diff --git a/examples/agent_creator.py b/examples/agent_creator.py
index 34160d398..bd58840ce 100644
--- a/examples/agent_creator.py
+++ b/examples/agent_creator.py
@@ -6,13 +6,12 @@ Author: garylin2099
 import re
 
 from metagpt.actions import Action
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.const import METAGPT_ROOT
 from metagpt.logs import logger
 from metagpt.roles import Role
 from metagpt.schema import Message
 
-config = Config.default()
 EXAMPLE_CODE_FILE = METAGPT_ROOT / "examples/build_customized_agent.py"
 MULTI_ACTION_AGENT_CODE_EXAMPLE = EXAMPLE_CODE_FILE.read_text()
 
diff --git a/metagpt/actions/requirement_analysis/framework/__init__.py b/metagpt/actions/requirement_analysis/framework/__init__.py
index 5e0653088..968effd86 100644
--- a/metagpt/actions/requirement_analysis/framework/__init__.py
+++ b/metagpt/actions/requirement_analysis/framework/__init__.py
@@ -16,7 +16,7 @@ from pydantic import BaseModel
 
 from metagpt.actions.requirement_analysis.framework.evaluate_framework import EvaluateFramework
 from metagpt.actions.requirement_analysis.framework.write_framework import WriteFramework
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.utils.common import awrite
 
 
@@ -54,7 +54,7 @@ async def save_framework(
     output_dir = (
         Path(output_dir)
         if output_dir
-        else Config.default().workspace.path / (datetime.now().strftime("%Y%m%d%H%M%ST") + uuid.uuid4().hex[0:8])
+        else config.workspace.path / (datetime.now().strftime("%Y%m%d%H%M%ST") + uuid.uuid4().hex[0:8])
     )
     output_dir.mkdir(parents=True, exist_ok=True)
 
diff --git a/metagpt/config2.py b/metagpt/config2.py
index 1942e5ef5..84b6059ef 100644
--- a/metagpt/config2.py
+++ b/metagpt/config2.py
@@ -178,3 +178,4 @@ def merge_dict(dicts: Iterable[Dict]) -> Dict:
 
 
 _CONFIG_CACHE = {}
+config = Config.default()
diff --git a/metagpt/exp_pool/decorator.py b/metagpt/exp_pool/decorator.py
index d49c13e95..bb285d31c 100644
--- a/metagpt/exp_pool/decorator.py
+++ b/metagpt/exp_pool/decorator.py
@@ -6,7 +6,7 @@ from typing import Any, Callable, Optional, TypeVar
 
 from pydantic import BaseModel, ConfigDict, model_validator
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.exp_pool.context_builders import BaseContextBuilder, SimpleContextBuilder
 from metagpt.exp_pool.manager import ExperienceManager, get_exp_manager
 from metagpt.exp_pool.perfect_judges import BasePerfectJudge, SimplePerfectJudge
@@ -60,8 +60,6 @@ def exp_cache(
     def decorator(func: Callable[..., ReturnType]) -> Callable[..., ReturnType]:
         @functools.wraps(func)
         async def get_or_create(args: Any, kwargs: Any) -> ReturnType:
-            config = Config.default()
-
             if not config.exp_pool.enabled:
                 rsp = func(*args, **kwargs)
                 return await rsp if asyncio.iscoroutine(rsp) else rsp
diff --git a/metagpt/ext/android_assistant/actions/manual_record.py b/metagpt/ext/android_assistant/actions/manual_record.py
index 71e4d5e82..bcfb2ed89 100644
--- a/metagpt/ext/android_assistant/actions/manual_record.py
+++ b/metagpt/ext/android_assistant/actions/manual_record.py
@@ -7,7 +7,7 @@ from pathlib import Path
 import cv2
 
 from metagpt.actions.action import Action
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.environment.android.android_env import AndroidEnv
 from metagpt.environment.android.const import ADB_EXEC_FAIL
 from metagpt.environment.android.env_space import (
@@ -55,7 +55,6 @@ class ManualRecord(Action):
         self.task_desc_path.write_text(task_desc)
 
         step = 0
-        config = Config.default()
         extra_config = config.extra
         while True:
             step += 1
diff --git a/metagpt/ext/android_assistant/actions/parse_record.py b/metagpt/ext/android_assistant/actions/parse_record.py
index f96ad0a19..304daf655 100644
--- a/metagpt/ext/android_assistant/actions/parse_record.py
+++ b/metagpt/ext/android_assistant/actions/parse_record.py
@@ -8,7 +8,7 @@ import re
 from pathlib import Path
 
