About this lesson
The settings under the prompt decide how many images you get, their size, how much effort goes into each one and whether they have a background. This lesson changes them one at a time on GPT Image 2.5 Sunburst to make a transparent cutout of the tank hero from Generate images, then switches to Ideogram 4.5 to show how the settings change with the model. The models and prices in this lesson are as of November 2026.
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- Each image setting, its API parameter, its usual range, and which current models expose it.
- The panel shows only what the selected model accepts; its Parameters tab is the live source.
- Count, size, resolution and quality change the price; background, seed and magic prompt do not.
Step by step with an agent, through the Scenario MCP (6 steps)Hide the steps
Connect the Scenario MCP
Connect your agent and sign in once at mcp.scenario.com. Then tell it which Scenario team and project to use, so every file lands there.
Give the agent the files
Nothing to upload: the cutout is made from the prompt alone, with no reference.
Brief the agent: the cutout
The setting and the prompt both ask for the cutout.
PromptUse GPT Image 2.5 Sunburst (model_openai-gpt-image-2-5-sunburst): width 1536, height 2048, quality "medium", background "transparent", numOutputs 1. No reference. Quote the cost with a dry run first and wait for my go. Prompt, word for word: Character art for VOLTARIS, an invented free-to-play hero shooter: the tank hero, a broad-shouldered bearded man with dark skin and a short black topknot, in riveted burnt-orange armor with cyan light strips. On the left side of the picture, a huge hexagonal energy shield glowing amber, nearly as tall as he is, held in his right hand with its bottom edge on the ground. He stands upright, full body, front three-quarter view, looking at the camera with a calm, confident expression. A cutout on a transparent background, no scenery, no floor, no shadow. The whole figure and the whole shield in frame with space around them, eye-level camera. No text, no logos, no watermark. Style: stylized 3D at the standard of the best free-to-play hero shooters: bold readable silhouettes, appealing expressive faces, hand-tuned stylized PBR (painted metal, soft cloth, rubber), saturated but controlled palette, cinematic key light with a cool rim.Compare another model's settings
Reading a schema is free. It shows what the panel would show for Ideogram 4.5: no background, an aspect ratio and resolution instead of pixels, Magic Prompt and Seed.
PromptRead the parameters of Ideogram 4.5 (model_ideogram-v4-5) with model_schema_get and list them next to those of GPT Image 2.5 Sunburst, with which ones move the cost. Don't run anything.Check the cutout
Accept when it's the same character as the full scene, the whole figure and shield are in frame, and the edges hold on the topknot and the glowing shield rim. Reject a floor, shadow or scene left behind, cut-off parts or halos.
PromptDownload the cutout and check that the background is really transparent and that there's no floor, shadow or scenery. Zoom on the topknot and the shield rim and tell me if the edges show halos. If they do, tell me before you run anything else.File the result and report
PromptAdd the cutout to a collection called "VOLTARIS tank hero" and report the model, the settings, its asset ID and the cost spent.
Step by step in the web app (8 steps)Hide the steps
Image Count
Create › Images › GPT Image 2.5 Sunburst, Settings: drag Image Count to 1. The cost on Generate goes down, since you pay per image.
Dimensions
Open the Dimensions presets and pick 3:4 (1536x2048), a portrait frame for a standing character.
Quality
Step Quality to Medium: low to test ideas, medium for most work, high and above for finals and fine detail.
Background
Set Background to Transparent for a real cutout. It doesn't change the cost and works on GPT Image 2.5 Flare and Sunburst.
Say it in the prompt too
Swap the landing-platform sentence for one that asks for a cutout, or the model still draws a scene. Click Generate.
PromptCharacter art for VOLTARIS, an invented free-to-play hero shooter: the tank hero, a broad-shouldered bearded man with dark skin and a short black topknot, in riveted burnt-orange armor with cyan light strips. On the left side of the picture, a huge hexagonal energy shield glowing amber, nearly as tall as he is, held in his right hand with its bottom edge on the ground. He stands upright, full body, front three-quarter view, looking at the camera with a calm, confident expression. A cutout on a transparent background, no scenery, no floor, no shadow. The whole figure and the whole shield in frame with space around them, eye-level camera. No text, no logos, no watermark. Style: stylized 3D at the standard of the best free-to-play hero shooters: bold readable silhouettes, appealing expressive faces, hand-tuned stylized PBR (painted metal, soft cloth, rubber), saturated but controlled palette, cinematic key light with a cool rim.Switch to another model
Pick Ideogram 4.5: Aspect Ratio 3:4 and Resolution 2K replace Dimensions, Quality runs from very low to high, there's no Background, and Magic Prompt goes Off to keep your words.
Seed
Leave Seed empty for a new start each run, or type a number to keep it fixed and change one thing at a time.
Check the cutout
Open the cutout from step 5. Info should read Image Count 1, Width 1,536, Height 2,048, Quality Medium, Background Transparent; zoom in on the topknot and the shield rim for clean edges.


