diff --git a/public/script.js b/public/script.js
index 36f93abc7..0da69d741 100644
--- a/public/script.js
+++ b/public/script.js
@@ -79,7 +79,7 @@ import {
 import {
     setOpenAIMessageExamples,
     setOpenAIMessages,
-    setupOpenAIPromptManager,
+    setupChatCompletionPromptManager,
     prepareOpenAIMessages,
     sendOpenAIRequest,
     loadOpenAISettings,
@@ -90,8 +90,6 @@ import {
     openai_messages_count,
     getTokenCountOpenAI,
     chat_completion_sources,
-    setupWindowAiPromptManager,
-    setupClaudePromptManager,
     getTokenizerModel,
     getChatCompletionModel,
 } from "./scripts/openai.js";
@@ -4562,20 +4560,13 @@ function changeMainAPI() {
     }
 
     switch (oai_settings.chat_completion_source) {
-        case chat_completion_sources.OPENAI:
-            setupOpenAIPromptManager(oai_settings);
-            break;
-        case chat_completion_sources.CLAUDE:
-            setupClaudePromptManager(oai_settings);
-            break;
-        case chat_completion_sources.WINDOWAI:
-            setupWindowAiPromptManager(oai_settings);
-            break;
-        case chat_completion_sources.OPENROUTER:
-            setupWindowAiPromptManager(oai_settings);
-            break;
         case chat_completion_sources.SCALE:
-            setupWindowAiPromptManager(oai_settings);
+        case chat_completion_sources.OPENROUTER:
+        case chat_completion_sources.WINDOWAI:
+        case chat_completion_sources.CLAUDE:
+        case chat_completion_sources.OPENAI:
+        default:
+            setupChatCompletionPromptManager(oai_settings);
             break;
     }
 }
diff --git a/public/scripts/openai.js b/public/scripts/openai.js
index 11bcca1bc..a0fc452a6 100644
--- a/public/scripts/openai.js
+++ b/public/scripts/openai.js
@@ -61,9 +61,7 @@ export {
     loadOpenAISettings,
     setOpenAIMessages,
     setOpenAIMessageExamples,
-    setupOpenAIPromptManager,
-    setupClaudePromptManager,
-    setupWindowAiPromptManager,
+    setupChatCompletionPromptManager,
     generateOpenAIPromptCache,
     prepareOpenAIMessages,
     sendOpenAIRequest,
@@ -294,9 +292,15 @@ function setOpenAIMessageExamples(mesExamplesArray) {
     }
 }
 
-function setupOpenAIPromptManager(openAiSettings) {
+/**
+ * One-time setup for prompt manager module.
+ *
+ * @param openAiSettings
+ * @returns {PromptManagerModule|null}
+ */
+function setupChatCompletionPromptManager(openAiSettings) {
     // Do not set up prompt manager more than once
-    if (promptManager) return true;
+    if (promptManager) return promptManager;
 
     promptManager = new PromptManager();
 
@@ -326,14 +330,8 @@ function setupOpenAIPromptManager(openAiSettings) {
 
     promptManager.init(configuration, openAiSettings);
     promptManager.render();
-}
 
-function setupClaudePromptManager(claudeSettings) {
-    setupOpenAIPromptManager(claudeSettings);
-}
-
-function setupWindowAiPromptManager(windowAiSettings) {
-    setupOpenAIPromptManager(windowAiSettings);
+    return promptManager;
 }
 
 function generateOpenAIPromptCache() {