Redeemable Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	Jan. 31, 2026	Dec. 14, 2025	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)	0		85,490,483
Redeemable convertible preferred stock, shares issued (in shares)	0		69,914,359
Redeemable convertible preferred stock, shares outstanding (in shares)	0		69,914,359	69,914,359	69,914,359
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value	$ 0	$ 227,200	$ 227,198	$ 227,198	$ 227,198
Redeemable convertible preferred stock, liquidation preference	$ 0		$ 229,543
Series A Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			1,350,000
Redeemable convertible preferred stock, shares issued (in shares)			1,350,000
Redeemable convertible preferred stock, shares outstanding (in shares)			1,350,000
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 0.11
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.0089
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 148
Redeemable convertible preferred stock, liquidation preference			$ 149
Series B Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			7,658,874
Redeemable convertible preferred stock, shares issued (in shares)			7,658,868
Redeemable convertible preferred stock, shares outstanding (in shares)			7,658,868
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 0.39
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.0310
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 2,951
Redeemable convertible preferred stock, liquidation preference			$ 2,987
Series C Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			6,169,302
Redeemable convertible preferred stock, shares issued (in shares)			5,952,858
Redeemable convertible preferred stock, shares outstanding (in shares)			5,952,858
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 1.27
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.1016
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 7,529
Redeemable convertible preferred stock, liquidation preference			$ 7,560
Series D Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			14,431,860
Redeemable convertible preferred stock, shares issued (in shares)			14,431,844
Redeemable convertible preferred stock, shares outstanding (in shares)			14,431,844
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 1.36
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.1086
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 19,482
Redeemable convertible preferred stock, liquidation preference			$ 19,627
Series E Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			8,780,133
Redeemable convertible preferred stock, shares issued (in shares)			8,780,133
Redeemable convertible preferred stock, shares outstanding (in shares)			8,780,133
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 3.99
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.3190
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 34,913
Redeemable convertible preferred stock, liquidation preference			$ 35,033
Series F Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			7,938,238
Redeemable convertible preferred stock, shares issued (in shares)			7,816,435
Redeemable convertible preferred stock, shares outstanding (in shares)			7,816,435
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 8.21
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.6568
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 64,087
Redeemable convertible preferred stock, liquidation preference			$ 64,173
Series G Preferred Stock
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			19,516,000
Redeemable convertible preferred stock, shares issued (in shares)			18,889,279
Redeemable convertible preferred stock, shares outstanding (in shares)			18,889,279
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 3.97
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.3178
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 72,132
Redeemable convertible preferred stock, liquidation preference			$ 74,990
Redeemable Convertible Preferred Stock Series G-1
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			5,034,942
Redeemable convertible preferred stock, shares issued (in shares)			5,034,942
Redeemable convertible preferred stock, shares outstanding (in shares)			5,034,942
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 4.97
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.3973
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 25,956
Redeemable convertible preferred stock, liquidation preference			$ 25,024
Redeemable Convertible Preferred Stock Series H-1
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			7,305,567
Redeemable convertible preferred stock, shares issued (in shares)			0
Redeemable convertible preferred stock, shares outstanding (in shares)			0
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 9.54
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.7633
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 0
Redeemable convertible preferred stock, liquidation preference			$ 0
Redeemable Convertible Preferred Stock Series H-2
Temporary Equity [Line Items]
Redeemable convertible preferred stock, shares authorized (in shares)			7,305,567
Redeemable convertible preferred stock, shares issued (in shares)			0
Redeemable convertible preferred stock, shares outstanding (in shares)			0
Redeemable convertible preferred stock, share issuance price (in dollars per share)			$ 9.54
Redeemable convertible preferred stock, dividend per share (in dollars per share)			$ 0.7633
Redeemable convertible preferred stock, liquidation preference, Net Carrying Value			$ 0
Redeemable convertible preferred stock, liquidation preference			$ 0