CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Cash flows from operating activities
Net loss	$ (290,138)	$ (83,515)	$ (53,370)
Adjustments to reconcile net loss to cash from operating activities:
Stock-based compensation expense	200,568	39,223	9,461
Depreciation and amortization expense	2,498	888	235
Non-cash operating lease cost	2,382	2,098	1,263
Other	14	57	5
Changes in operating assets and liabilities:
Accounts receivable	(33,364)	(41,407)	(27,698)
Deferred contract acquisition costs	(39,086)	(19,984)	(15,920)
Prepaid expenses and other assets	(13,626)	2,653	(3,436)
Accounts payable	8,464	1,093	2,423
Accrued expenses and other liabilities	(895)	3,277	360
Accrued compensation and benefits	32,379	7,536	6,646
Operating lease liabilities	(2,567)	(1,789)	(801)
Deferred revenue	75,992	46,911	45,605
Customer deposits	1,164	3,336	6,862
Net cash used in operating activities	(56,215)	(39,623)	(28,365)
Cash flows from investing activities
Purchases of property and equipment	(214)	(4,304)	(980)
Capitalized internal-use software	(6,382)	(2,920)
Purchase of short-term investments		(50,000)	(120,000)
Proceeds from maturities of short-term investments		80,000	167,000
Net cash (used in) provided by investing activities	(6,596)	22,776	46,020
Cash flows from financing activities
Proceeds from initial public offering, net of underwriting discounts and commissions	1,252,974
Taxes paid related to net share settlement of equity awards	(105,642)
Payments of loan issuance costs		(229)
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs		174,724
Proceeds from issuance of common stock upon exercise of stock options	5,036	2,629	1,048
Proceeds from issuance of common stock related to early exercised stock options			23
Payments of deferred offering costs	(4,522)
Net cash provided by financing activities	1,147,846	177,124	1,071
Net increase in cash, cash equivalents, and restricted cash	1,085,035	160,277	18,726
Cash, cash equivalents, and restricted cash beginning of period	272,576	112,299	93,573
Cash, cash equivalents, and restricted cash end of period	1,357,611	272,576	112,299
Supplemental disclosure of cash flow information
Cash paid for income taxes	739	452	119
Cash paid for operating lease liabilities	3,291	2,479	1,379
Supplemental disclosure of noncash investing and financing activities
Purchase of property and equipment included in accounts payable			1,283
Operating lease right-of-use assets obtained in exchange for new lease obligations	2,036		10,829
Tenant allowance included in prepaid expenses and other current assets			1,666
Unpaid deferred offering costs	1,527
Unpaid taxes related to net share settlement of equity awards	5,347
Conversion of convertible preferred stock to common stock upon initial public offering	349,113
Capitalized stock-based compensation expense	3,562
Vesting of early exercised stock options	$ 18	$ 99	$ 190