diff --git a/OpenAIKit.podspec b/OpenAIKit.podspec
index 36c4fe7..d670dbe 100644
--- a/OpenAIKit.podspec
+++ b/OpenAIKit.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'OpenAIKit'
-  s.version          = '1.5.0'
+  s.version          = '1.6.0'
   s.summary          = 'OpenAI is a community-maintained repository containing Swift implementation over OpenAI public API.'
 
   s.description      = <<-DESC
diff --git a/Sources/OpenAIKit/Helpers/NetworkRoutes.swift b/Sources/OpenAIKit/Helpers/NetworkRoutes.swift
index 3605a9e..50b0852 100644
--- a/Sources/OpenAIKit/Helpers/NetworkRoutes.swift
+++ b/Sources/OpenAIKit/Helpers/NetworkRoutes.swift
@@ -21,11 +21,12 @@ enum OpenAIHTTPMethod: String {
 
 typealias OpenAIHeaders = [String: String]
 
+@available(swift 5.5)
+@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
 protocol Endpoint {
 	var route: String { get }
 	var method: OpenAIHTTPMethod { get }
-	var baseURL: String { get }
-	var urlPath: String { get }
+	func urlPath(for aiKit: OpenAIKit) -> String
 }
 
 enum OpenAIEndpoint {
@@ -33,9 +34,11 @@ enum OpenAIEndpoint {
 	case chatCompletions
 	case edits
 	case dalleImage
-    case dalleImageEdit
+	case dalleImageEdit
 }
 
+@available(swift 5.5)
+@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, *)
 extension OpenAIEndpoint: Endpoint {
 	var route: String {
 		switch self {
@@ -47,8 +50,8 @@ extension OpenAIEndpoint: Endpoint {
 			return "/v1/edits"
 		case .dalleImage:
 			return "/v1/images/generations"
-        case .dalleImageEdit:
-            return "/v1/images/edits"
+		case .dalleImageEdit:
+			return "/v1/images/edits"
 		}
 	}
 
@@ -59,14 +62,14 @@ extension OpenAIEndpoint: Endpoint {
 		}
 	}
 
-	var baseURL: String {
+	private var baseURL: String {
 		switch self {
 		default:
 			return "https://api.openai.com"
 		}
 	}
 
-	var urlPath: String {
-		baseURL + route
+	func urlPath(for aiKit: OpenAIKit) -> String {
+		(aiKit.customOpenAIURL ?? baseURL) + route
 	}
 }
diff --git a/Sources/OpenAIKit/OpenAIKit.swift b/Sources/OpenAIKit/OpenAIKit.swift
index 1f41c53..425b9ee 100644
--- a/Sources/OpenAIKit/OpenAIKit.swift
+++ b/Sources/OpenAIKit/OpenAIKit.swift
@@ -17,10 +17,13 @@ public final class OpenAIKit {
 	
 	internal let jsonEncoder = JSONEncoder.aiEncoder
 	
+	public let customOpenAIURL: String?
+	
 	/// Initialize `OpenAIKit` with your API Token wherever convenient in your project. Organization name is optional.
-	public init(apiToken: String, organization: String? = nil, timeoutInterval: TimeInterval = 60) {
+	public init(apiToken: String, organization: String? = nil, timeoutInterval: TimeInterval = 60, customOpenAIURL: String? = nil) {
 		self.apiToken = apiToken
 		self.organization = organization
+		self.customOpenAIURL = customOpenAIURL
 		
 		let configuration = URLSessionConfiguration.default
 		configuration.timeoutIntervalForRequest = timeoutInterval
@@ -49,17 +52,17 @@ extension OpenAIKit {
 		return headers
 	}
     
-    var baseMultipartHeaders: OpenAIHeaders {
-        var headers: OpenAIHeaders = [:]
+	var baseMultipartHeaders: OpenAIHeaders {
+		var headers: OpenAIHeaders = [:]
         
