3 files changed, 50 insertions, 29 deletions

diff --git a/g4f/Provider/Ai4Chat.py b/g4f/Provider/Ai4Chat.py
index 4daf1b4a..1096279d 100644
--- a/g4f/Provider/Ai4Chat.py
+++ b/g4f/Provider/Ai4Chat.py
@@ -1,7 +1,9 @@
 from __future__ import annotations
 
-from aiohttp import ClientSession
+import json
 import re
+import logging
+from aiohttp import ClientSession
 
 from ..typing import AsyncResult, Messages
 from .base_provider import AsyncGeneratorProvider, ProviderModelMixin
@@ -9,18 +11,27 @@ from .helper import format_prompt
 
 
 class Ai4Chat(AsyncGeneratorProvider, ProviderModelMixin):
+    label = "AI4Chat"
     url = "https://www.ai4chat.co"
     api_endpoint = "https://www.ai4chat.co/generate-response"
     working = True
-    supports_stream = False
+    supports_stream = True
     supports_system_message = True
     supports_message_history = True
     
     default_model = 'gpt-4'
+    models = [default_model]
+    
+    model_aliases = {}
 
     @classmethod
     def get_model(cls, model: str) -> str:
-        return cls.default_model
+        if model in cls.models:
+            return model
+        elif model in cls.model_aliases:
+            return cls.model_aliases[model]
+        else:
+            return cls.default_model
 
     @classmethod
     async def create_async_generator(
@@ -33,26 +44,25 @@ class Ai4Chat(AsyncGeneratorProvider, ProviderModelMixin):
         model = cls.get_model(model)
         
         headers = {
-            'accept': '*/*',
-            'accept-language': 'en-US,en;q=0.9',
-            'cache-control': 'no-cache',
-            'content-type': 'application/json',
-            'cookie': 'messageCount=2',
-            'origin': 'https://www.ai4chat.co',
-            'pragma': 'no-cache',
-            'priority': 'u=1, i',
-            'referer': 'https://www.ai4chat.co/gpt/talkdirtytome',
-            'sec-ch-ua': '"Chromium";v="129", "Not=A?Brand";v="8"',
-            'sec-ch-ua-mobile': '?0',
-            'sec-ch-ua-platform': '"Linux"',
-            'sec-fetch-dest': 'empty',
-            'sec-fetch-mode': 'cors',
-            'sec-fetch-site': 'same-origin',
-            'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36'
+            "accept": "*/*",
+            "accept-language": "en-US,en;q=0.9",
+            "cache-control": "no-cache",
+            "content-type": "application/json",
+            "origin": "https://www.ai4chat.co",
+            "pragma": "no-cache",
+            "priority": "u=1, i",
+            "referer": "https://www.ai4chat.co/gpt/talkdirtytome",
+            "sec-ch-ua": '"Chromium";v="129", "Not=A?Brand";v="8"',
+            "sec-ch-ua-mobile": "?0",
+            "sec-ch-ua-platform": '"Linux"',
+            "sec-fetch-dest": "empty",
+            "sec-fetch-mode": "cors",
+            "sec-fetch-site": "same-origin",
+            "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36"
         }
         
         async with ClientSession(headers=headers) as session:
-            payload = {
+            data = {
                 "messages": [
                     {
                         "role": "user",
@@ -61,9 +71,18 @@ class Ai4Chat(AsyncGeneratorProvider, ProviderModelMixin):
                 ]
             }
             
-            async with session.post(cls.api_endpoint, json=payload, proxy=proxy) as response:
-                response.raise_for_status()
-                response_data = await response.json()
-                message = response_data.get('message', '')
-                clean_message = re.sub('<[^<]+?>', '', message).strip()
-                yield clean_message
+            try:
+                async with session.post(cls.api_endpoint, json=data, proxy=proxy) as response:
+                    response.raise_for_status()
+                    result = await response.text()
+                    
+                    json_result = json.loads(result)
+                    
+                    message = json_result.get("message", "")
+                    
+                    clean_message = re.sub(r'<[^>]+>', '', message)
+                    
+                    yield clean_message
+            except Exception as e:
+                logging.exception("Error while calling AI 4Chat API: %s", e)
+                yield f"Error: {e}"
diff --git a/g4f/Provider/Chatgpt4Online.py b/g4f/Provider/Chatgpt4Online.py
index 74241253..627facf6 100644
--- a/g4f/Provider/Chatgpt4Online.py
+++ b/g4f/Provider/Chatgpt4Online.py
@@ -13,11 +13,14 @@ class Chatgpt4Online(AsyncGeneratorProvider):
     api_endpoint = "/wp-json/mwai-ui/v1/chats/submit"
     working = True
     
+    default_model = 'gpt-4'
+    models = [default_model]
+    
     async def get_nonce(headers: dict) -> str:
         async with ClientSession(headers=headers) as session:
             async with session.post(f"https://chatgpt4online.org/wp-json/mwai/v1/start_session") as response:
                 return (await response.json())["restNonce"]
-    
+
     @classmethod
     async def create_async_generator(
         cls,
diff --git a/g4f/models.py b/g4f/models.py
index 9b73d475..d7800c76 100644
--- a/g4f/models.py
+++ b/g4f/models.py
@@ -104,7 +104,6 @@ default = Model(
         AmigoChat,
         ChatifyAI,
         Cloudflare,
-        Ai4Chat,
         Editee,
         AiMathGPT,
     ])
@@ -151,7 +150,7 @@ gpt_4_turbo = Model(
 gpt_4 = Model(
     name          = 'gpt-4',
     base_provider = 'OpenAI',
-    best_provider = IterListProvider([NexraChatGPT, NexraChatGptV2, NexraChatGptWeb, Ai4Chat, Airforce, Chatgpt4Online, Bing, OpenaiChat, gpt_4_turbo.best_provider, gpt_4o.best_provider, gpt_4o_mini.best_provider])
+    best_provider = IterListProvider([Chatgpt4Online, Ai4Chat, NexraChatGPT, NexraChatGptV2, NexraChatGptWeb, Airforce, Bing, OpenaiChat, gpt_4_turbo.best_provider, gpt_4o.best_provider, gpt_4o_mini.best_provider])
 )
 
 # o1