inference.sh Install the belt CLI skill:
npx skills add belt-sh/cli
GPT-Image
Generate and edit images with OpenAI's GPT-Image-2.5 and GPT-Image-2 via inference.sh CLI.
Models
| Model | App ID | Pick it for |
|---|---|---|
| GPT-Image-2.5 Flare | openai/gpt-image-2-5-flare |
Default. Higher quality than GPT-Image-2 at 50% lower latency |
| GPT-Image-2.5 Sunburst | openai/gpt-image-2-5-sunburst |
Premium edits: keeps subject and composition, tighter control across multi-turn edits |
| GPT-Image-2 | openai/gpt-image-2 |
Previous generation |
All three share the same input schema. The 2.5 models add xhigh and max quality tiers.
Quick Start
Requires inference.sh CLI (
belt). Install instructions
belt login
belt app run openai/gpt-image-2-5-flare --input '{"prompt": "a cat astronaut floating in space"}'
Capabilities
Every GPT-Image app supports text-to-image generation, image editing with reference images, and mask-based inpainting through a single app.
| Feature | Description |
|---|---|
| Text-to-Image | Generate images from text prompts |
| Image Editing | Edit images using reference images |
| Inpainting | Mask-based editing of specific regions |
| Batch Generation | Generate up to 10 images at once |
| Multiple Formats | PNG, JPEG, WebP output |
| Transparent Background | Alpha-channel PNG/WebP output for stickers, icons, product cutouts |
| Flexible Resolution | Any size in 16px increments (256–3840), aspect ratio up to 3:1 |
Examples
Text-to-Image
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "professional product photo of sneakers on a white background, studio lighting",
"quality": "high"
}'
Multiple Images
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "minimalist logo design for a coffee shop",
"n": 4,
"quality": "medium"
}'
Image Editing with Reference
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "change the background to a beach at sunset",
"images": ["https://your-image.jpg"]
}'
Precise Edit with Sunburst
Sunburst is built to change only what you ask for and preserve the rest.
belt app run openai/gpt-image-2-5-sunburst --input '{
"prompt": "change the jacket to red leather, keep the person, pose and background unchanged",
"images": ["https://your-photo.jpg"],
"quality": "high"
}'
Maximum Detail
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "macro photo of a dragonfly wing, intricate veins, morning dew",
"quality": "max"
}'
Multi-Image Reference
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "combine these two characters into one scene",
"images": ["https://character1.jpg", "https://character2.jpg"]
}'
Inpainting with Mask
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "replace with a red sports car",
"images": ["https://street-scene.jpg"],
"mask": "https://car-mask.png"
}'
Transparent Background
Prompt for an isolated subject — describing a scene or backdrop makes the model draw one. Requires png (default) or webp output.
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "a single red apple with a green leaf, isolated subject",
"background": "transparent"
}'
Custom Resolution
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "wide cinematic landscape, mountains at golden hour",
"width": 1920,
"height": 1080,
"quality": "high"
}'
Fast Drafts
belt app run openai/gpt-image-2-5-flare --input '{
"prompt": "quick concept sketch of a robot",
"quality": "low"
}'
Pricing
Approximate price per 1024x1024 image. Flare and Sunburst cost the same.
| Quality | GPT-Image-2.5 | GPT-Image-2 |
|---|---|---|
| low | $0.006 | $0.006 |
| medium | $0.013 | $0.053 |
| high | $0.053 | $0.21 |
| xhigh | $0.094 | – |
| max | $0.21 | – |
Larger resolutions cost more. Edits add about $0.008 per reference image. See belt app get openai/gpt-image-2-5-flare for full pricing details.
Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
prompt |
string | required | Text prompt describing the image |
images |
array | - | Reference image(s) for editing |
mask |
string | - | Mask image for inpainting |
n |
integer | 1 | Number of images (1–10) |
quality |
string | auto | low, medium, high, xhigh, max (xhigh/max are 2.5 only) |
width |
integer | 1024 | Output width (256–3840, multiples of 16, ratio ≤ 3:1) |
height |
integer | 1024 | Output height (256–3840, multiples of 16, ratio ≤ 3:1) |
output_format |
string | png | png, jpeg, or webp |
output_compression |
integer | - | Compression level for jpeg/webp (0–100) |
background |
string | auto | auto, transparent, or opaque (transparent needs png/webp) |
Related Skills
# Full platform skill (all apps)
npx skills add inference-sh/skills@infsh-cli
# All image generation models
npx skills add inference-sh/skills@ai-image-generation
# FLUX models
npx skills add inference-sh/skills@flux-image
# Pruna P-Image (fast & economical)
npx skills add inference-sh/skills@p-image
Browse all image apps: belt app list --category image
Documentation
- Running Apps - How to run apps via CLI
- Streaming Results - Real-time progress updates