UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Revenues	$ 271,713	$ 192,594	$ 754,721	$ 538,474
Cost of revenues	74,802	52,180	211,133	144,720
Gross profit	196,911	140,414	543,588	393,754
Operating expenses:
Research and development	82,707	62,878	226,767	168,903
Sales and marketing	35,081	25,574	91,306	65,679
General and administrative	43,964	38,388	133,399	110,459
Total operating expenses	161,752	126,840	451,472	345,041
Income from operations	35,159	13,574	92,116	48,713
Other (expense) income, net	(503)	569	2,158	(759)
Income before interest income and income taxes	34,656	14,143	94,274	47,954
Interest income	11,793	11,246	33,635	32,000
Income before income taxes	46,449	25,389	127,909	79,954
(Benefit from) provision for income taxes	(245,746)	2,029	(244,202)	5,287
Net income	292,195	23,360	372,111	74,667
Comprehensive income	$ 292,195	$ 23,360	$ 372,111	$ 74,667
Net income per share attributable to Class A and Class B common stockholders, basic (in usd per share)	$ 6.36	$ 0.53	$ 8.17	$ 1.73
Net income per share attributable to Class A and Class B common stockholders, diluted (in usd per share)	$ 5.95	$ 0.49	$ 7.63	$ 1.57

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities:
Net income	$ 372,111	$ 74,667
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	(239,486)	0
Stock-based compensation expense	101,175	80,690
Depreciation and amortization	10,583	7,193
Accretion on marketable securities, net	(1,458)	(12)
Changes in assets and liabilities:
Deferred revenue	68,844	61,411
Accounts receivable	4,434	(5,209)
Deferred cost of revenues	(14,408)	(13,398)
Prepaid expenses and other current assets	(11,734)	(8,842)
Accounts payable	(2,813)	522
Accrued expenses and other current liabilities	(5,190)	1,351
Noncurrent assets and liabilities	(1,513)	3,796
Net cash provided by operating activities	280,545	202,169
Cash flows from investing activities:
Purchases of investments	(99,120)	(81,670)
Maturities of investments	82,077	0
Capitalized software expense and purchases of intangible assets	(6,484)	(8,545)
Purchase of property and equipment	(7,369)	(10,155)
Payment of earn-out related to a previous acquisition	(500)	0
Acquisitions of companies, net of $0 cash acquired	(33,100)	(6,595)
Net cash used for investing activities	(64,496)	(106,965)
Cash flows from financing activities:
Proceeds from exercise of stock options	9,702	11,595
Net cash provided by financing activities	9,702	11,595
Net increase in cash, cash equivalents and restricted cash	225,751	106,799
Cash, cash equivalents and restricted cash - Beginning of period	788,526	750,345
Cash, cash equivalents and restricted cash - End of period	1,014,277	857,144
Supplemental disclosure of cash flow information:
Cash paid for income taxes	11,722	6,797
Supplemental disclosure of noncash investing activities:
Property and equipment included in Current liabilities	2,179	1,094
Landlord incentive included in Other assets	6,809	0
Right of use assets obtained in exchange for new operating lease liabilities	36,025	33,039
Right of use assets disposed of or adjusted for modifying operating leases liabilities	$ 0	$ 1,303

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 1,011,542	$ 785,791
Short-term investments	109,912	91,854
Accounts receivable	124,489	128,923
Deferred cost of revenues	94,570	80,162
Income tax receivable	9,886	27
Prepaid expenses and other current assets	16,706	14,831
Total current assets	1,367,105	1,101,588
Operating lease right-of-use assets	79,266	47,495
Long-term investments	98,735	98,292
Intangible assets, net	27,968	19,899
Property and equipment, net	24,626	18,943
Goodwill	35,335	10,538
Restricted cash	2,735	2,735
Deferred tax assets, net	240,172	675
Other assets	9,696	1,563
Total assets	1,885,638	1,301,728
Current liabilities
Deferred revenues	441,728	372,884
Accounts payable	3,568	6,381
Income tax payable	16	6,591
Accrued expenses and other current liabilities	39,228	36,375
Total current liabilities	484,540	422,231
Long-term obligation under operating leases	93,257	54,656
Deferred tax liabilities, net	302	291
Total liabilities	578,099	477,178
Commitments and contingencies (Note 11)
Stockholders’ equity
Class A common stock, $0.0001 par value; 2,000,000 shares authorized as of September 30, 2025 and December 31, 2024; 39,992 and 38,730 issued and outstanding at September 30, 2025 and December 31, 2024, respectively Class B common stock, $0.0001 par value; 30,000 shares authorized as of September 30, 2025 and December 31, 2024; 6,117 and 6,206 issued and outstanding at September 30, 2025 and December 31, 2024, respectively	5	4
Additional paid-in capital	1,061,270	950,393
Retained earnings (Accumulated deficit)	246,264	(125,847)
Total stockholders’ equity	1,307,539	824,550
Total liabilities and stockholders' equity	$ 1,885,638	$ 1,301,728