Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 586,566	$ 75,756
Accounts receivable, net of allowances of $719 and $631, respectively	47,944	45,641
Contract assets	674	356
Deferred contract costs	2,047	1,830
Prepaid expenses and other current assets	2,675	1,661
Total current assets	639,906	125,244
Property and equipment, net	2,206	2,241
Contract assets, noncurrent	610	503
Deferred contract costs, noncurrent	3,351	3,346
Deferred offering costs	0	2,792
Security deposit	298	298
Total assets	646,371	134,424
Current liabilities:
Accounts payable	6,151	9,104
Accrued expenses and other current liabilities	70,976	42,578
Unearned revenue	1,016	585
Redeemable convertible preferred stock warrant liability	0	19,735
Total current liabilities	78,143	72,002
Unearned revenue, noncurrent	375	435
Deferred rent, noncurrent	2,344	2,402
Other liabilities, noncurrent	271	329
Total liabilities	81,133	75,168
Commitments and contingencies
Redeemable convertible preferred stock, $0.001 par value, zero and 60,509,120 shares authorized at March 31, 2021 and December 31, 2020, respectively; zero and 58,962,749 issued and outstanding at March 31, 2021 and December 31, 2020, respectively	0	111,737
Stockholders’ equity (deficit):
Class A common stock, $0.001 par value; 1,700,000,000 and zero shares authorized at March 31, 2021 and December 31, 2020, respectively; 26,932,253 and zero shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively. Class B common stock, $0.001 par value; 185,000,000 shares authorized at March 31, 2021 and December 31, 2020, respectively; 120,066,125 and 22,320,286 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively	147	22
Preferred stock, $0.001 par value; 20,000,000 and zero shares authorized at March 31, 2021 and December 31, 2020, respectively.	0	0
Additional paid-in capital	660,849	16,798
Accumulated deficit	(95,758)	(69,301)
Total stockholders’ equity (deficit)	565,238	(52,481)
Total liabilities, redeemable convertible preferred stock and stockholders’ equity (deficit)	$ 646,371	$ 134,424