-        headers["Authorization"] = "Bearer \(apiToken)"
+		headers["Authorization"] = "Bearer \(apiToken)"
         
-        if let organization {
-            headers["OpenAI-Organization"] = organization
-        }
+		if let organization {
+			headers["OpenAI-Organization"] = organization
+		}
         
-        headers["content-type"] = "multipart/form-data"
+		headers["content-type"] = "multipart/form-data"
         
-        return headers
-    }
+		return headers
+	}
 }
diff --git a/Sources/OpenAIKit/OpenAIKitRequests/Chat.swift b/Sources/OpenAIKit/OpenAIKitRequests/Chat.swift
index 07291c9..257f13f 100644
--- a/Sources/OpenAIKit/OpenAIKitRequests/Chat.swift
+++ b/Sources/OpenAIKit/OpenAIKitRequests/Chat.swift
@@ -51,7 +51,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.request(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers, completion: completion)
+		network.request(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers, completion: completion)
 	}
 
 	@available(swift 5.5)
@@ -122,7 +122,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.requestStream(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers) { (result: Result<AIStreamResponse<AIResponseModel>, Error>) in
+		network.requestStream(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers) { (result: Result<AIStreamResponse<AIResponseModel>, Error>) in
 			completion(result)
 		}
 	}
@@ -153,6 +153,6 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		return try await network.requestStream(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers)
+		return try await network.requestStream(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers)
 	}
 }
diff --git a/Sources/OpenAIKit/OpenAIKitRequests/Completions.swift b/Sources/OpenAIKit/OpenAIKitRequests/Completions.swift
index 28175a7..6b0a9fa 100644
--- a/Sources/OpenAIKit/OpenAIKitRequests/Completions.swift
+++ b/Sources/OpenAIKit/OpenAIKitRequests/Completions.swift
@@ -45,7 +45,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.request(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers, completion: completion)
+		network.request(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers, completion: completion)
 	}
 
 	@available(swift 5.5)
@@ -110,7 +110,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.requestStream(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers) { (result: Result<AIStreamResponse<AIResponseModel>, Error>) in
+		network.requestStream(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers) { (result: Result<AIStreamResponse<AIResponseModel>, Error>) in
 			completion(result)
 		}
 	}
@@ -137,6 +137,6 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		return try await network.requestStream(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers)
+		return try await network.requestStream(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers)
 	}
 }
diff --git a/Sources/OpenAIKit/OpenAIKitRequests/Edits.swift b/Sources/OpenAIKit/OpenAIKitRequests/Edits.swift
index fa3aad7..97344b2 100644
--- a/Sources/OpenAIKit/OpenAIKitRequests/Edits.swift
+++ b/Sources/OpenAIKit/OpenAIKitRequests/Edits.swift
@@ -35,7 +35,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.request(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers, completion: completion)
+		network.request(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers, completion: completion)
 	}
 
 	@available(swift 5.5)
diff --git a/Sources/OpenAIKit/OpenAIKitRequests/Images.swift b/Sources/OpenAIKit/OpenAIKitRequests/Images.swift
index 73ecc7a..9c62d49 100644
--- a/Sources/OpenAIKit/OpenAIKitRequests/Images.swift
+++ b/Sources/OpenAIKit/OpenAIKitRequests/Images.swift
@@ -32,7 +32,7 @@ public extension OpenAIKit {
 
 		let headers = baseHeaders
 
-		network.request(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers, completion: completion)
+		network.request(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers, completion: completion)
 	}
 
 	@available(swift 5.5)
@@ -77,7 +77,7 @@ public extension OpenAIKit {
         
         let headers = baseMultipartHeaders
         
-        network.request(endpoint.method, url: endpoint.urlPath, body: requestData, headers: headers, completion: completion)
+        network.request(endpoint.method, url: endpoint.urlPath(for: self), body: requestData, headers: headers, completion: completion)
     }
     
     @available(swift 5.5)