diff --git a/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/index.ts b/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/index.ts
index 36a5773245..619869bf9d 100644
--- a/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/index.ts
+++ b/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/index.ts
@@ -18,14 +18,22 @@ export async function apiRequest(
 	endpoint: string,
 	parameters?: RequestParameters,
 ) {
-	const { body, qs, uri, option, headers } = parameters ?? {};
+	const { body, qs, option, headers } = parameters ?? {};
+
+	const credentials = await this.getCredentials('openAiApi');
+
+	let uri = `https://api.openai.com/v1${endpoint}`;
+
+	if (credentials.url) {
+		uri = `${credentials?.url}${endpoint}`;
+	}
 
 	const options = {
 		headers,
 		method,
 		body,
 		qs,
-		uri: uri ?? `https://api.openai.com/v1${endpoint}`,
+		uri,
 		json: true,
 	};
 
diff --git a/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/test/transport.test.ts b/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/test/transport.test.ts
new file mode 100644
index 0000000000..399dad8562
--- /dev/null
+++ b/packages/@n8n/nodes-langchain/nodes/vendors/OpenAi/transport/test/transport.test.ts
@@ -0,0 +1,62 @@
+import type { IExecuteFunctions } from 'n8n-workflow';
+
+import { apiRequest } from '../index';
+
+const mockedExecutionContext = {
+	getCredentials: jest.fn(),
+	helpers: {
+		requestWithAuthentication: jest.fn(),
+	},
+};
+
+describe('apiRequest', () => {
+	beforeEach(() => {
+		jest.resetAllMocks();
+	});
+
+	it('should call requestWithAuthentication with credentials URL if one is provided', async () => {
+		mockedExecutionContext.getCredentials.mockResolvedValue({
+			url: 'http://www.test/url/v1',
+		});
+
+		// Act
+		await apiRequest.call(mockedExecutionContext as unknown as IExecuteFunctions, 'GET', '/test', {
+			headers: { 'Content-Type': 'application/json' },
+		});
+
+		// Assert
+
+		expect(mockedExecutionContext.getCredentials).toHaveBeenCalledWith('openAiApi');
+		expect(mockedExecutionContext.helpers.requestWithAuthentication).toHaveBeenCalledWith(
+			'openAiApi',
+			{
+				headers: { 'Content-Type': 'application/json' },
+				method: 'GET',
+				uri: 'http://www.test/url/v1/test',
+				json: true,
+			},
+		);
+	});
+
+	it('should call requestWithAuthentication with default URL if credentials URL is not provided', async () => {
+		mockedExecutionContext.getCredentials.mockResolvedValue({});
+
+		// Act
+		await apiRequest.call(mockedExecutionContext as unknown as IExecuteFunctions, 'GET', '/test', {
+			headers: { 'Content-Type': 'application/json' },
+		});
+
+		// Assert
+
+		expect(mockedExecutionContext.getCredentials).toHaveBeenCalledWith('openAiApi');
+		expect(mockedExecutionContext.helpers.requestWithAuthentication).toHaveBeenCalledWith(
+			'openAiApi',
+			{
+				headers: { 'Content-Type': 'application/json' },
+				method: 'GET',
+				uri: 'https://api.openai.com/v1/test',
+				json: true,
+			},
+		);
+	});
+});