Stock-Based Compensation - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024 USD ($) $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Number of Shares Underlying Outstanding Options, Beginning balance | shares	9,383,105
Number of Shares Underlying Outstanding Options, Options granted | shares	7,149,453
Number of Shares Underlying Outstanding Options, Options exercised | shares	(92,283)
Number of Shares Underlying Outstanding Options, Options forfeited or cancelled | shares	(285,610)
Number of Shares Underlying Outstanding Options, Ending balance | shares	16,154,665	9,383,105
Number of Shares Underlying Outstanding Options exercisable | shares	5,602,588
Number of Shares Underlying Outstanding Options, Vested and expected to vest | shares	16,154,665
Weighted-Average Exercise Price, Outstanding beginning | $ / shares	$ 10.64
Weighted-Average Exercise Price, Options granted | $ / shares	2.53
Weighted-Average Exercise Price, Options exercised | $ / shares	2.12
Weighted-Average Exercise Price, Options forfeited or cancelled | $ / shares	8.55
Weighted-Average Exercise Price, Outstanding ending | $ / shares	7.14	$ 10.64
Weighted-Average Exercise Price, Options exercisable | $ / shares	11.95
Weighted-Average Exercise Price, Vested and expected to vest | $ / shares	$ 7.14
Weighted-Average Remaining Contract Term, Outstanding	8 years 7 months 6 days	8 years 2 months 12 days
Weighted-Average Remaining Contract Term, Options exercisable	7 years 4 months 24 days
Weighted-Average Remaining Contract Term, Vested and expected to vest	8 years 7 months 6 days
Aggregate Intrinsic Value, Outstanding | $	$ 0	$ 45
Aggregate Intrinsic Value, Options exercisable | $	0
Aggregate Intrinsic Value, Vested and expected to vest | $	$ 0