workflow-templates-broken-zap-2026-06-08/site/knowledge/models/gpt-image-1.md

GPT-Image-1

GPT-Image-1 is OpenAI's natively multimodal image generation model, capable of generating and editing images from text and image inputs. It is accessed in Hanzo Studio through API nodes.

Model Variants

GPT-Image-1.5

• Latest and most advanced GPT Image model
• Best overall quality with superior instruction following
• High input fidelity for the first 5 input images
• Supports generate vs. edit action control
• Multi-turn editing via the Responses API

GPT-Image-1

• Production-grade image generation and editing
• High input fidelity for the first input image
• Supports up to 16 input images for editing
• Up to 10 images per generation request

GPT-Image-1-Mini

• Cost-effective variant for lower quality requirements
• Same API surface as GPT-Image-1
• Suitable for rapid prototyping and high-volume workloads

Key Features

• Superior text rendering in generated images
• Real-world knowledge for accurate depictions
• Transparent background support (PNG and WebP)
• Mask-based inpainting with prompt guidance
• Multi-image editing: combine up to 16 reference images
• Streaming partial image output during generation
• Content moderation with adjustable strictness

Hardware Requirements

• No local GPU required — cloud API service via OpenAI
• Accessed through Hanzo Studio API nodes
• Requires OpenAI API key and organization verification

Common Use Cases

• Text-to-image generation with detailed prompts
• Image editing and compositing from multiple references
• Product photography and mockup generation
• Inpainting with mask-guided editing
• Transparent asset generation (stickers, logos, icons)
• Multi-turn iterative image refinement

Key Parameters

• prompt: Text description up to 32,000 characters
• size: 1024x1024, 1536x1024 (landscape), 1024x1536 (portrait), or auto
• quality: low, medium, high, or auto (affects cost and detail)
• n: Number of images to generate (1-10)
• background: transparent, opaque, or auto
• output_format: png, jpeg, or webp
• moderation: auto (default) or low (less restrictive)
• input_fidelity: low (default) or high for preserving input image details