Equity Incentive Plan - Valuation Assumptions (Details) - Stock options issued and outstanding	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected volatility, minimum	56.40%	58.75%	56.40%	58.75%
Expected volatility, maximum	56.68%	59.27%	58.49%	60.19%
Risk-free interest rate, minimum	3.79%	3.86%	3.79%	3.86%
Risk-free interest rate, maximum	3.97%	3.88%	4.07%	4.60%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected term (in years)	6 years 7 days	5 years 5 months 26 days	5 years 2 months 23 days	5 years 4 months 28 days
Maximum
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Expected term (in years)	6 years 29 days	6 years 7 days	6 years 29 days	6 years 21 days