4 files changed, 110 insertions, 16 deletions

diff --git a/g4f/Provider/__init__.py b/g4f/Provider/__init__.py
index 0ca22533..b9ee2544 100644
--- a/g4f/Provider/__init__.py
+++ b/g4f/Provider/__init__.py
@@ -38,10 +38,14 @@ from .FastGpt       import FastGpt
 from .V50           import V50
 from .Wuguokai      import Wuguokai
 
-from .base_provider import BaseProvider, AsyncProvider, AsyncGeneratorProvider
+from .base_provider  import BaseProvider, AsyncProvider, AsyncGeneratorProvider
+from .retry_provider import RetryProvider
 
 __all__ = [
     'BaseProvider',
+    'AsyncProvider',
+    'AsyncGeneratorProvider',
+    'RetryProvider',
     'Acytoo',
     'Aichat',
     'Ails',
diff --git a/g4f/Provider/retry_provider.py b/g4f/Provider/retry_provider.py
new file mode 100644
index 00000000..e1a9cd1f
--- /dev/null
+++ b/g4f/Provider/retry_provider.py
@@ -0,0 +1,81 @@
+from __future__ import annotations
+
+import random
+
+from ..typing import CreateResult
+from .base_provider import BaseProvider, AsyncProvider
+
+
+class RetryProvider(AsyncProvider):
+    __name__ = "RetryProvider"
+    working               = True
+    needs_auth            = False
+    supports_stream       = True
+    supports_gpt_35_turbo = False
+    supports_gpt_4        = False
+
+    def __init__(
+        self,
+        providers: list[type[BaseProvider]],
+        shuffle: bool = True
+    ) -> None:
+        self.providers = providers
+        self.shuffle = shuffle
+
+
+    def create_completion(
+        self,
+        model: str,
+        messages: list[dict[str, str]],
+        stream: bool = False,
+        **kwargs
+    ) -> CreateResult:
+        if stream:
+            providers = [provider for provider in self.providers if provider.supports_stream]
+        else:
+            providers = self.providers
+        if self.shuffle:
+            random.shuffle(providers)
+
+        self.exceptions = {}
+        started = False
+        for provider in providers:
+            try:
+                for token in provider.create_completion(model, messages, stream, **kwargs):
+                    yield token
+                    started = True
+                if started:
+                    return
+            except Exception as e:
+                self.exceptions[provider.__name__] = e
+                if started:
+                    break
+
+        self.raise_exceptions()
+
+    async def create_async(
+        self,
+        model: str,
+        messages: list[dict[str, str]],
+        **kwargs
+    ) -> str:
+        providers = [provider for provider in self.providers if issubclass(provider, AsyncProvider)]
+        if self.shuffle:
+            random.shuffle(providers)
+        
+        self.exceptions = {}
+        for provider in providers:
+            try:
+                return await provider.create_async(model, messages, **kwargs)
+            except Exception as e:
+                self.exceptions[provider.__name__] = e
+    
+        self.raise_exceptions()
+    
+    def raise_exceptions(self):
+        if self.exceptions:
+            raise RuntimeError("\n".join(["All providers failed:"] + [
+                f"{p}: {self.exceptions[p].__class__.__name__}: {self.exceptions[p]}" for p in self.exceptions
+            ]))
+        
+        raise RuntimeError("No provider found")
\ No newline at end of file
diff --git a/g4f/__init__.py b/g4f/__init__.py
index e42be8a8..8fdfe21f 100644
--- a/g4f/__init__.py
+++ b/g4f/__init__.py
@@ -14,13 +14,7 @@ def get_model_and_provider(model: Union[models.Model, str], provider: type[BaseP
             raise Exception(f'The model: {model} does not exist')
 
     if not provider:
-        if isinstance(model.best_provider, list):
-            if stream:
-                provider = random.choice([p for p in model.best_provider if p.supports_stream])
-            else:
-                provider = random.choice(model.best_provider)
-        else:
-            provider = model.best_provider
+        provider = model.best_provider
 
     if not provider:
         raise Exception(f'No provider found for model: {model}')
@@ -70,7 +64,7 @@ class ChatCompletion:
         
         model, provider = get_model_and_provider(model, provider, False)
 
-        if not issubclass(provider, AsyncProvider):
+        if not issubclass(type(provider), AsyncProvider):
             raise Exception(f"Provider: {provider.__name__} doesn't support create_async")
 
         return await provider.create_async(model.name, messages, **kwargs)
diff --git a/g4f/models.py b/g4f/models.py
index 1066e1aa..f1b0ec31 100644
--- a/g4f/models.py
+++ b/g4f/models.py
@@ -1,17 +1,23 @@
 from __future__  import annotations
 from dataclasses import dataclass
 from .typing     import Union
-from .Provider   import BaseProvider 
+from .Provider   import BaseProvider, RetryProvider
 from .Provider   import (
     ChatgptLogin,
-    CodeLinkAva,
     ChatgptAi, 
     ChatBase, 
     Vercel, 
     DeepAi, 
     Aivvm, 
     Bard, 
-    H2o 
+    H2o,
+    GptGo,
+    Bing,
+    PerplexityAi,
+    Wewordle,
+    Yqcloud,
+    AItianhu,
+    Aichat,
 )
 
 @dataclass(unsafe_hash=True)
@@ -24,15 +30,24 @@ class Model:
 # Works for Liaobots, H2o, OpenaiChat, Yqcloud, You
 default = Model(
     name          = "",
-    base_provider = "huggingface")
+    base_provider = "",
+    best_provider = RetryProvider([
+        Bing,         # Not fully GPT 3 or 4
+        PerplexityAi, # Adds references to sources
+        Wewordle,     # Responds with markdown
+        Yqcloud,      # Answers short questions in chinese
+        ChatBase,     # Don't want to answer creatively
+        DeepAi, ChatgptLogin, ChatgptAi, Aivvm, GptGo, AItianhu, Aichat,
+    ])
+)
 
 # GPT-3.5 / GPT-4
 gpt_35_turbo = Model(
     name          = 'gpt-3.5-turbo',
     base_provider = 'openai',
-    best_provider = [
-        DeepAi, CodeLinkAva, ChatgptLogin, ChatgptAi, ChatBase, Aivvm
-    ]
+    best_provider = RetryProvider([
+        DeepAi, ChatgptLogin, ChatgptAi, Aivvm, GptGo, AItianhu, Aichat,
+    ])
 )
 
 gpt_4 = Model(