Supplemental Financial Statement Information - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022	Jan. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 10,927		$ 10,927		$ 9,789
Less: Accumulated depreciation		(7,237)		(7,237)		(3,992)
Property and equipment, net	[1]	3,690		3,690		5,797
Depreciation expense		1,100	$ 900	3,300	$ 2,200
Computer and office equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross		9,790		9,790		8,581
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross		$ 1,137		$ 1,137		$ 1,208

[1] (1) As of October 31, 2023 and January 31, 2023, the condensed consolidated balance sheet includes assets of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $48.6 million and $62.8 million, respectively, and liabilities of $5.9 million and $8.9 million, respectively. The assets of JiHu can be used only to settle obligations of JiHu and creditors of JiHu do not have recourse against the general credit of the Company. Refer to “Note 12. Joint Venture and Equity Method Investment” for further discussion.