diff --git a/api/core/llm_generator/llm_generator.py b/api/core/llm_generator/llm_generator.py
index aa258c9f89..c43c0274cd 100644
--- a/api/core/llm_generator/llm_generator.py
+++ b/api/core/llm_generator/llm_generator.py
@@ -2,7 +2,7 @@ import json
 import logging
 import re
 from collections.abc import Sequence
-from typing import Protocol, TypedDict, cast
+from typing import Any, Protocol, TypedDict, cast
 
 import json_repair
 from graphon.enums import WorkflowNodeExecutionMetadataKey
@@ -533,7 +533,7 @@ class LLMGenerator:
     def __instruction_modify_common(
         tenant_id: str,
         model_config: ModelConfig,
-        last_run: dict | None,
+        last_run: dict[str, Any] | None,
         current: str | None,
         error_message: str | None,
         instruction: str,
diff --git a/api/core/llm_generator/output_parser/structured_output.py b/api/core/llm_generator/output_parser/structured_output.py
index 9bdca1e83b..a8ad7c9179 100644
--- a/api/core/llm_generator/output_parser/structured_output.py
+++ b/api/core/llm_generator/output_parser/structured_output.py
@@ -202,7 +202,7 @@ def _handle_native_json_schema(
     structured_output_schema: Mapping,
     model_parameters: dict[str, Any],
     rules: list[ParameterRule],
-):
+) -> dict[str, Any]:
     """
     Handle structured output for models with native JSON schema support.
 
@@ -224,7 +224,7 @@ def _handle_native_json_schema(
     return model_parameters
 
 
-def _set_response_format(model_parameters: dict[str, Any], rules: list[ParameterRule]):
+def _set_response_format(model_parameters: dict[str, Any], rules: list[ParameterRule]) -> None:
     """
     Set the appropriate response format parameter based on model rules.
 
@@ -326,7 +326,7 @@ def _prepare_schema_for_model(provider: str, model_schema: AIModelEntity, schema
         return {"schema": processed_schema, "name": "llm_response"}
 
 
-def remove_additional_properties(schema: dict[str, Any]):
+def remove_additional_properties(schema: dict[str, Any]) -> None:
     """
     Remove additionalProperties fields from JSON schema.
     Used for models like Gemini that don't support this property.
@@ -349,7 +349,7 @@ def remove_additional_properties(schema: dict[str, Any]):
                     remove_additional_properties(item)
 
 
-def convert_boolean_to_string(schema: dict):
+def convert_boolean_to_string(schema: dict[str, Any]) -> None:
     """
     Convert boolean type specifications to string in JSON schema.
 
diff --git a/api/core/prompt/simple_prompt_transform.py b/api/core/prompt/simple_prompt_transform.py
index d4e17613a2..dc8391a6a5 100644
--- a/api/core/prompt/simple_prompt_transform.py
+++ b/api/core/prompt/simple_prompt_transform.py
@@ -313,7 +313,7 @@ class SimplePromptTransform(PromptTransform):
 
         return prompt_message
 
-    def _get_prompt_rule(self, app_mode: AppMode, provider: str, model: str):
+    def _get_prompt_rule(self, app_mode: AppMode, provider: str, model: str) -> dict[str, Any]:
         """
         Get simple prompt rule.
         :param app_mode: app mode
@@ -325,7 +325,7 @@ class SimplePromptTransform(PromptTransform):
 
         # Check if the prompt file is already loaded
         if prompt_file_name in prompt_file_contents:
-            return cast(dict, prompt_file_contents[prompt_file_name])
+            return cast(dict[str, Any], prompt_file_contents[prompt_file_name])
 
         # Get the absolute path of the subdirectory
         prompt_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "prompt_templates")
@@ -338,7 +338,7 @@ class SimplePromptTransform(PromptTransform):
             # Store the content of the prompt file
             prompt_file_contents[prompt_file_name] = content
 
-            return cast(dict, content)
+            return cast(dict[str, Any], content)
 
     def _prompt_file_name(self, app_mode: AppMode, provider: str, model: str) -> str:
         # baichuan