GPT Image 1.5 API

Turn text into commercial-grade photography. The GPT Image 1.5 model offers industry-leading prompt adherence and visual coherence for developers.

Prompt

A beautiful colorful sunset over the ocean

Parameters

size

1024x1024

quality

auto

Estimated Cost (per image)

1 Credits

Total = Base Price × Count (n)

Sample Result

No sample available

Prompt

42 (suggested: 2,000)

Input Images

Upload reference images

Click to upload or drag and drop

Supported formats: JPG, JPEG, PNG, WEBP
Maximum file size: 10MB; Maximum files: 10

Size

Quality

Click Generate to see preview

History

Max 20 items

0 running · 0 completed

Your generation history will appear here

GPT Image 1.5 API: Visual Intelligence Reimagined

Integrate the sharpest text-to-image capabilities into your software. From complex scene composition to legible text rendering, GPT Image 1.5 sets the new standard for automated content creation.

What Can You Build with GPT Image 1.5?

Dynamic Ad Creative Generation

Scale your marketing campaigns effortlessly. GPT Image 1.5 API enables platforms to auto-generate hundreds of unique ad variations tailored to specific user segments, significantly boosting CTR without increasing design headcount.

See Marketing Use Cases

E-Commerce Virtual Photography

Transform product listings with context-aware visuals. Instead of expensive studio shoots, use the model to place products in hyper-realistic lifestyle backgrounds, helping customers visualize items in their own lives.

View E-Commerce Demo

Rapid Game Asset Prototyping

Accelerate your development pipeline. Game studios use GPT Image 1.5 to generate concept art, textures, and character avatars in seconds, moving from ideation to production faster than ever before.

Explore Gaming Assets

Why Choose GPT Image 1.5 API?

Accessing this model via evolink.ai combines the raw creative power of OpenAI's technology with the infrastructure stability your business needs.

Unmatched Semantic Accuracy

GPT Image 1.5 excels where others fail. It understands complex, multi-layered prompts, ensuring that specific details—like lighting direction, object placement, and mood—are rendered exactly as described.

Legible Text Rendering

A major breakthrough in AI imagery. Unlike older models that produce gibberish, GPT Image 1.5 can accurately render short phrases and signs within the image, making it perfect for poster and cover design.

Enterprise-Ready Uptime

Powered by evolink.ai's robust infrastructure, accessing this model means you get high concurrency support and 99.9% uptime, shielding your app from the volatility often found in public research APIs.

How to Integrate GPT Image 1.5

Three steps to add world-class image generation to your tech stack.

Get Your Credentials

Sign up at evolink.ai to receive your secure API key. This single key grants you authenticated access to the GPT Image 1.5 model pipeline.

Construct Your Payload

Define your image parameters—prompt, aspect ratio, and style—in a simple JSON request. Our developer-friendly docs make configuration intuitive.

Retrieve & Display

Send the request and receive a high-fidelity image URL in seconds. Our optimized delivery network ensures low latency for real-time user applications.

Read Documentation

Key Capabilities of GPT Image 1.5

A deep dive into the technical strengths of the model accessible via our platform.

Quality

Photorealistic Detail

The model utilizes advanced diffusion techniques to achieve near-perfect lighting, texture, and shadow, making generated photos indistinguishable from real photography.

Versatility

Styles & Aesthetics

From 3D render to oil painting, anime to line art. GPT Image 1.5 supports a vast vocabulary of artistic styles, strictly adhering to your brand's visual identity.

Resolution

High Resolution Support

Generate native 1024x1024 visuals or leverage our integrated upscaling to deliver 4K production-ready assets suitable for print and large displays.

Security

Safety & Moderation

Built-in safety guardrails prevent the generation of harmful content, ensuring the API is safe for deployment in public-facing commercial applications.

Intelligence

Prompt Expansion

The API can automatically enhance simple user prompts into detailed descriptions, ensuring high-quality outputs even from vague inputs.

Legal

Commercial Licensing

Images generated via the GPT Image 1.5 API come with full commercial usage rights, allowing you to monetize the content without legal concerns.

GPT Image 1.5 API vs. Competitors

See how this model stacks up against other market solutions available.

