Install the belt CLI skill: npx skills add belt-sh/cli

GPT-Image-2

Generate and edit images with OpenAI's GPT-Image-2 via inference.sh CLI.

Quick Start

Requires inference.sh CLI (belt). Install instructions

belt login

belt app run openai/gpt-image-2 --input '{"prompt": "a cat astronaut floating in space"}'

Capabilities

GPT-Image-2 supports text-to-image generation, image editing with reference images, and mask-based inpainting — all through a single model.

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
Flexible Resolution	Any size in 32px increments (256–4096)

Examples

Text-to-Image

belt app run openai/gpt-image-2 --input '{
  "prompt": "professional product photo of sneakers on a white background, studio lighting",
  "quality": "high"
}'

Multiple Images

belt app run openai/gpt-image-2 --input '{
  "prompt": "minimalist logo design for a coffee shop",
  "n": 4,
  "quality": "medium"
}'

Image Editing with Reference

belt app run openai/gpt-image-2 --input '{
  "prompt": "change the background to a beach at sunset",
  "images": ["https://your-image.jpg"]
}'

Multi-Image Reference

belt app run openai/gpt-image-2 --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 --input '{
  "prompt": "replace with a red sports car",
  "images": ["https://street-scene.jpg"],
  "mask": "https://car-mask.png"
}'

Custom Resolution

belt app run openai/gpt-image-2 --input '{
  "prompt": "wide cinematic landscape, mountains at golden hour",
  "width": 1920,
  "height": 1080,
  "quality": "high"
}'

Fast Drafts

belt app run openai/gpt-image-2 --input '{
  "prompt": "quick concept sketch of a robot",
  "quality": "low"
}'

Pricing

Quality	~Price per Image
Low	$0.006
Medium	$0.024
High	$0.21

Larger resolutions cost more. See belt app get openai/gpt-image-2 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	-	low, medium, or high
width	integer	-	Output width (256–4096, multiples of 32)
height	integer	-	Output height (256–4096, multiples of 32)
output_format	string	png	png, jpeg, or webp
output_compression	integer	-	Compression level for jpeg/webp (0–100)

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