Stock-based compensation - Schedule of Stock-based Compensation Expense Recorded in Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	$ 534,138	$ 0	$ 0
Cost of Revenue Genomics [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	13,625	0	0
Cost of Revenue Data and Services [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	8,530	0	0
Technology Research and Development [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	58,473	0	0
Research and Development Expense [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	47,638	0	0
Selling, General and Administrative Expenses [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, expense	$ 405,872	$ 0	$ 0