
GPT Image 1.5 vs GPT Image 1 API (2026)
Compare GPT Image 1.5 and GPT Image 1 across image quality, speed, editing workflows, and practical API usage for 2026 projects.
2026
Powered by OpenAI, GPT Image 1.5 is a powerful image generation model that significantly outperforms its predecessors, delivering up to 4× faster generation and higher image quality. Get started with the GPT Image 1.5 API today!

OpenAI GPT Image 1.5 for high-quality image generation
Select the model for content generation.
A text description of the desired image(s).

This shows preset sample previews. Sign in and click 'Generate image' to create your own.
GPT-Image-1.5 API delivers exceptional image quality with fine details and accurate representation across diverse creative domains.
Create any image from your description

A person sitting at a small outdoor street food stall at dusk, warm ambient lighting, steam rising from freshly cooked food, casual candid photography, shallow depth of field, cinematic realism.

A single ceramic bowl of noodles placed on a wooden table, neutral background, soft studio lighting, clean composition, realistic textures, product photography style.

A lively night food market with multiple stalls, colorful signs, people walking and chatting, vibrant atmosphere, wide-angle shot, realistic urban photography.
Edit your images with precision


Prompt: Transform this image into a Studio Ghibli-inspired illustration: soft hand-painted textures, gentle pastel colors, warm glowing lights, whimsical atmosphere, expressive yet subtle facial features, dreamy cinematic mood.
GPT-Image-1.5 excels in producing T2I and I2I generations with natural lighting with accurate materials and rich color rendering.
GPT Image 1.5 achieves up to 4x faster generation at higher quality compared to its predecessor model, GPT Image 1. Ideal for rapid and time sensitive workflows.
Our ChatGPT Image API delivers cinematic level edits, maintaining character consistency, suitable for multi-step workflows.
Developed for crisp lettering for handling denser and smaller text, our ChatGPT Image 1.5 API produces consistent layout and strong constrast inside images.
Our GPT 1.5 API excels in creating structured visuals such as infographics, diagrams and multi-panel compositions.
Ideal for marketing and brand work, our GPT-Image-1.5 API excels in T2I and I2I tasks for branded design systems and fine art styles with strong element preservation.
GPT Image 1.5 can accurately depict objects, environments and scenarios through its strong real-world knowledge and reasoning.
GPT Image 1.5 excels in I2I task, specifically in adding, subtracting, combining, blneding and transposing.
Outperformed existing image AI generation models on an internal Microsoft dataset in prompt alignment and infographic tasks.
| Resolution | Low Quality | Medium Quality | High Quality |
|---|---|---|---|
| 1024×1024 | ~$0.011 | ~$0.042 | ~$0.167 |
| 1024×1536 | ~$0.016 | ~$0.063 | ~$0.25 |
| 1536×1024 | ~$0.016 | ~$0.063 | ~$0.25 |
Check out our blog for related contents!

Compare GPT Image 1.5 and GPT Image 1 across image quality, speed, editing workflows, and practical API usage for 2026 projects.
2026
Developed by OpenAI, GPT Image 1.5 is a powerful image generation model in the ChatGPT Image model family, a major upgrade from the predecessor, GPT Image 1. At PiAPI, we provide GPT-Image-1.5 API, perfect for developers and content creators.
GPT-Image-1.5 API supports diverse artistic styles, from photorealistic scenes to artistic renderings, enabling creative freedom across various visual domains.
Absolutely! ChatGPT Image API is designed for advanced prompt understanding, including complex instructions, multiple objects, detailed scenes, and stylistic requests, making it suitable for professional use cases.
GPT-Image-1.5 API supports standard image formats including JPG, PNG, WEBP and JPEG, with high-resolution output capabilities.
When you sign up with us, you will get free credits to try our API services in our workspace.
Our GPT Image 1.5 API costs $0.02/image.
Please refer to our NSFW policy for more information and follow the guidelines.
Yes, generated ChatGPT images from our GPT 1.5 API can be used for commercial purposes, enabling creation and distribution of generated content for business applications.
No, we do not offer refunds. But when you first sign up for an account on PiAPI's Workspace, you will be given free credits to try our API (specifically the "Pay-as-you-go" service) before making top-ups!
Please email us at contact@piapi.ai - we'd love to talk more regarding our product offering!