Stock-Based Compensation - Summary of Weighted-average Assumptions Used in Determination of Fair Value of Service-Based Stock Options (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Volatility, minimum	89.54%	82.57%	83.72%	72.61%
Volatility, maximum	90.15%	83.59%	90.15%	83.59%
Risk-free interest rate, minimum	3.70%	3.48%	3.70%	3.48%
Risk-free interest rate, maximum	4.16%	4.15%	4.50%	4.65%
Dividend yield	0.00%	0.00%	0.00%	0.00%
2019 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 months	6 months	6 months	6 months
Volatility	92.85%	61.35%	92.85%	61.35%
Risk-free interest rate	4.22%	5.43%	4.22%	5.43%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Fair value	$ 1.59	$ 0.51	$ 1.59	$ 0.51
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 years 7 days	5 years 9 months 7 days	5 years 6 months	5 years 6 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected term (in years)	6 years 29 days	6 years 29 days	6 years 29 days	6 years 29 days