1 files changed, 9 insertions, 12 deletions

diff --git a/g4f/Provider/Pi.py b/g4f/Provider/Pi.py
index 2f7dc436..5a1e9f0e 100644
--- a/g4f/Provider/Pi.py
+++ b/g4f/Provider/Pi.py
@@ -4,12 +4,13 @@ import json
 
 from ..typing import CreateResult, Messages
 from .base_provider import AbstractProvider, format_prompt
-from ..requests import Session, get_session_from_browser
+from ..requests import Session, get_session_from_browser, raise_for_status
 
 class Pi(AbstractProvider):
     url             = "https://pi.ai/talk"
     working         = True
     supports_stream = True
+    _session = None
 
     @classmethod
     def create_completion(
@@ -17,20 +18,19 @@ class Pi(AbstractProvider):
         model: str,
         messages: Messages,
         stream: bool,
-        session: Session = None,
         proxy: str = None,
         timeout: int = 180,
         conversation_id: str = None,
         **kwargs
     ) -> CreateResult:
-        if not session:
-            session = get_session_from_browser(url=cls.url, proxy=proxy, timeout=timeout)
+        if cls._session is None:
+            cls._session = get_session_from_browser(url=cls.url, proxy=proxy, timeout=timeout)
         if not conversation_id:
-            conversation_id = cls.start_conversation(session)
+            conversation_id = cls.start_conversation(cls._session)
             prompt = format_prompt(messages)
         else:
             prompt = messages[-1]["content"]
-        answer = cls.ask(session, prompt, conversation_id)
+        answer = cls.ask(cls._session, prompt, conversation_id)
         for line in answer:
             if "text" in line:
                 yield line["text"]
@@ -41,8 +41,7 @@ class Pi(AbstractProvider):
             'accept': 'application/json',
             'x-api-version': '3'
         })
-        if 'Just a moment' in response.text:
-            raise RuntimeError('Error: Cloudflare detected')
+        raise_for_status(response)
         return response.json()['conversations'][0]['sid']
         
     def get_chat_history(session: Session, conversation_id: str):
@@ -50,8 +49,7 @@ class Pi(AbstractProvider):
             'conversation': conversation_id,
         }
         response = session.get('https://pi.ai/api/chat/history', params=params)
-        if 'Just a moment' in response.text:
-            raise RuntimeError('Error: Cloudflare detected')
+        raise_for_status(response)
         return response.json()
 
     def ask(session: Session, prompt: str, conversation_id: str):
@@ -61,9 +59,8 @@ class Pi(AbstractProvider):
             'mode': 'BASE',
         }
         response = session.post('https://pi.ai/api/chat', json=json_data, stream=True)
+        raise_for_status(response)
         for line in response.iter_lines():
-            if b'Just a moment' in line:
-                raise RuntimeError('Error: Cloudflare detected')
             if line.startswith(b'data: {"text":'):
                yield json.loads(line.split(b'data: ')[1])
             elif line.startswith(b'data: {"title":'):