Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Number of Shares
Outstanding, beginning balance (in shares)	6,008,541
Granted, (in shares)	6,920,932
Forfeited (in shares)	(1,085,977)
Outstanding, ending balance (in shares)	11,843,496	6,008,541
Exercisable, ending balance (in shares)	2,851,579
Vested and expected to vest, ending balance (in shares)	9,730,725
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 2.97
Granted (in dollars per share)	0.92
Forfeited (in dollars per share)	1.56
Outstanding, ending balance (in dollars per share)	1.90	$ 2.97
Exercisable (in dollars per share)	4.63
Vested and expected to vest (in dollars per share)	$ 2.09
Weighted Average Contractual Term (in Years)
Outstanding	8 years 7 months 6 days	8 years 7 months 6 days
Exercisable	6 years 9 months 18 days
Vested and expected to vest	8 years 4 months 24 days
Aggregate Intrinsic Value (in Thousands)
Outstanding beginning balance	$ 24
Forfeited	1
Outstanding ending balance	269	$ 24
Exercisable	0
Vested and expected to vest	$ 200