fix(model): fix the bug that Qwen-Omni requires different input_audio format than OpenAI models

examples/agent/voice_agent/main.py

@@ -19,7 +19,7 @@ async def main() -> None:
         name="Friday",
         sys_prompt="You are a helpful assistant",
         model=OpenAIChatModel(
-            model_name="qwen-omni-turbo",
+            model_name="qwen3-omni-flash",
             client_args={
                 "base_url": "https://dashscope.aliyuncs.com/"
                 "compatible-mode/v1",

src/agentscope/model/_openai_model.py

@@ -37,6 +37,31 @@
     AsyncStream = "openai.types.chat.AsyncStream"
 
 
+def _format_audio_data_for_qwen_omni(messages: list[dict]) -> None:
+    """Qwen-omni uses OpenAI-compatible API but requires different audio
+    data format than OpenAI with "data:;base64," prefix.
+    Refer to `Qwen-omni documentation
+    <https://bailian.console.aliyun.com/?tab=doc#/doc/?type=model&url=2867839>`_
+    for more details.
+
+    Args:
+        messages (`list[dict]`):
+            The list of message dictionaries from OpenAI formatter.
+    """
+    for msg in messages:
+        if isinstance(msg.get("content"), list):
+            for block in msg["content"]:
+                if (
+                    isinstance(block, dict)
+                    and "input_audio" in block
+                    and isinstance(block["input_audio"].get("data"), str)
+                ):
+                    if not block["input_audio"]["data"].startswith("http"):
+                        block["input_audio"] = (
+                            "data:;base64," + block["input_audio"]["data"]
+                        )
+
+
 class OpenAIChatModel(ChatModelBase):
     """The OpenAI chat model class."""
 
@@ -154,6 +179,10 @@ async def __call__(
                 "and 'content' key for OpenAI API.",
             )
 
+        # Qwen-omni requires different base64 audio format from openai
+        if "omni" in self.model_name.lower():
+            _format_audio_data_for_qwen_omni(messages)
+
         kwargs = {
             "model": self.model_name,
             "messages": messages,