gpt-image-1 only, the token usage information for the image generation.{
"input_tokens": 0,
"total_tokens": 0,
"output_tokens": 0,
"output_tokens_details": {
"image_tokens": 0,
"text_tokens": 0
},
"input_tokens_details": {
"text_tokens": 0,
"image_tokens": 0
}
}