Equity-Based Compensation - Summary of classification of equity-based compensation expense related to incentive units (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Aug. 31, 2023	Mar. 31, 2025	Mar. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense	$ 0	$ 11,126	$ 4,186
Research and development expense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense		5,372	1,930
General and administrative expense
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Equity-based compensation expense		$ 5,754	$ 2,256