 from metagpt.actions.action import Action
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.ext.android_assistant.actions.parse_record_an import RECORD_PARSE_NODE
 from metagpt.ext.android_assistant.prompts.operation_prompt import (
     long_press_doc_template,
@@ -45,7 +45,6 @@ class ParseRecord(Action):
             path.mkdir(parents=True, exist_ok=True)
 
         task_desc = self.task_desc_path.read_text()
-        config = Config.default()
         extra_config = config.extra
 
         with open(self.record_path, "r") as record_file:
diff --git a/metagpt/ext/android_assistant/actions/screenshot_parse.py b/metagpt/ext/android_assistant/actions/screenshot_parse.py
index 8cb738522..4d8bb0e1e 100644
--- a/metagpt/ext/android_assistant/actions/screenshot_parse.py
+++ b/metagpt/ext/android_assistant/actions/screenshot_parse.py
@@ -6,7 +6,7 @@ import ast
 from pathlib import Path
 
 from metagpt.actions.action import Action
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.environment.android.android_env import AndroidEnv
 from metagpt.environment.android.const import ADB_EXEC_FAIL
 from metagpt.environment.android.env_space import (
@@ -101,7 +101,6 @@ next action. You should always prioritize these documented elements for interact
         grid_on: bool,
         env: AndroidEnv,
     ):
-        config = Config.default()
         extra_config = config.extra
         for path in [task_dir, docs_dir]:
             path.mkdir(parents=True, exist_ok=True)
diff --git a/metagpt/ext/android_assistant/actions/self_learn_and_reflect.py b/metagpt/ext/android_assistant/actions/self_learn_and_reflect.py
index b783217ff..5e9cfbb45 100644
--- a/metagpt/ext/android_assistant/actions/self_learn_and_reflect.py
+++ b/metagpt/ext/android_assistant/actions/self_learn_and_reflect.py
@@ -6,7 +6,7 @@ import ast
 from pathlib import Path
 
 from metagpt.actions.action import Action
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.environment.android.android_env import AndroidEnv
 from metagpt.environment.android.const import ADB_EXEC_FAIL
 from metagpt.environment.android.env_space import (
@@ -80,7 +80,6 @@ class SelfLearnAndReflect(Action):
     async def run_self_learn(
         self, round_count: int, task_desc: str, last_act: str, task_dir: Path, env: AndroidEnv
     ) -> AndroidActionOutput:
-        config = Config.default()
         extra_config = config.extra
         screenshot_path: Path = env.observe(
             EnvObsParams(obs_type=EnvObsType.GET_SCREENSHOT, ss_name=f"{round_count}_before", local_save_dir=task_dir)
diff --git a/metagpt/ext/android_assistant/roles/android_assistant.py b/metagpt/ext/android_assistant/roles/android_assistant.py
index 6462e30a2..97d66d30e 100644
--- a/metagpt/ext/android_assistant/roles/android_assistant.py
+++ b/metagpt/ext/android_assistant/roles/android_assistant.py
@@ -9,7 +9,7 @@ from typing import Optional
 from pydantic import Field
 
 from metagpt.actions.add_requirement import UserRequirement
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.const import EXAMPLE_PATH
 from metagpt.ext.android_assistant.actions.manual_record import ManualRecord
 from metagpt.ext.android_assistant.actions.parse_record import ParseRecord
@@ -38,7 +38,6 @@ class AndroidAssistant(Role):
 
     def __init__(self, **data):
         super().__init__(**data)
-        config = Config.default()
         self._watch([UserRequirement, AndroidActionOutput])
         extra_config = config.extra
         self.task_desc = extra_config.get("task_desc", "Just explore any app in this phone!")
diff --git a/metagpt/ext/android_assistant/utils/utils.py b/metagpt/ext/android_assistant/utils/utils.py
index 168369054..f1fa13869 100644
--- a/metagpt/ext/android_assistant/utils/utils.py
+++ b/metagpt/ext/android_assistant/utils/utils.py
@@ -10,7 +10,7 @@ from xml.etree.ElementTree import Element, iterparse
 import cv2
 import pyshine as ps
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.ext.android_assistant.utils.schema import (
     ActionOp,
     AndroidElement,
@@ -48,7 +48,6 @@ def get_id_from_element(elem: Element) -> str:
 
