GPT Image 1.5 vs GPT Image 1 Mini

1. State-of-the-Art Image Generation

• Produces high-quality, detailed images optimized for realism, style control and prompt fidelity.
• Designed to handle complex visual scenes, compositions and lighting conditions.

2. Natively Multimodal Architecture

• Understands and reasons over both text and images as inputs.
• Ideal for workflows like editing based on reference images, expanding sketches or mockups and visual concept development.

3. Flexible Output Resolutions & Quality Levels

• Supports multiple resolutions including 1024x1024, 1024x1536 and 1536x1024.
• Offers three quality tiers (Low, Medium, High) to balance cost, speed and maximum detail.

4. Multiple Pricing Models

• Pay-per-token for multimodal input: text tokens and image tokens.
• Pay-per-image generation for final output: low, medium and high quality tiers.
• Enables businesses to balance cost and output needs.

5. Broad Use Cases

• Product photography and marketing assets.
• Illustration, concept art and creative ideation.
• UX/UI mockups.
• Style-guided image creation.
• Generating reference images for design or storytelling.

6. Supported Across Major API Endpoints

• Available via Chat Completions, Responses, Realtime, Assistants and Images (generations/edits) endpoints.
• Allows tight integration into automated creative pipelines or user-facing apps.

7. Simplified Model Behavior for Stability

• No streaming, function calling, structured outputs or fine-tuning; focused solely on high-quality image generation.

8. Consistent Results via Snapshots

• Supports snapshots for version locking to ensure long-term reproducibility.

9. Ideal For

• Designers, marketers and creatives.
• Product teams needing image assets.
• App builders integrating image generation workflows.
• Agencies producing visual content at scale.

1. Cost-Efficient Image Generation

• A budget-friendly version of GPT Image 1 designed for high-volume or cost-sensitive workflows.
• Offers strong visual generation quality at significantly reduced per-image prices.

2. Natively Multimodal Architecture

• Accepts both text and image inputs, enabling:
  • Image-to-image transformations
  • Visual editing based on reference photos
  • Enhanced control via mixed inputs
• Outputs high-quality images aligned with the prompt or reference.

3. Flexible Resolution & Quality Options

• Supports three quality tiers (Low, Medium, High).
• Available in multiple resolutions:
  • 1024x1024
  • 1024x1536
  • 1536x1024
• Allows users to choose between affordability and visual detail.

4. Practical for Real-World Applications Ideal for:

• Marketing visuals
• UI/UX mockups
• Concept art
• Prototyping & brainstorming
• Lightweight creative tools within SaaS platforms

5. Broad API Integration Works across all major endpoints:

• Chat Completions
• Responses
• Realtime
• Assistants
• Image generation & image edits
• Batch and embedding pipelines for more complex workflows.

6. Streamlined Feature Set for Simplicity

• No streaming, function calling, structured output, or fine-tuning.
• Focused exclusively on reliable, easy-to-use image generation.

7. Snapshot Support for Consistency

• Supports stable snapshots so developers can lock behavior and ensure reproducible outputs across deployments.