feat: optimize minimax llm call (#1312)

api/core/model_providers/models/llm/minimax_model.py

@@ -1,26 +1,23 @@
-import decimal
 from typing import List, Optional, Any
 
 from langchain.callbacks.manager import Callbacks
-from langchain.llms import Minimax
 from langchain.schema import LLMResult
 
 from core.model_providers.error import LLMBadRequestError
 from core.model_providers.models.llm.base import BaseLLM
-from core.model_providers.models.entity.message import PromptMessage, MessageType
+from core.model_providers.models.entity.message import PromptMessage
 from core.model_providers.models.entity.model_params import ModelMode, ModelKwargs
+from core.third_party.langchain.llms.minimax_llm import MinimaxChatLLM
 
 
 class MinimaxModel(BaseLLM):
-    model_mode: ModelMode = ModelMode.COMPLETION
+    model_mode: ModelMode = ModelMode.CHAT
 
     def _init_client(self) -> Any:
         provider_model_kwargs = self._to_model_kwargs_input(self.model_rules, self.model_kwargs)
-        return Minimax(
+        return MinimaxChatLLM(
             model=self.name,
-            model_kwargs={
-                'stream': False
-            },
+            streaming=self.streaming,
             callbacks=self.callbacks,
             **self.credentials,
             **provider_model_kwargs
@@ -49,7 +46,7 @@ class MinimaxModel(BaseLLM):
         :return:
         """
         prompts = self._get_prompt_from_messages(messages)
-        return max(self._client.get_num_tokens(prompts), 0)
+        return max(self._client.get_num_tokens_from_messages(prompts), 0)
 
     def get_currency(self):
         return 'RMB'
@@ -65,3 +62,7 @@ class MinimaxModel(BaseLLM):
             return LLMBadRequestError(f"Minimax: {str(ex)}")
         else:
             return ex
+
+    @property
+    def support_streaming(self):
+        return True