I just checked with an image I created using GPT Image 2.5 (Flare) over the API and I see this:
"softwareAgent": {
"name": "gpt-image",
"version": "2.0"
}
So looks like the metadata hasn’t been updated. Or I’m not using 2.5 even on the API when I explicitly request it. I can try Sunburst and see?