add gpt-4v support for aask and AN.fill

metagpt/provider/base_llm.py

@@ -34,8 +34,26 @@ class BaseLLM(ABC):
     def __init__(self, config: LLMConfig):
         pass
 
-    def _user_msg(self, msg: str) -> dict[str, str]:
-        return {"role": "user", "content": msg}
+    def _user_msg(self, msg: str, images: Optional[Union[str, list[str]]] = None) -> dict[str, Union[str, dict]]:
+        if images:
+            # as gpt-4v, chat with image
+            return self._user_msg_with_imgs(msg, images)
+        else:
+            return {"role": "user", "content": msg}
+
+    def _user_msg_with_imgs(self, msg: str, images: Optional[Union[str, list[str]]]):
+        """
+        images: can be list of http(s) url or base64
+        """
+        if isinstance(images, str):
+            images = [images]
+        content = [{"type": "text", "text": msg}]
+        for image in images:
+            # image url or image base64
+            url = image if image.startswith("http") else f"data:image/jpeg;base64,{image}"
+            # it can with multiple-image inputs
+            content.append({"type": "image_url", "image_url": url})
+        return {"role": "user", "content": content}
 
     def _assistant_msg(self, msg: str) -> dict[str, str]:
         return {"role": "assistant", "content": msg}
@@ -54,6 +72,7 @@ class BaseLLM(ABC):
         msg: str,
         system_msgs: Optional[list[str]] = None,
         format_msgs: Optional[list[dict[str, str]]] = None,
+        images: Optional[Union[str, list[str]]] = None,
         timeout=3,
         stream=True,
     ) -> str:
@@ -65,7 +84,7 @@ class BaseLLM(ABC):
             message = []
         if format_msgs:
             message.extend(format_msgs)
-        message.append(self._user_msg(msg))
+        message.append(self._user_msg(msg, images=images))
         logger.debug(message)
         rsp = await self.acompletion_text(message, stream=stream, timeout=timeout)
         return rsp

metagpt/provider/openai_api.py

@@ -99,7 +99,7 @@ class OpenAILLM(BaseLLM):
             "messages": messages,
             "max_tokens": self._get_max_tokens(messages),
             "n": 1,
-            "stop": None,
+            # "stop": None,  # default it's None and gpt4-v can't have this one
             "temperature": 0.3,
             "model": self.model,
             "timeout": max(self.config.timeout, timeout),