Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property Plant And Equipment [Line Items]
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]	Leasehold Improvements
Total property and equipment	$ 41,435	$ 37,463
Less: Accumulated depreciation and amortization	(13,162)	(8,753)
Property and equipment, net	28,273	28,710
Laboratory Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	$ 12,863	7,503
Useful life (in years)	3 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	$ 26,617	19,959
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	$ 951	184
Useful life (in years)	3 years
Construction In Progress
Property Plant And Equipment [Line Items]
Total property and equipment	$ 473	9,292
Computer Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	$ 178	172
Useful life (in years)	3 years
Software
Property Plant And Equipment [Line Items]
Total property and equipment	$ 353	$ 353
Useful life (in years)	3 years