Stockholders’ Deficit - Schedule of Reserved Shares of Common Stock (Details) - shares shares in Thousands	Jan. 31, 2025	Jan. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	93,618	139,215
Conversion of Preferred Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)		74,183
Conversion of Founders Stock
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)		5,400
2014 Stock Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	0	6,255
2024 Stock Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	57,591	0
2024 Employee Stock Purchase Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	4,201	0
Employee stock option | 2014 Stock Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	9,570	3,185
Restricted stock units | 2014 Stock Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	18,039	50,192
Restricted stock units | 2024 Stock Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Common stock reserved (in shares)	4,217	0