 def traverse_xml_tree(xml_path: Path, elem_list: list[AndroidElement], attrib: str, add_index=False):
     path = []
-    config = Config.default()
     extra_config = config.extra
     for event, elem in iterparse(str(xml_path), ["start", "end"]):
         if event == "start":
diff --git a/metagpt/ext/stanford_town/utils/utils.py b/metagpt/ext/stanford_town/utils/utils.py
index b4e15f485..4e81298c9 100644
--- a/metagpt/ext/stanford_town/utils/utils.py
+++ b/metagpt/ext/stanford_town/utils/utils.py
@@ -13,7 +13,7 @@ from typing import Union
 
 from openai import OpenAI
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.logs import logger
 
 
@@ -48,7 +48,6 @@ def read_csv_to_list(curr_file: str, header=False, strip_trail=True):
 
 
 def get_embedding(text, model: str = "text-embedding-ada-002"):
-    config = Config.default()
     text = text.replace("\n", " ")
     embedding = None
     if not text:
diff --git a/metagpt/rag/engines/simple.py b/metagpt/rag/engines/simple.py
index 1c0834c96..61200a295 100644
--- a/metagpt/rag/engines/simple.py
+++ b/metagpt/rag/engines/simple.py
@@ -31,7 +31,7 @@ from llama_index.core.schema import (
     TransformComponent,
 )
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.rag.factories import (
     get_index,
     get_rag_embedding,
@@ -400,7 +400,6 @@ class SimpleEngine(RetrieverQueryEngine):
             dict[file_type: BaseReader]
         """
         file_extractor: dict[str:BaseReader] = {}
-        config = Config.default()
         if config.omniparse.base_url:
             pdf_parser = OmniParse(
                 api_key=config.omniparse.api_key,
diff --git a/metagpt/rag/factories/llm.py b/metagpt/rag/factories/llm.py
index e936e3a45..36b17da36 100644
--- a/metagpt/rag/factories/llm.py
+++ b/metagpt/rag/factories/llm.py
@@ -12,7 +12,7 @@ from llama_index.core.llms import (
 from llama_index.core.llms.callbacks import llm_completion_callback
 from pydantic import Field
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.provider.base_llm import BaseLLM
 from metagpt.utils.async_helper import NestAsyncio
 from metagpt.utils.token_counter import TOKEN_MAX
@@ -41,7 +41,6 @@ class RAGLLM(CustomLLM):
         **kwargs
     ):
         super().__init__(*args, **kwargs)
-        config = Config.default()
         if context_window < 0:
             context_window = TOKEN_MAX.get(config.llm.model, DEFAULT_CONTEXT_WINDOW)
 
diff --git a/metagpt/rag/schema.py b/metagpt/rag/schema.py
index 12e635a1a..5c63b09df 100644
--- a/metagpt/rag/schema.py
+++ b/metagpt/rag/schema.py
@@ -11,7 +11,7 @@ from llama_index.core.schema import TextNode
 from llama_index.core.vector_stores.types import VectorStoreQueryMode
 from pydantic import BaseModel, ConfigDict, Field, PrivateAttr, model_validator
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.configs.embedding_config import EmbeddingType
 from metagpt.logs import logger
 from metagpt.rag.interface import RAGObject
@@ -47,7 +47,6 @@ class FAISSRetrieverConfig(IndexRetrieverConfig):
     @model_validator(mode="after")
     def check_dimensions(self):
         if self.dimensions == 0:
-            config = Config.default()
             self.dimensions = config.embedding.dimensions or self._embedding_type_to_dimensions.get(
                 config.embedding.api_type, 1536
             )
@@ -89,7 +88,6 @@ class MilvusRetrieverConfig(IndexRetrieverConfig):
     @model_validator(mode="after")
     def check_dimensions(self):
         if self.dimensions == 0:
-            config = Config.default()
             self.dimensions = config.embedding.dimensions or self._embedding_type_to_dimensions.get(
                 config.embedding.api_type, 1536
             )
diff --git a/metagpt/software_company.py b/metagpt/software_company.py
index 508a6a5f3..73dcdd5db 100644
--- a/metagpt/software_company.py
+++ b/metagpt/software_company.py
@@ -27,7 +27,7 @@ def generate_repo(
     recover_path=None,
 ):
     """Run the startup logic. Can be called from CLI or other Python scripts."""
-    from metagpt.config2 import Config
+    from metagpt.config2 import config
     from metagpt.context import Context
     from metagpt.roles import (
         Architect,
@@ -38,8 +38,6 @@ def generate_repo(
     )
     from metagpt.team import Team
 
