OpenAI vision API returns wrong data. Why?

Database & APIs

Hi folks, I'm about to create an app to extract data from images using OpenAI and its function calling. I went through this tutorial: https://www.youtube.com/watch?v=TQEYfIqnwcY

I modified the API call, but the result is incorrect. Can anybody tell me what might be wrong with my API body? I wan't to get json compatible data. The Response is always asking for the image Url.

The API body

{
  "model": "gpt-4-0613",
  "messages": [
    {
      "role": "user",
      "content": "Bitte extrahiere die Eventinformationen aus dem Bild und gib sie in folgendem JSON-Format zurück: {\"Eventname\": \"\", \"EventDatum\": \"\", \"EventLocation\": \"\", \"Beschreibung\": \"\", \"Preis\": \"\", \"Website\": \"\"}. Achte darauf, dass das Datum im Format \"YYYY-MM-DD HH:MM:SS\" ist und alle Felder ausgefüllt sind, wenn die Informationen im Bild vorhanden sind."
    }
  ],
  "functions": [
    {
      "name": "get_event_data",
      "parameters": {
        "type": "object",
        "properties": {
          "image_url": {
            "type": "string",
            "description": "The URL of the image from which event data should be extracted."
          }
        },
        "required": [
          "image_url"
        ]
      }
    }
  ],
  "function_call": {
    "name": "get_event_data",
    "arguments": {
      "image_url": "https://www.example.png"
    }
  }
}


The Response

{
  "id": "chatcmpl-AEgEx2hM4towiqHHy6kPodjF0h1kl",
  "object": "chat.completion",
  "created": 1728062327,
  "model": "gpt-4-0613",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": null,
        "function_call": {
          "name": "get_event_data",
          "arguments": "{\n  \"image_url\": \"https://example.com/image.jpg\"\n}"
        },
        "refusal": null
      },
      "logprobs": null,
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 154,
    "completion_tokens": 15,
    "total_tokens": 169,
    "prompt_tokens_details": {
      "cached_tokens": 0
    },
    "completion_tokens_details": {
      "reasoning_tokens": 0
    }
  },
  "system_fingerprint": null
}

What have you tried so far?

Youtube Tutorials
Chat GPT

Did you check FlutterFlow's Documentation for this topic?
Yes
2