[BUG] request failed with Image failed in base64 through OpenAI Python SDK

[fivejjs]

Describe the bug

response = await self.client.chat.completions.create(
                model="deepseek-reasoner",
                messages=[
                    {
                        "role": "user",
                        "content": [
                            {
                                "type": "image_url",
                                "image_url": {
                                    "url": f"data:image/{media_type};base64,{image_data}"
                                },
                            },
                            {"type": "text", "text": prompt_text},
                        ],
                    }
                ],
                max_tokens=1000,
            )

The error:

OpenAI API error: Failed to deserialize the JSON body into the target type: messages[0]: data did not match any variant of untagged enum ChatCompletionRequestContent at line 1 column 286017

Error analyzing image: Failed to deserialize the JSON body into the target type: messages[0]: data did not match any variant of untagged enum ChatCompletionRequestContent at line 1 column 286017

To Reproduce
Try some ordinary "png" image

Expected behavior
proper response on the image content according to the prompt

** Other context **
I found a explanation in this issue: deepseek-ai/DeepSeek-R1#53.
But it is worth to have similar capability as OpenAI 's API.

[mowentian]

thanks~
#339