-    config = Config.default()
-
     config.update_via_cli(project_path, project_name, inc, reqa_file, max_auto_summarize_code)
     ctx = Context(config=config)
 
diff --git a/metagpt/tools/libs/index_repo.py b/metagpt/tools/libs/index_repo.py
index 4c4e6c59b..5f95f9c02 100644
--- a/metagpt/tools/libs/index_repo.py
+++ b/metagpt/tools/libs/index_repo.py
@@ -11,7 +11,7 @@ from llama_index.core.base.embeddings.base import BaseEmbedding
 from llama_index.core.schema import NodeWithScore
 from pydantic import BaseModel, Field, model_validator
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.context import Context
 from metagpt.logs import logger
 from metagpt.rag.engines import SimpleEngine
@@ -142,7 +142,6 @@ class IndexRepo(BaseModel):
             return flat_nodes
 
         if not self.embedding:
-            config = Config.default()
             if self.model:
                 config.embedding.model = self.model
             factory = RAGEmbeddingFactory(config)
diff --git a/metagpt/tools/ut_writer.py b/metagpt/tools/ut_writer.py
index 9e67a3585..243871aff 100644
--- a/metagpt/tools/ut_writer.py
+++ b/metagpt/tools/ut_writer.py
@@ -4,7 +4,7 @@
 import json
 from pathlib import Path
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.provider.openai_api import OpenAILLM as GPTAPI
 from metagpt.utils.common import awrite
 
@@ -282,7 +282,6 @@ class UTGenerator:
         """Choose based on different calling methods"""
         result = ""
         if self.chatgpt_method == "API":
-            config = Config.default()
             result = await GPTAPI(config.get_openai_llm()).aask_code(messages=messages)
 
         return result
diff --git a/metagpt/utils/embedding.py b/metagpt/utils/embedding.py
index 3fcf1f25b..3d53a314c 100644
--- a/metagpt/utils/embedding.py
+++ b/metagpt/utils/embedding.py
@@ -7,11 +7,10 @@
 """
 from llama_index.embeddings.openai import OpenAIEmbedding
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 
 
 def get_embedding() -> OpenAIEmbedding:
-    config = Config.default()
     llm = config.get_openai_llm()
     if llm is None:
         raise ValueError("To use OpenAIEmbedding, please ensure that config.llm.api_type is correctly set to 'openai'.")
diff --git a/metagpt/utils/file.py b/metagpt/utils/file.py
index 75107c8be..d4cfc4d0a 100644
--- a/metagpt/utils/file.py
+++ b/metagpt/utils/file.py
@@ -13,7 +13,7 @@ from typing import Optional, Tuple, Union
 import aiofiles
 from fsspec.implementations.memory import MemoryFileSystem as _MemoryFileSystem
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 from metagpt.logs import logger
 from metagpt.utils import read_docx
 from metagpt.utils.common import aread, aread_bin, awrite_bin, check_http_endpoint
@@ -190,7 +190,6 @@ class File:
 
     @staticmethod
     async def _read_omniparse_config() -> Tuple[str, int]:
-        config = Config.default()
         if config.omniparse and config.omniparse.base_url:
             return config.omniparse.base_url, config.omniparse.timeout
         return "", 0
diff --git a/metagpt/utils/make_sk_kernel.py b/metagpt/utils/make_sk_kernel.py
index f0c55b07c..283a682d6 100644
--- a/metagpt/utils/make_sk_kernel.py
+++ b/metagpt/utils/make_sk_kernel.py
@@ -13,11 +13,10 @@ from semantic_kernel.connectors.ai.open_ai.services.open_ai_chat_completion impo
     OpenAIChatCompletion,
 )
 
-from metagpt.config2 import Config
+from metagpt.config2 import config
 
 
 def make_sk_kernel():
-    config = Config.default()
     kernel = sk.Kernel()
     if llm := config.get_azure_llm():
         kernel.add_chat_service(