Joint Venture and Equity Method Investment - Schedule of Inter-Company Eliminations (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Oct. 31, 2022		Oct. 31, 2021	Oct. 31, 2022		Oct. 31, 2021	Jan. 31, 2022
Noncontrolling Interest [Line Items]
Revenue		$ 112,981		$ 66,800	$ 301,429		$ 174,857
Cost of revenue		14,564		7,195	37,442		20,812
Gross profit		98,417		59,605	263,987		154,045
Sales and marketing		81,080		50,543	228,479		133,562
Research and development		41,113		24,664	112,463		68,607
General and administrative		33,186		16,939	88,182		40,276
Total operating expenses		155,379		92,146	429,124		242,445
Loss from operations		(56,962)		(32,541)	(165,137)		(88,400)
Interest income		4,657		127	8,247		226
Total other income (expense), net		2,661		(10,209)	22,609		(21,252)
Net loss		(50,465)		(41,748)	(138,575)		(110,796)
Net loss attributable to noncontrolling interest		(2,010)		(521)	(4,997)		(1,443)
Cash and cash equivalents		372,169	[1]	824,714	372,169	[1]	824,714	$ 884,672	[1]
Property and equipment, net	[1]	5,560			5,560			3,271
Total assets	[1]	1,120,241			1,120,241			1,091,438
Total liabilities	[1]	305,550			305,550			292,169
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue		1,275		265	3,388		297
Cost of revenue		481		243	1,193		604
Gross profit		794		22	2,195		(307)
Sales and marketing		1,999		780	5,251		1,630
Research and development		1,898		499	4,735		1,376
General and administrative		3,070		621	7,363		1,984
Total operating expenses		6,967		1,900	17,349		4,990
Loss from operations		(6,173)		(1,878)	(15,154)		(5,297)
Interest income		193		0	403		0
Total other income (expense), net		1,452		7	2,464		8
Net loss before income taxes		(4,528)		(1,871)	(12,287)		(5,289)
Net loss		(4,528)		(1,871)	(12,287)		(5,289)
Net loss attributable to noncontrolling interest		(2,010)		$ (521)	(4,997)		$ (1,443)
Cash and cash equivalents		55,573			55,573			14,198
Property and equipment, net		964			964			769
Other assets		2,965			2,965			2,765
Total assets		59,502			59,502			17,732
Total liabilities		$ 4,527			$ 4,527			$ 3,663

[1] (1) As of October 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 $59.5 million and $17.7 million, respectively, and liabilities of $4.5 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.