Getting 400 error trying to generate image with Dalle-3?

API
1

I have used the Dalle-2 API for months to generate images without fail. Today I made my first attempt to use Dalle-3. Unfortunately I am geting 400 BAD_REQUEST errors every time. Below is the error object I am getting from the Axios POST request, with my request object embedded.

Can someone help me figure this out?

{
  "message": "Request failed with status code 400",
  "name": "Error",
  "stack": "Error: Request failed with status code 400\n")",
  "config": {
    "url": "https://api.openai.com/v1/images/generations",
    "method": "post",
    "data": "{\"model\":\"dalle-e-3\",\"prompt\":\"ducks\",\"n\":1,\"size\":\"1024x1024\",\"response_format\":\"b64_json\"}",
    "headers": {
      "Accept": "application/json, text/plain, */*",
      "Content-Type": "application/json",
      "Authorization": "Bearer <my API key>",
      "User-Agent": "axios/0.19.2",
      "Content-Length": 92
    },
    "transformRequest": [
      null
    ],
    "transformResponse": [
      null
    ],
    "timeout": 0,
    "xsrfCookieName": "XSRF-TOKEN",
    "xsrfHeaderName": "X-XSRF-TOKEN",
    "maxContentLength": -1
  }
}
2

Are you using the latest library? cURL?

Check out the Images API docs and DALLE3 Cookbook page if you havenā€™t yet.

3

Hi Paul. Iā€™m using the axios fetch library from my Node.js back-end server. It worked fine with Dalle-2:

       // For now, Dalle-3 only allows one image to be created at a time.
        if (theNumberOfImagesToMake !== 1)
            throw new Error(`${errPrefix}Dalle-3 only generates one image at a time.  Use parallel calls to this function (see generateImagesWithDalle3())`);

        const Dalle3RequestObj =
            {
                model: theModel,
                prompt: usePrompt,
                n: theNumberOfImagesToMake, // Number of images to generate. Must be set to 1 for now.
                size: `${theImageSize}x${theImageSize}`,

                // NOTE!!: The response format 'b64_json' is oddly named.
                //  It is absolutely not a JSON object or an object at all.
                //  It's just the name of a property that you will find in each
                //  result element in the results array that contains a PNG
                //  image in base 64 encoded string format.
                response_format: 'b64_json',
            }

        try {
            if (bVerbose)
                console.info('generate-images', `Making generate image request to Dalle-3 with prompt: ${Dalle3RequestObj.prompt}`);

            const responseObj = await axios.post(
                URL_OPENAI_DALLE_3_ENDPOINT,
                Dalle3RequestObj,
                {
                    headers: {
                        "Content-Type": "application/json",
                        "Authorization": `Bearer ${apiKey}`
                    },
                }
            );

Yes I did look at those pages you linked me. Thanks. I didnā€™t see anything different than what I was doing, except for the fact that I have to do 1 image at a time.

4

In your code, you have specified the model as "dalle-e-3", but according to the documentation, the correct parameter should be "dall-e-3" (without the extra ā€˜eā€™)

1 Like
5

Thanks Paul! That was it. Is there any way to get more detailed information about what causes a 400 error? Perhaps something like ā€œinvalid model nameā€ in this case?

1 Like
6

Well, 400 in general is ā€œbad request,ā€ but I missed the typo on my first glance. With a 400 error, though, you want to look at what youā€™re sending - parameters. Glad you got it sorted.

1 Like