Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Revenue	$ 4,475,446	$ 2,865,507	$ 2,225,012
Cost of revenue	789,177	565,990	431,105
Gross profit	3,686,269	2,299,517	1,793,907
Operating expenses:
Sales and marketing	1,056,859	887,755	744,992
Research and development	557,677	507,878	404,624
General and administrative	657,718	593,481	524,325
Total operating expenses	2,272,254	1,989,114	1,673,941
Income from operations	1,414,015	310,403	119,966
Interest income	(229,181)	(196,792)	(132,572)
Other income (expense), net	14,172	(18,022)	(15,447)
Income before provision for income taxes	1,657,368	489,173	237,091
Provision for income taxes	22,724	21,255	19,716
Net income	1,634,644	467,918	217,375
Less: Net income attributable to noncontrolling interests	9,611	5,728	7,550
Net income attributable to common stockholders	$ 1,625,033	$ 462,190	$ 209,825
Earnings per share attributable to common stockholders, basic	$ 0.69	$ 0.21	$ 0.10
Earnings per share attributable to common stockholders, diluted	$ 0.63	$ 0.19	$ 0.09
Weighted-average shares of common stock outstanding used in computing earnings per share attributable to common stockholders, basic	2,369,612	2,250,163	2,147,446
Weighted-average shares of common stock outstanding used in computing earnings per share attributable to common stockholders, diluted	2,565,197	2,450,818	2,297,927

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating activities
Net income	$ 1,634,644	$ 467,918	$ 217,375
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,145	31,587	33,354
Stock-based compensation	684,033	691,638	475,903
Unrealized and realized (gain) loss from marketable securities, net	21,228	19,306	13,160
Noncash consideration	(37,244)	(52,521)	(46,609)
Other operating activities	15,630	66,034	12,764
Changes in operating assets and liabilities:
Accounts receivable, net	(450,429)	(211,157)	(106,159)
Prepaid expenses and other assets	51,979	11,883	(2,955)
Accounts payable and accrued liabilities	4,659	96,793	21,063
Contract liabilities	238,688	76,796	143,859
Other liabilities	(54,860)	(44,412)	(49,572)
Net cash provided by operating activities	2,134,473	1,153,865	712,183
Investing activities
Purchases of property and equipment	(33,882)	(12,634)	(15,114)
Purchases of marketable securities	(7,702,060)	(5,395,913)	(5,636,406)
Proceeds from sales and redemption of marketable securities	5,026,315	5,073,507	2,889,268
Purchases of privately-held securities	(72,924)	(5,615)	0
Other investing activities	(1,000)	0	51,072
Net cash used in investing activities	(2,783,551)	(340,655)	(2,711,180)
Financing activities
Proceeds from the exercise of common stock options	129,107	745,396	218,238
Repurchases of common stock	74,985	64,196	0
Taxes paid related to net share settlement of equity awards	(81,117)	(218,280)	0
Other financing activities	85	444	601
Net cash provided by (used in) financing activities	(26,910)	463,364	218,839
Effect of foreign exchange on cash, cash equivalents, and restricted cash	7,477	(6,745)	2,930
Net cash provided by (used in) financing activities	(668,511)	1,269,829	(1,777,228)
Cash, cash equivalents, and restricted cash - beginning of period	2,119,936	850,107	2,627,335
Cash, cash equivalents, and restricted cash - end of period	1,451,425	2,119,936	850,107
Noncash investing and financing activities
Accrued taxes related to net share settlement of equity awards	$ 0	$ 84,207	$ 0

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 1,423,796	$ 2,098,524
Marketable securities	5,753,247	3,131,463
Accounts receivable, net	1,042,065	575,048
Prepaid expenses and other current assets	139,066	129,254
Total current assets	8,358,174	5,934,289
Property and equipment, net	51,960	39,638
Operating lease right-of-use assets	200,105	200,740
Other assets	290,153	166,217
Total assets	8,900,392	6,340,884
Current liabilities:
Accounts payable	8,064	103
Accrued liabilities	355,624	427,046
Deferred revenue	408,963	259,624
Customer deposits	357,066	265,252
Operating lease liabilities	45,864	43,993
Total current liabilities	1,175,581	996,018
Deferred revenue, noncurrent	46,216	39,885
Customer deposits, noncurrent	18	1,663
Operating lease liabilities, noncurrent	183,474	195,226
Other noncurrent liabilities	7,092	13,685
Total liabilities	1,412,381	1,246,477
Commitments and Contingencies (Note 8)
Palantir's stockholders’ equity:
Common Stock, $0.001 par value	2,391	2,339
Additional paid-in capital	10,933,325	10,193,970
Accumulated other comprehensive income (loss), net	13,942	(5,611)
Accumulated deficit	(3,562,390)	(5,187,423)
Total Palantir's stockholders’ equity	7,387,268	5,003,275
Noncontrolling interests	100,743	91,132
Total equity	7,488,011	5,094,407
Total liabilities and equity	$ 8,900,392	$ 6,340,884