Consolidated Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 41,484	$ 7,391
Less: accumulated depreciation	(5,833)	(2,679)
Total property and equipment, net	35,651	4,712
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,064	0
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,467	6,470
Office furniture
Property, Plant and Equipment [Line Items]
Property and equipment, gross	353	242
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,159	437
Servers and workstations
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 441	$ 242