diff --git a/app/store/access.ts b/app/store/access.ts
index a1014610e39..7f8067161e3 100644
--- a/app/store/access.ts
+++ b/app/store/access.ts
@@ -204,8 +204,8 @@ export const useAccessStore = createPersistStore(
         .then((res) => {
           // Set default model from env request
           let defaultModel = res.defaultModel ?? "";
-          DEFAULT_CONFIG.modelConfig.model =
-            defaultModel !== "" ? defaultModel : "gpt-3.5-turbo";
+          if (defaultModel !== "")
+            DEFAULT_CONFIG.modelConfig.model = defaultModel;
           return res;
         })
         .then((res: DangerConfig) => {
diff --git a/app/store/config.ts b/app/store/config.ts
index 9985b9e768c..679135ee712 100644
--- a/app/store/config.ts
+++ b/app/store/config.ts
@@ -143,6 +143,21 @@ export const useAppConfig = createPersistStore(
   {
     name: StoreKey.Config,
     version: 4,
+
+    merge(persistedState, currentState) {
+      const state = persistedState as ChatConfig | undefined;
+      if (!state) return { ...currentState };
+      const models = currentState.models.slice();
+      state.models.forEach((pModel) => {
+        const idx = models.findIndex(
+          (v) => v.name === pModel.name && v.provider === pModel.provider,
+        );
+        if (idx !== -1) models[idx] = pModel;
+        else models.push(pModel);
+      });
+      return { ...currentState, ...state, models: models };
+    },
+
     migrate(persistedState, version) {
       const state = persistedState as ChatConfig;