210
Stock-based compensation expense	50,933				50,933
Other comprehensive income	(229)						(229)
Net loss	(80,201)							(80,201)
Ending Balance, shares (in shares) at Jan. 31, 2025			132,355
Ending Balance, Amount at Jan. 31, 2025	$ 860,177		$ 132		$ 2,158,686		$ 292	$ (1,298,933)