diff --git a/js/mzta-special-commands.js b/js/mzta-special-commands.js
index 9688a9f7..25e9d508 100644
--- a/js/mzta-special-commands.js
+++ b/js/mzta-special-commands.js
@@ -26,6 +26,7 @@
     prompt = "";
     worker = null;
     llm = "";
+    custom_model = "";
     full_message = "";
     logger = null;
     do_debug = false;
@@ -34,10 +35,12 @@
         let {
             prompt = '',
             llm = '',
+            custom_model = '',
             do_debug = false
         } = args;
         this.prompt = prompt;
         this.llm = llm;
+        this.custom_model = custom_model;
         this.logger = new taLogger('mzta_specialCommand', do_debug);
         this.do_debug = do_debug;
         switch (this.llm) {
@@ -73,7 +76,7 @@
                 this.worker.postMessage({
                     type: 'init',
                     chatgpt_api_key: prefs_api.chatgpt_api_key,
-                    chatgpt_model: prefs_api.chatgpt_model,
+                    chatgpt_model: this.custom_model != '' ? this.custom_model : prefs_api.chatgpt_model,
                     chatgpt_developer_messages: prefs_api.chatgpt_developer_messages,
                     do_debug: this.do_debug,
                     i18nStrings: ''
@@ -89,7 +92,7 @@
                 this.worker.postMessage({
                     type: 'init',
                     google_gemini_api_key: prefs_api.google_gemini_api_key,
-                    google_gemini_model: prefs_api.google_gemini_model,
+                    google_gemini_model: this.custom_model != '' ? this.custom_model : prefs_api.google_gemini_model,
                     google_gemini_system_instruction: prefs_api.google_gemini_system_instruction,
                     do_debug: this.do_debug,
                     i18nStrings: ''
@@ -104,7 +107,7 @@
                 this.worker.postMessage({
                     type: 'init',
                     ollama_host: prefs_api.ollama_host,
-                    ollama_model: prefs_api.ollama_model,
+                    ollama_model: this.custom_model != '' ? this.custom_model : prefs_api.ollama_model,
                     do_debug: this.do_debug,
                     i18nStrings: ''
                 });
@@ -121,7 +124,7 @@
                 this.worker.postMessage({
                     type: 'init',
                     openai_comp_host: prefs_api.openai_comp_host,
-                    openai_comp_model: prefs_api.openai_comp_model,
+                    openai_comp_model: this.custom_model != '' ? this.custom_model : prefs_api.openai_comp_model,
                     openai_comp_api_key: prefs_api.openai_comp_api_key,
                     openai_comp_use_v1: prefs_api.openai_comp_use_v1,
                     do_debug: this.do_debug,
@@ -139,7 +142,7 @@
                 this.worker.postMessage({
                     type: 'init',
                     anthropic_api_key: prefs_api.anthropic_api_key,
-                    anthropic_model: prefs_api.anthropic_model,
+                    anthropic_model: this.custom_model != '' ? this.custom_model : prefs_api.anthropic_model,
                     anthropic_version: prefs_api.anthropic_version,
                     anthropic_max_tokens: prefs_api.anthropic_max_tokens,
                     do_debug: this.do_debug,