Joint Venture and Equity Method Investment - Schedule of Intercompany Eliminations (Details) - USD ($)		3 Months Ended
		Apr. 30, 2024		Apr. 30, 2023	Jan. 31, 2024
Noncontrolling Interest [Line Items]
Revenue		$ 169,187,000		$ 126,878,000
Cost of revenue		18,776,000		13,939,000
Gross profit		150,411,000		112,939,000
Sales and marketing		92,424,000		86,537,000
Total operating expenses		204,051,000		171,172,000
Loss from operations		(53,640,000)		(58,233,000)
Interest income		12,030,000		7,315,000
Total other income (expense), net		(567,000)		253,000
Net loss		(54,887,000)		(52,899,000)
Net loss attributable to noncontrolling interest		(243,000)		(430,000)
Cash and cash equivalents		420,322,000	[1]	315,933,000	$ 287,996,000	[1]
Property and equipment, net	[1]	2,820,000			2,954,000
Operating lease right-of-use assets		543,000	[1]		405,000
TOTAL ASSETS	[1]	1,321,627,000			1,317,861,000
Total liabilities	[1]	707,269,000			699,927,000
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue		1,646,000		1,464,000
Cost of revenue		484,000		491,000
Gross profit		1,162,000		973,000
Sales and marketing		1,635,000		2,084,000
Research and development		(211,000)		1,956,000
General and administrative		838,000		(1,444,000)
Total operating expenses		2,262,000		2,596,000
Loss from operations		(1,100,000)		(1,623,000)
Interest income		227,000		315,000
Total other income (expense), net		347,000		269,000
Net loss before income taxes		(526,000)		(1,039,000)
Net loss		(526,000)		(1,039,000)
Net loss attributable to noncontrolling interest		(243,000)		$ (430,000)
Cash and cash equivalents		41,901,000			43,896,000
Property and equipment, net		357,000			489,000
Operating lease right-of-use assets		543,000			405,000
Other assets		3,884,000			2,835,000
TOTAL ASSETS		46,685,000			47,625,000
Total liabilities		$ 6,071,000			$ 6,080,000

[1] (1) As of April 30, 2024 and January 31, 2024, the condensed consolidated balance sheet includes assets of the consolidated variable interest entity, GitLab Information Technology (Hubei) Co., LTD (“JiHu”), of $46.7 million and $47.6 million, respectively, and liabilities of $6.1 million and $6.1 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.