Vs gpt-image-2: sharper detail/fidelity/multi-turn editing; latency down up to ~50%; ChatGPT includes Sketch/templates/on-image comments; API also has Sunburst (finer edits, slower)
Availability
ChatGPT / Work / Codex; API gpt-image-2.5-flare (default) and gpt-image-2.5-sunburst