Equity-Based Compensation - Summary of classification of equity-based compensation expense related to incentive units (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Aug. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense	$ 0	$ 46,277	$ 23,332	$ 6,103
Research and development expense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense		22,381	9,964	1,574
General and administrative expense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense		$ 23,896	$ 13,368	$ 4,529