The image size must be greater than zero and cannot exceed 20971520 bytes.

The 400 status error in the Azure OpenAI API, specifically related to the image size, could be due to several reasons:

Image Size Limitations

• The image size exceeds the maximum allowed limit of 20971520 bytes (20MB). Even if the base64 encoded file is within this limit, the original file size might be the factor considered.

Data Payload Size

• The data payload in the request, which includes the image, may be too large and exceed the maximum size allowed by the OpenAI API, leading to the server rejecting the request.

Incorrect Request Configuration

• There might be an issue with the request configuration, such as incorrect headers or an incorrect base URL, which could result in the server not being able to process the request properly.

Content Filter and Policy Violations

• The image or the request might be triggering content filters or violating Azure OpenAI's content management policies, which could cause the request to be filtered out.