diff --git a/backend/scripts/run_parallel_simulation.py b/backend/scripts/run_parallel_simulation.py
index d72f8e3..108c600 100644
--- a/backend/scripts/run_parallel_simulation.py
+++ b/backend/scripts/run_parallel_simulation.py
@@ -1031,9 +1031,16 @@ def create_model(config: Dict[str, Any], use_boost: bool = False):
     
     print(f"{config_label} model={llm_model}, base_url={llm_base_url[:40] if llm_base_url else '默认'}...")
     
+    # Build model config dict for camel-ai
+    model_config = {"model_type": llm_model}
+    if llm_api_key:
+        model_config["api_key"] = llm_api_key
+    if llm_base_url:
+        model_config["base_url"] = llm_base_url
+    
     return ModelFactory.create(
         model_platform=ModelPlatformType.OPENAI,
-        model_type=llm_model,
+        model_config_dict=model_config,
     )
 
 
diff --git a/backend/scripts/run_reddit_simulation.py b/backend/scripts/run_reddit_simulation.py
index d857a5b..78ddfd6 100644
--- a/backend/scripts/run_reddit_simulation.py
+++ b/backend/scripts/run_reddit_simulation.py
@@ -461,9 +461,16 @@ class RedditSimulationRunner:
         
         print(f"LLM配置: model={llm_model}, base_url={llm_base_url[:40] if llm_base_url else '默认'}...")
         
+        # Build model config dict for camel-ai
+        model_config = {"model_type": llm_model}
+        if llm_api_key:
+            model_config["api_key"] = llm_api_key
+        if llm_base_url:
+            model_config["base_url"] = llm_base_url
+        
         return ModelFactory.create(
             model_platform=ModelPlatformType.OPENAI,
-            model_type=llm_model,
+            model_config_dict=model_config,
         )
     
     def _get_active_agents_for_round(
diff --git a/backend/scripts/run_twitter_simulation.py b/backend/scripts/run_twitter_simulation.py
index 2703529..dc6884e 100644
--- a/backend/scripts/run_twitter_simulation.py
+++ b/backend/scripts/run_twitter_simulation.py
@@ -454,9 +454,16 @@ class TwitterSimulationRunner:
         
         print(f"LLM配置: model={llm_model}, base_url={llm_base_url[:40] if llm_base_url else '默认'}...")
         
+        # Build model config dict for camel-ai
+        model_config = {"model_type": llm_model}
+        if llm_api_key:
+            model_config["api_key"] = llm_api_key
+        if llm_base_url:
+            model_config["base_url"] = llm_base_url
+        
         return ModelFactory.create(
             model_platform=ModelPlatformType.OPENAI,
-            model_type=llm_model,
+            model_config_dict=model_config,
         )
     
     def _get_active_agents_for_round(