Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment at cost	$ 13,076	$ 12,291
Less: accumulated depreciation	(2,465)	(1,912)
Property and equipment, net	10,611	10,379
Laboratory Equipment
Property, Plant and Equipment [Line Items]
Property and equipment at cost	9,660	9,644
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property and equipment at cost	87	87
Computer Equipment
Property, Plant and Equipment [Line Items]
Property and equipment at cost	723	593
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment at cost	197	134
Construction in Progress
Property, Plant and Equipment [Line Items]
Property and equipment at cost	$ 2,409	$ 1,833