diff --git a/examples/browser_rag.py b/examples/browser_rag.py
index 6003bd1..8e9f9bb 100644
--- a/examples/browser_rag.py
+++ b/examples/browser_rag.py
@@ -18,6 +18,11 @@ class BrowserRAG(BaseRAGExample):
     """RAG example for Chrome browser history."""
 
     def __init__(self):
+        # Set default values BEFORE calling super().__init__
+        self.embedding_model_default = (
+            "sentence-transformers/all-MiniLM-L6-v2"  # Fast 384-dim model
+        )
+
         super().__init__(
             name="Browser History",
             description="Process and query Chrome browser history with LEANN",
diff --git a/examples/email_rag.py b/examples/email_rag.py
index 36fdc3f..b3c5483 100644
--- a/examples/email_rag.py
+++ b/examples/email_rag.py
@@ -17,6 +17,11 @@ class EmailRAG(BaseRAGExample):
     """RAG example for Apple Mail processing."""
 
     def __init__(self):
+        # Set default values BEFORE calling super().__init__
+        self.embedding_model_default = (
+            "sentence-transformers/all-MiniLM-L6-v2"  # Fast 384-dim model
+        )
+
         super().__init__(
             name="Email",
             description="Process and query Apple Mail emails with LEANN",
diff --git a/examples/wechat_rag.py b/examples/wechat_rag.py
index aa8b987..a071f89 100644
--- a/examples/wechat_rag.py
+++ b/examples/wechat_rag.py
@@ -20,7 +20,9 @@ class WeChatRAG(BaseRAGExample):
     def __init__(self):
         # Set default values BEFORE calling super().__init__
         self.max_items_default = 50  # Match original default
-        self.embedding_model_default = "Qwen/Qwen3-Embedding-0.6B"  # Match original default
+        self.embedding_model_default = (
+            "sentence-transformers/all-MiniLM-L6-v2"  # Fast 384-dim model
+        )
 
         super().__init__(
             name="WeChat History",