diff --git a/libs/community/langchain_community/llms/minimax.py b/libs/community/langchain_community/llms/minimax.py
index fdf114b3c6a..9aed9673b5b 100644
--- a/libs/community/langchain_community/llms/minimax.py
+++ b/libs/community/langchain_community/llms/minimax.py
@@ -95,10 +95,10 @@ class MinimaxCommon(BaseModel):
     @model_validator(mode="after")
     def post_init(self) -> Self:
         """Post initialization."""
-        self._client = _MinimaxEndpointClient(
-            host=self.minimax_api_host,
-            api_key=self.minimax_api_key,
-            group_id=self.minimax_group_id,
+        self._client = _MinimaxEndpointClient(  # type: ignore
+            host=self.minimax_api_host,  # type: ignore
+            api_key=self.minimax_api_key,  # type: ignore
+            group_id=self.minimax_group_id,  # type: ignore
         )
         return self
 
diff --git a/libs/community/langchain_community/llms/solar.py b/libs/community/langchain_community/llms/solar.py
index 071ffee8c68..d8f8dc001cb 100644
--- a/libs/community/langchain_community/llms/solar.py
+++ b/libs/community/langchain_community/llms/solar.py
@@ -95,6 +95,10 @@ class SolarCommon(BaseModel):
 
     @model_validator(mode="after")
     def post_init(self) -> Self:
+        if not isinstance(self.solar_api_key, SecretStr):
+            raise ValueError(
+                f"solar_api_key must be specified. Got type: {type(self.solar_api_key)}"
+            )
         self._client = _SolarClient(api_key=self.solar_api_key, base_url=self.base_url)
         return self