diff --git a/packages/stage-ui/src/stores/providers.ts b/packages/stage-ui/src/stores/providers.ts
index d77ffd79d..6a26f942e 100644
--- a/packages/stage-ui/src/stores/providers.ts
+++ b/packages/stage-ui/src/stores/providers.ts
@@ -1129,13 +1129,14 @@ export const useProvidersStore = defineStore('providers', () => {
       iconColor: 'i-lobe-icons:bilibiliindex',
       defaultOptions: () => ({
         baseUrl: 'http://localhost:11996/tts/',
+        model: 'IndexTTS-1.5',
       }),
       createProvider: async (config) => {
         const provider: SpeechProvider = {
           speech: () => {
             const req = {
               baseURL: config.baseUrl as string,
-              model: 'IndexTTS-1.5',
+              model: (config.model as string) || 'IndexTTS-1.5',
             }
             return req
           },
@@ -1143,6 +1144,18 @@ export const useProvidersStore = defineStore('providers', () => {
         return provider
       },
       capabilities: {
+        listModels: async () => {
+          return [
+            {
+              id: 'IndexTTS-1.5',
+              name: 'IndexTTS-1.5',
+              provider: 'index-tts-vllm',
+              description: 'Default model for Index-TTS vLLM deployment',
+              contextLength: 0,
+              deprecated: false,
+            },
+          ]
+        },
         listVoices: async (config) => {
           const voicesUrl = config.baseUrl as string
           const response = await fetch(`${voicesUrl}audio/voices`)