Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Feb. 09, 2026	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total		$ 82,590	$ 40,739	$ 195,495	$ 118,659
Privately Held Company
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Consideration transferred, equity interest	$ 4,000
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total		890	379	3,081	694
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total		12,627	9,288	36,213	28,342
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total		49,395	21,711	115,212	58,749
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total		$ 19,678	$ 9,361	$ 40,989	$ 30,874