Joint Venture and Equity Method Investment - Schedule of Inter-Company Eliminations (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 31, 2022		Jul. 31, 2021	Jul. 31, 2022		Jul. 31, 2021	Jan. 31, 2022
Noncontrolling Interest [Line Items]
Revenue	$ 101,041		$ 58,127	$ 188,448		$ 108,057
Cost of revenue	13,030		7,192	22,878		13,617
Gross profit	88,011		50,935	165,570		94,440
Sales and marketing	80,689		44,165	147,399		83,019
Research and development	39,520		22,603	71,350		43,943
General and administrative	33,104		13,998	54,996		23,337
Total operating expenses	153,313		80,766	273,745		150,299
Loss from operations	(65,302)		(29,831)	(108,175)		(55,859)
Interest income	3,064		45	3,590		99
Total other income (expense), net	1,500		(9,991)	19,948		(11,043)
Net loss	(61,497)		(40,766)	(88,110)		(69,048)
Net loss attributable to noncontrolling interest	(2,473)		(577)	(2,987)		(922)
Cash and cash equivalents	410,757	[1]	226,254	410,757	[1]	226,254	$ 884,672
Property and equipment, net	5,459	[1]		5,459	[1]		3,271
Total assets	1,115,419	[1]		1,115,419	[1]		1,091,438
Total liabilities	285,099	[1]		285,099	[1]		292,169
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue	1,020		32	2,113		32
Cost of revenue	413		274	712		361
Gross profit	607		(242)	1,401		(329)
Sales and marketing	1,865		705	3,252		850
Research and development	1,909		333	2,837		661
General and administrative	3,539		945	4,293		1,579
Total operating expenses	7,313		1,983	10,382		3,090
Loss from operations	(6,706)		(2,225)	(8,981)		(3,419)
Interest income	142		0	210		0
Total other income (expense), net	339		49	1,012		1
Net loss before income taxes	(6,225)		(2,176)	(7,759)		(3,418)
Net loss	(6,225)		(2,176)	(7,759)		(3,418)
Net loss attributable to noncontrolling interest	(2,473)		$ (577)	(2,987)		$ (922)
Cash and cash equivalents	58,323			58,323			14,198
Property and equipment, net	845			845			769
Other assets	1,777			1,777			2,765
Total assets	60,945			60,945			17,732
Total liabilities	$ 3,589			$ 3,589			$ 3,663

[1] (1) As of July 31, 2022 and January 31, 2022, the condensed consolidated balance sheet includes assets of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $60.9 million and $17.7 million, respectively, and liabilities of $3.6 million and $3.7 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 11. Joint Venture and Equity Method Investment” for further discussion.