Equity Incentive Plans - Assumptions Used to Calculate the Grant-date Fair Value (Details) - ESPP	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield (as a percent)	0.00%	0.00%	0.00%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility (as a percent)	51.00%	45.00%	74.00%
Expected term	6 months	6 months	6 months
Risk-free interest rate (as a percent)	3.62%	3.96%	4.60%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility (as a percent)	80.00%	65.00%	93.00%
Expected term	1 year	1 year	1 year
Risk-free interest rate (as a percent)	4.23%	5.36%	5.58%