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Introducing ChatGPT Images 2.5

Blog · Watch/Read · (gathered 2026-09-10)

  • Simon Willison introduces OpenAI’s new ChatGPT Images 2.5, emphasizing its advancements in image generation capabilities.
  • The new release features improved multi-turn instruction-following, faster responses, and better preservation of subjects in reference photos.
  • Two new API model IDs are available: gpt-image-2.5-sunburst for workflows requiring editing precision, and gpt-image-2.5-flare for fast, high-quality everyday image generation.
  • Willison updated his openai_image.py CLI tool to support passing reference images, demonstrating its use with gpt-image-2.5-sunburst for precise image manipulation.