CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		3 Months Ended
		Jul. 31, 2023	Jul. 31, 2022
Cash flows from operating activities:
Net loss		$ (64,358)	$ (71,871)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization		3,056	1,461
Non-cash operating lease cost		274	1,862
Stock-based compensation expense		50,880	56,630
Other		(3,949)	78
Changes in operating assets and liabilities
Accounts receivable	[1]	12,017	(927)
Prepaid expenses, other current assets and other assets	[2]	3,051	2,910
Accounts payable	[3]	(564)	(21,318)
Accrued compensation and employee benefits		(39)	491
Operating lease liabilities		8,204	(991)
Other liabilities	[4]	2,254	(1,106)
Deferred revenue	[5]	(6,890)	(5,477)
Net cash provided by (used in) operating activities		3,936	(38,258)
Cash flows from investing activities:
Purchases of property and equipment		(11,338)	(15,536)
Capitalized software development costs		(1,500)	(1,000)
Purchases of investments		(322,534)	(226,367)
Maturities and sales of investments		250,572	162,429
Net cash (used in) investing activities		(84,800)	(80,474)
Cash flows from financing activities:
Proceeds from exercise of Class A common stock options		9,595	1,087
Taxes paid related to net share settlement of equity awards		(7,118)	0
Net cash provided by financing activities		2,477	1,087
Net decrease in cash, cash equivalents and restricted cash		(78,387)	(117,645)
Cash, cash equivalents and restricted cash at beginning of period		297,395	352,519
Cash and cash equivalents		206,442	221,883
Restricted cash included in other assets, non-current		12,566	12,566
Restricted cash included in prepaid expenses and other current assets		0	425
Cash, cash equivalents and restricted cash at end of period		219,008	234,874
Total cash, cash equivalents and restricted cash		219,008	234,874
Supplemental disclosure of cash flow information—cash paid for income taxes		150	66
Supplemental disclosures of non-cash investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued liabilities		5,764	19,326
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)		778	0
Unpaid liabilities related to intangible purchases		0	1,500
Vesting of early exercised stock options		$ 0	$ 333

[1] Including changes in related party balances of $12,444 and $(2,240) for the three months ended July 31, 2023 and 2022, respectively.

[2] Including changes in related party balances of $(810) and $(1,216) for the three months ended July 31, 2023 and 2022, respectively.

[3] Including changes in related party balances of $248 and $(13,861) for the three months ended July 31, 2023 and 2022, respectively.

[4] Including changes in related party balances of $(2,448) and $(2,536) for the three months ended July 31, 2023 and 2022, respectively.

[5] Including changes in related party balances of $(46) and $(51) for the three months ended July 31, 2023 and 2022, respectively.