CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash Flows from Operating Activities
Net loss	$ (90,190)	$ (65,952)
Adjustments to reconcile net loss to cash provided by operating activities:
Depreciation and amortization expense	137,156	91,476
Non-cash operating lease costs	47,182	35,624
Amortization of deferred contract acquisition costs	73,700	56,707
Stock-based compensation expense	327,829	243,969
Amortization of debt issuance costs	4,630	2,970
Net accretion of discounts and amortization of premiums on available-for-sale securities	(21,544)	(33,980)
Deferred income taxes	(480)	(1,338)
Provision for bad debt	12,778	7,357
Other	3,074	361
Changes in operating assets and liabilities, net of effect of asset acquisitions and business combinations:
Accounts receivable, net	(47,915)	(12,016)
Contract assets	(6,077)	(2,417)
Deferred contract acquisition costs	(95,518)	(75,851)
Prepaid expenses and other current assets	(62,278)	(25,313)
Other noncurrent assets	4,442	621
Accounts payable	(4,329)	7,817
Accrued expenses and other current liabilities	17,610	7,631
Accrued compensation	9,347	3,685
Operating lease liabilities	(41,930)	(36,020)
Deferred revenue	145,018	46,933
Other noncurrent liabilities	198	857
Net cash provided by operating activities	412,703	253,121
Cash Flows from Investing Activities
Purchases of property and equipment	(230,427)	(111,884)
Capitalized internal-use software	(21,158)	(22,076)
Asset acquisitions and business combinations, net of cash acquired	(6,462)	(15,015)
Purchases of available-for-sale securities	(2,586,569)	(1,187,287)
Maturities of available-for-sale securities	1,328,956	1,173,041
Other investing activities	679	29
Net cash used in investing activities	(1,514,981)	(163,192)
Cash Flows from Financing Activities
Proceeds from settlement of the 2025 capped calls	309,616	0
Gross proceeds from issuance of 2030 convertible senior notes	2,000,000	0
Purchases of capped calls related to the 2030 convertible senior notes	(283,400)	0
Cash paid for issuance costs on 2030 convertible senior notes	(28,989)	0
Cash paid for issuance costs on revolving credit facility	0	(2,148)
Proceeds from the exercise of stock options	29,455	9,031
Proceeds from the early exercise of stock options	0	6
Proceeds from the issuance of common stock for employee stock purchase plan	13,057	10,455
Payment of tax withholding obligation on RSU settlement	(32,183)	(12,591)
Net cash provided by financing activities	2,007,556	4,753
Net increase in cash, cash equivalents, and restricted cash	905,278	94,682
Cash, cash equivalents, and restricted cash, beginning of period	154,214	91,224
Cash, cash equivalents, and restricted cash, end of period	1,059,492	185,906
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	24	70
Cash paid for income taxes, net of refunds	5,842	4,024
Cash paid for operating lease liabilities	49,232	36,623
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Stock-based compensation capitalized for software development	7,664	8,507
Accounts payable and accrued expenses related to property and equipment additions	41,598	36,394
Vesting of early exercised stock options	0	98
Indemnity holdback consideration associated with asset acquisitions and business combinations	0	2,023
Operating lease right-of-use assets obtained in exchange for operating lease liabilities	$ 97,759	$ 43,133