Basic and Diluted Net Loss per Share - Antidilutive Securities (Details) - shares	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	6,597,257	5,416,348	5,433,071
2028 Convertible Notes (on an as-converted basis)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	47,208	1,303,124	1,250,000
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	118,756	135,296	569,838
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	2,195,297	1,830,854	1,420,806
Unvested early exercised common stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	0	0	33
2025 Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	1,671,000	0	0
Legacy Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	1,724,961	1,724,961	1,724,961
Employee stock purchase plan
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total potentially dilutive common share equivalents (in shares)	840,035	422,113	467,433