CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Cash flows from operating activities:
Net loss	$ (104,668)	$ (65,972)	$ (221,437)	$ (128,799)
Adjustments to reconcile net loss to net cash used in operating activities
Depreciation and amortization			6,815	6,092
Non-cash operating lease cost			155	203
Stock-based compensation expense			133,628	111,721
Accretion of discounts on marketable securities			(5,300)	(7,618)
Other			277	418
Changes in operating assets and liabilities
Accounts receivable			1,142	(30,051)
Prepaid expenses, other current assets and other assets			(3,412)	(1,993)
Accounts payable			20,987	9,294
Accrued compensation and employee benefits			1,070	(4,815)
Operating lease liabilities			1,074	(1,215)
Other liabilities			(13,150)	19,284
Deferred revenue			(1,880)	(3,172)
Net cash used in operating activities			(80,031)	(30,651)
Cash flows from investing activities:
Purchases of property and equipment			(1,146)	(1,739)
Purchases of marketable securities			(331,188)	(365,926)
Maturities and sales of marketable securities			343,251	348,750
Net cash provided by (used in) investing activities			10,917	(18,915)
Cash flows from financing activities:
Proceeds from issuance of Class A common stock under employee stock purchase plan			4,978	5,009
Proceeds from exercise of Class A common stock options			2,983	4,472
Taxes paid related to net share settlement of equity awards			0	(5,787)
Net cash provided by financing activities			7,961	3,694
Net decrease in cash, cash equivalents and restricted cash			(61,153)	(45,872)
Cash, cash equivalents and restricted cash at beginning of period			176,924	179,712
Cash and cash equivalents	103,205	121,274	103,205	121,274
Restricted cash included in other assets, non-current	12,566	12,566	12,566	12,566
Cash, cash equivalents and restricted cash at end of period	115,771	133,840	115,771	133,840
Cash and cash equivalents	103,205	121,274	103,205	121,274
Restricted cash included in other assets, non-current	12,566	12,566	12,566	12,566
Total cash, cash equivalents and restricted cash	115,771	133,840	115,771	133,840
Cash and cash equivalents	103,205	121,274	103,205	121,274
Restricted cash included in other assets, non-current	$ 12,566	$ 12,566	12,566	12,566
Supplemental disclosure of cash flow information—cash paid for income taxes			649	534
Supplemental disclosures of non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued liabilities			227	117
Right-of-use assets obtained in exchange for lease obligations (including remeasurement of right-of-use assets and lease liabilities due to changes in the timing of receipt of lease incentives)			(166)
Right-of-use assets obtained in exchange for lease obligations (including remeasurement of right-of-use assets and lease liabilities due to changes in the timing of receipt of lease incentives)				1,345
Vesting of early exercised stock options			$ 7	$ 216