diff --git a/mcp_server/.env.example b/mcp_server/.env.example
index 1ba5c099..4457709e 100644
--- a/mcp_server/.env.example
+++ b/mcp_server/.env.example
@@ -9,7 +9,7 @@ NEO4J_PASSWORD=demodemo
 # OpenAI API Configuration
 # Required for LLM operations
 OPENAI_API_KEY=your_openai_api_key_here
-MODEL_NAME=gpt-4o
+MODEL_NAME=gpt-4o-mini
 
 # Optional: Only needed for non-standard OpenAI endpoints
 # OPENAI_BASE_URL=https://api.openai.com/v1
diff --git a/mcp_server/graphiti_mcp_server.py b/mcp_server/graphiti_mcp_server.py
index d20e3522..1b8bfeb0 100644
--- a/mcp_server/graphiti_mcp_server.py
+++ b/mcp_server/graphiti_mcp_server.py
@@ -31,7 +31,7 @@ from graphiti_core.utils.maintenance.graph_data_operations import clear_data
 
 load_dotenv()
 
-DEFAULT_LLM_MODEL = 'gpt-4o'
+DEFAULT_LLM_MODEL = 'gpt-4o-mini'
 
 
 class Requirement(BaseModel):
diff --git a/mcp_server/mcp_config_stdio_example.json b/mcp_server/mcp_config_stdio_example.json
index bb88210b..f6e437bc 100644
--- a/mcp_server/mcp_config_stdio_example.json
+++ b/mcp_server/mcp_config_stdio_example.json
@@ -14,8 +14,8 @@
                 "NEO4J_USER": "neo4j",
                 "NEO4J_PASSWORD": "demodemo",
                 "OPENAI_API_KEY": "${OPENAI_API_KEY}",
-                "MODEL_NAME": "gpt-4o"
+                "MODEL_NAME": "gpt-4o-mini"
             }
         }
     }
-}
\ No newline at end of file
+}