GPT Image 2.5 prompt guide
GPT Image 2.5 is OpenAI’s image model before 2.6, strong on text in the picture. Write it like a brief: what the image is for, the scene, the exact text, then what must not change.
What GPT Image 2.5 takes
- Takes a prompt and up to 4 reference images.
- Aspect ratios: 1:1, 3:4, 4:3, 4:5, 9:16, 16:9.
- Settings: 1K · Low; 1K · Medium; 1K · High; 1K · XHigh; 1K · Max; 2K · Low; 2K · Medium; 2K · High; 2K · XHigh; 2K · Max; 4K · Low; 4K · Medium; 4K · High; 4K · XHigh; 4K · Max.
- From 4.25 credits per image.
The order to write a prompt in
- What the image is for: an ad, a poster, a menu, a product shot. It sets how polished the result looks.
- The scene and the subject: setting, materials, light, framing and the medium (photo, illustration, 3D).
- The text, word for word in quotes, with its style, colour and place: a bold white headline across the top.
- The limits: what must stay as it is, and "no extra text or logos".
Tips
- Put every word that should appear in quotes and add "exactly as written, no extra characters". Spell an unusual brand name letter by letter.
- Say where each piece of text goes and how it looks: the size, the weight, the colour and the alignment.
- For an edit, name one change, then what to keep: "keep everything else the same". Repeat the keep list on every new edit, so the picture does not drift.
- With several images, refer to each by its order and say how they combine: "put the bottle from the first image on the table in the second image, matching its light, perspective and shadows". Up to 4 images.
- Pick the quality in the settings, not in the prompt: Low and Medium for drafts, High for most text, XHigh or Max for small, dense text. At Low and Medium 2.5 costs less than 2.6, which makes it the one for drafts.
Example prompts
A concert poster for a jazz night. A saxophone player silhouetted against a deep blue spotlight, smoky club atmosphere. At the top, large bold cream letters: "BLUE HOUR SESSIONS". At the bottom, smaller: "FRIDAY 9 PM · THE CELLAR". Text exactly as written, no extra characters or logos.
A photorealistic product shot of a matte green coffee bag standing on a wooden counter, morning light from a window. The front label reads "MOUNTAIN ROAST" in a clean serif font, with "Single origin · 250 g" below it. No other text.
Change the sign above the shop door to read "OPEN LATE" in red neon letters. Keep everything else the same: the building, the people, the light and the camera angle.