Stock-Based Compensation - Additional Information (Details) - USD ($)			1 Months Ended	3 Months Ended		19 Months Ended
	Feb. 23, 2023	Mar. 11, 2020	Jun. 30, 2019	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2020	Dec. 31, 2023	Jul. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance				9,983,845			7,873,027
Stock issued during period, value, new issues					$ 159,544,000
Total compensation cost not yet recognized related to unvested stock options				$ 53,100,000
Expected to be recognized over a weighted-average period				3 years
Restricted Stock Awards | Enliven Inc.
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Granted			3,000,000
Restricted Stock Awards | Employees and Consultants | Enliven Inc.
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock shares issued						197,262
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total compensation cost not yet recognized related to unvested stock options				$ 1,300,000
Expected to be recognized over a weighted-average period				3 years 6 months
Number of Shares, Granted				20,000
2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance								0
2016 Stock Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance		0
2020 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance				1,322,398
Award expiration period from date of grant	10 years
Award vesting period	4 years
Number of shares of common stock that may be issued accordance with plan	4,275,000
Description of changes in the number of shares reserved for issuance				The number of shares reserved shall be annually increased on the first day of each fiscal year, beginning with the fiscal year commencing on January 1, 2024 and continuing until, and including, the fiscal year commencing January 1, 2032, equal to the least of (i) 4.5% of the number of shares of the Company’s common stock outstanding on the first day of such fiscal year and (ii) an amount determined by the Company’s board of directors.
Common stock outstanding percent	4.50%
2020 ESPP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance				809,890
Exercise price per share of stock options as percentage of fair market value of common stock		85.00%
Number of shares of common stock that may be issued accordance with plan	407,133
Common stock outstanding percent	1.00%
Stock issued during period, value, new issues				$ 0	$ 0
Share based compensation liability				216,000			$ 53,000
Total compensation cost not yet recognized related to unvested stock options				$ 100,000
Expected to be recognized over a weighted-average period				2 months 12 days