Joint Venture and Equity Method Investment - Schedule of Intercompany Eliminations (Details) - USD ($)		3 Months Ended			9 Months Ended
		Oct. 31, 2023		Oct. 31, 2022	Oct. 31, 2023		Oct. 31, 2022	Jan. 31, 2023
Noncontrolling Interest [Line Items]
Revenue		$ 149,668,000		$ 112,981,000	$ 416,127,000		$ 301,429,000
Cost of revenue		15,084,000		14,564,000	43,719,000		37,442,000
Gross profit		134,584,000		98,417,000	372,408,000		263,987,000
Sales and marketing		86,978,000		81,080,000	265,631,000		228,479,000
Research and development		49,058,000		41,113,000	148,452,000		112,463,000
Total operating expenses		174,851,000		155,379,000	524,965,000		429,124,000
Loss from operations		(40,267,000)		(56,962,000)	(152,557,000)		(165,137,000)
Interest income		10,874,000		4,657,000	27,301,000		8,247,000
Total other income (expense), net		569,000		2,661,000	(508,000)		22,609,000
Net loss		(286,355,000)		(50,465,000)	(390,462,000)		(138,575,000)
Net loss attributable to noncontrolling interest		(1,197,000)		(2,010,000)	(2,755,000)		(4,997,000)
Cash and cash equivalents		285,309,000	[1]	372,169,000	285,309,000	[1]	372,169,000	$ 295,402,000	[1]
Property and equipment, net	[1]	3,690,000			3,690,000			5,797,000
Operating lease right-of-use assets		533,000	[1]		533,000	[1]		998,000
TOTAL ASSETS	[1]	1,226,896,000			1,226,896,000			1,169,200,000
Total liabilities	[1]	633,714,000			633,714,000			344,475,000
Variable Interest Entity, Primary Beneficiary
Noncontrolling Interest [Line Items]
Revenue		1,700,000		1,275,000	4,773,000		3,388,000
Cost of revenue		779,000		481,000	1,830,000		1,193,000
Gross profit		921,000		794,000	2,943,000		2,195,000
Sales and marketing		1,644,000		1,999,000	5,688,000		5,251,000
Research and development		1,463,000		1,898,000	4,146,000		4,735,000
General and administrative		1,003,000		3,070,000	966,000		7,363,000
Total operating expenses		4,110,000		6,967,000	10,800,000		17,349,000
Loss from operations		(3,189,000)		(6,173,000)	(7,857,000)		(15,154,000)
Interest income		262,000		193,000	817,000		403,000
Total other income (expense), net		279,000		1,452,000	841,000		2,464,000
Net loss before income taxes		(2,648,000)		(4,528,000)	(6,199,000)		(12,287,000)
Net loss		(2,648,000)		(4,528,000)	(6,199,000)		(12,287,000)
Net loss attributable to noncontrolling interest		(1,197,000)		$ (2,010,000)	(2,755,000)		$ (4,997,000)
Cash and cash equivalents		44,443,000			44,443,000			56,744,000
Property and equipment, net		655,000			655,000			1,135,000
Operating lease right-of-use assets		533,000			533,000			998,000
Other assets		3,002,000			3,002,000			3,950,000
TOTAL ASSETS		48,633,000			48,633,000			62,827,000
Total liabilities		$ 5,914,000			$ 5,914,000			$ 8,871,000

[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.