Image_url for gpt-4o api giving error "expected an object, but got a string instead.",

API Bugs
,
1

I ran the exact code given in the documentation for vision api.

But I got the below error. Same applies to gpt-4-turbo model. Am I missing something?

openai.BadRequestError: Error code: 400 - {'error': {'message': "Invalid type for 'messages[0].content[1].image_url': expected an object, but got a string instead.", 'type': 'invalid_request_error', 'param': 'messages[0].content[1].image_url', 'code': 'invalid_type'}}

Here is the code:


response = client.chat.completions.create(
    model="gpt-4o",
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "text", "text": "What's in this image?"},
                {
                    "type": "image_url",
                    "image_url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
                },
            ],
        }
    ],
    max_tokens=300,
)

print(response.choices[0])
2 Likes
2

Your code appears to be missing the object structure under the “image_url” key.
The correct format should look like this:

response = client.chat.completions.create(
    model="gpt-4o",
    messages=[
        {
            "role": "user",
            "content": [
                {"type": "text", "text": "What’s in this image?"},
                {
                    "type": "image_url",
                    "image_url": {
                        "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
                        "detail": "high"
                    },
                },
            ],
        }
    ],
    max_tokens=300,
)
print(response.choices[0].message.content)

The “detail” key can also be set to “low,” but it appears it cannot be omitted.

I often make this mistake too, and it can be a bit confusing.
I hope this helps you even a little🙂

3 Likes
4

Thank you! that works.
But I ran into a new problem when using AWS S3 presigned URL which gave the same error. will explore further.

6

I get the same error when using s3 resigned URL with gpt-4o or gpt-4-turbo. No error with gpt-4-vision-preview. OP, have you found a solution?

7

Hi @ebobr , For me, the problem got solved when I did not include max_tokens in the request. But this is not an actual solution. Its a workaround we found. The problem with S3 bucket URLs still exist.

1 Like
8

J’ai eu la meme erreur. La documentation de l’api est erronĂ©e , elle correspond au model gpt-4-vision-preview :
from openai import OpenAI

client = OpenAI()

response = client.chat.completions.create(
model=“gpt-4-turbo”,
messages=[
{
“role”: “user”,
“content”: [
{“type”: “text”, “text”: “What’s in this image?”},
{
“type”: “image_url”,
“image_url”: “https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg”,
},
],
}
],
max_tokens=300,
)

print(response.choices[0])

9

Yes, it seems that the documentation isn’t always correct. Please refer to the method I mentioned above.

10

Le format des données renvoyé ne correspond plus à du json, voici un autre extrait de la documentation openai:

from openai import OpenAI
client = OpenAI()

audio_file = open(“speech.mp3”, “rb”)
transcript = client.audio.transcriptions.create(
model=“whisper-1”,
file=audio_file
)
{
“text”: “Imagine the wildest idea that you’ve ever had, and you’re curious about how it might scale to something that’s a 100, a 1,000 times bigger. This is a place where you can get to do that.”
}
Pour accĂ©der Ă  la rĂ©ponse, auparavant on Ă©crivait transcript[‘text’] (comme pour un dictionnaire) mais maintenant il faut Ă©crire transcript.text : cela correspond plutot Ă  l’attribut d’un objet d’une classe, bref on a rĂ©cupĂšre un objet et non du json 

J’ai l’impression que lors de la derniĂšre grosse mise Ă  jour d’openai l’annĂ©e derniĂšre , avec le passage de l’écriture du style openai.Audio.translate Ă  client.audio.transcriptions.create , la mise Ă  jour de la documentation n’a pas suivie et a fait un mixte des deux 


11

this solution save my day using GPT-4o , plus converting max_tokens to integer. Thank you

2 Likes
12

Thanks a bunch. Works like a charm. They should really updated the documentation over here:
https://platform.openai.com/docs/api-reference/chat/create

13

I’m not sure if you took a look at OpenAI’s GitHub sample, but what you’re suggesting doesn’t seem to be correct:

14

There are multiple methods to pass images to vision models, some support depending on which model you are using, and no grid of which model has which API message methods.

15

I apologize, my explanation was not accurate


It should have been stated that there needs to be a ‘url’ key within the object corresponding to the ‘image_url’ key, and this ‘url’ key should contain the actual URL.

By doing this, it will function correctly.

response = client.chat.completions.create(
  model="gpt-4o",
  messages=[
    {
      "role": "user",
      "content": [
        {"type": "text", "text": "What’s in this image?"},
        {
            "type": "image_url",
            "image_url": {
                "url": "https://upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Gfp-wisconsin-madison-the-nature-boardwalk.jpg/2560px-Gfp-wisconsin-madison-the-nature-boardwalk.jpg",
            },
        },
      ],
    }
  ],
  max_tokens=300,
)

print(response.choices[0])

The ‘detail’ key is not necessarily required, and if omitted, it defaults to ‘auto’, letting the model decide whether to set it to ‘low’ or ‘high’.

Sorry for inaccurate explanation