Joint Venture and Equity Method Investment - Schedule of Intercompany Eliminations (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 31, 2024		Jan. 31, 2023		Jan. 31, 2022
Noncontrolling Interest [Line Items]
Revenue		$ 579,906		$ 424,336		$ 252,653
Cost of revenue		59,708		51,680		29,985
Gross profit		520,198		372,656		222,668
Sales and marketing		356,393		309,992		190,754
Research and development		200,840		156,143		97,217
Total operating expenses		707,638		584,067		351,625
Loss from operations		(187,440)		(211,411)		(128,957)
Interest income		39,114		14,496		736
Total other income (expense), net		(11,826)		21,585		(30,850)
Benefit from income taxes		264,057		2,898		(1,511)
Net loss		(428,033)		(180,696)		(157,560)
Net loss attributable to noncontrolling interest		(3,859)		(8,385)		(2,422)
Cash and cash equivalents		287,996	[1]	295,402	[1]	884,672
Property and equipment, net	[1]	2,954		5,797
Operating lease right-of-use assets		405	[1]	998
TOTAL ASSETS	[1]	1,317,861		1,169,200
Total liabilities	[1]	699,927		344,475
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue		6,451		4,743		1,237
Cost of revenue		2,414		1,731		945
Gross profit		4,037		3,012		292
Sales and marketing		7,369		7,670		3,200
Research and development		5,338		6,818		2,299
General and administrative		1,864		10,515		3,589
Total operating expenses		14,571		25,003		9,088
Loss from operations		(10,534)		(21,991)		(8,796)
Interest income		1,078		659		0
Total other income (expense), net		858		1,633		67
Net loss before income taxes		(8,598)		(19,699)		(8,729)
Benefit from income taxes		(16)		0		0
Net loss		(8,614)		(19,699)		(8,729)
Net loss attributable to noncontrolling interest		(3,859)		(8,385)		$ (2,422)
Cash and cash equivalents		43,896		56,744
Property and equipment, net		489		1,135
Operating lease right-of-use assets		405		998
Other assets		2,835		3,950
TOTAL ASSETS		47,625		62,827
Total liabilities		$ 6,080		$ 8,871

[1] (1) As of January 31, 2024 and January 31, 2023, the consolidated balance sheet includes assets of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $47.6 million and $62.8 million, respectively, and liabilities of $6.1 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.