Marketable Securities - Summary of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Marketable Securities [Line Items]
Amortized Cost	$ 1,260,621	$ 732,131
Unrealized Gains	2,185	652
Unrealized Losses	(383)	(2,136)
Fair Value	1,262,423	730,647
U.S. Treasury Securities
Marketable Securities [Line Items]
Amortized Cost	316,979	158,518
Unrealized Gains	623	190
Unrealized Losses	(34)	(244)
Fair Value	317,568	158,464
US government agency securities
Marketable Securities [Line Items]
Amortized Cost	290,714	179,030
Unrealized Gains	276	33
Unrealized Losses	(81)	(1,248)
Fair Value	290,909	177,815
Commercial Paper
Marketable Securities [Line Items]
Amortized Cost	7,156	15,847
Unrealized Gains	1	5
Unrealized Losses	(2)	0
Fair Value	7,155	15,852
Corporate Securities
Marketable Securities [Line Items]
Amortized Cost	645,772	378,736
Unrealized Gains	1,285	424
Unrealized Losses	(266)	(644)
Fair Value	$ 646,791	$ 378,516