Model	Duration	Resolution	Price	Strength
GPT Image 1.5 API (via evolink)	N/A	Up to 4K (Upscaled)	$0.015 / image	Superior semantic accuracy, enterprise stability, unified SDK support.
Nano Banana Pro	N/A	1024x1024 Max	$0.05 / image	Fast inference speeds, but suffers from low coherence and poor prompt adherence.
SeeDream 4.5	N/A	2048x2048	$0.04 / image	High artistic style quality, but high latency (10s+) makes it unsuitable for real-time apps.

Frequently Asked Questions

Everything you need to know about the product and billing.

The GPT Image 1.5 API is a cutting-edge text-to-image generation service that leverages advanced OpenAI-based technology (similar to the DALL-E series) to create high-fidelity visuals from text descriptions. It is known for its superior understanding of complex instructions and ability to render text within images. evolink.ai integrates this powerful model into our platform, providing developers with a stable, high-performance interface to build commercial applications without managing the underlying model infrastructure directly.

Pricing is based on a pay-per-use model, ensuring you only pay for the images you successfully generate. Costs typically vary based on the resolution (standard vs. HD) and quality settings chosen. By accessing it through evolink.ai, you benefit from a consolidated billing system that allows you to manage costs effectively, with volume discounts available for enterprise-scale applications processing millions of images per month.

Yes, absolutely. You retain full ownership and commercial rights to all images generated using the GPT Image 1.5 API. This means you can use the artwork for digital ads, physical merchandise, game assets, and website content without paying royalties. evolink.ai acts as the conduit for generation and claims no copyright over your specific outputs.

The API natively generates images in square (1024x1024), portrait, and landscape aspect ratios. Through evolink.ai's enhanced pipeline, you can automatically request outputs in PNG, JPG, or WebP formats. We also offer upscaling options that can boost the final image resolution up to 4K, ensuring the content is crisp enough for professional printing or high-DPI screens.

Speed is a priority for user experience. Standard generations typically complete within a few seconds. For applications requiring real-time feedback, our infrastructure optimizes routing to ensure the lowest possible latency. Compared to standard research previews, the commercial integration via evolink.ai is optimized for production environments where response time is critical.

Direct provider APIs often have strict daily or minute-based limits. However, accessing GPT Image 1.5 via evolink.ai significantly increases these thresholds. We offer high-concurrency plans tailored for enterprises, allowing your application to handle traffic spikes and generate thousands of images simultaneously without hitting rate limits.

GPT Image 1.5 is industry-leading in 'prompt adherence.' This means if you ask for 'a red cat sitting on a blue chair holding a sign that says Hello,' it will capture all those specific elements accurately. This reduces the need for 'prompt engineering' or repeated attempts, saving you money and improving the user experience for your customers.

Yes. The underlying model includes robust safety training to reject requests for violent, adult, or hateful content. Additionally, evolink.ai wraps this with configurable moderation layers, giving you peace of mind that the content generated on your platform remains brand-safe and compliant with global content regulations.

API Reference

Select endpoint

Authentication

All APIs require Bearer Token authentication.

Header

Authorization: 
Bearer YOUR_API_KEY

Get API Key

POST

/v1/images/generations

Generate Image

Create an image generation task using text prompts or reference images. Supports text-to-image, image-to-image, and image editing modes.

Asynchronous processing mode, use the returned task ID to query status.

Generated image links are valid for 24 hours, please save them promptly.

Request Parameters

modelstringRequiredDefault: gpt-image-1.5-lite

Image generation model name.

Value	Description
gpt-image-1.5-lite	GPT Image 1.5 Lite model

Examplegpt-image-1.5-lite

promptstringRequired

Prompt describing the image to be generated or how to edit the input image.

Notes

Limited to 2000 tokens

ExampleA beautiful colorful sunset over the ocean

sizestringOptionalDefault: 1024x1024

Size of generated image, supports two formats.

Value	Description
1:1	Square aspect ratio
3:4	Portrait aspect ratio
4:3	Landscape aspect ratio
1024x1024	Square (default)
1024x1536	Portrait
1536x1024	Landscape

Notes

Aspect ratio format: 1:1, 3:4, 4:3
Pixel format: 1024x1024, 1024x1536, 1536x1024

Example1024x1024

qualitystringOptionalDefault: auto

Quality of the generated image.

Value	Description
low	Low quality, faster generation
medium	Medium quality
high	High quality, slower generation
auto	Automatic selection (default)

Exampleauto

image_urlsarrayOptional

Reference image URL list for image-to-image and image editing features.

Notes

Supports 1-16 images per request
Max size: 50MB per image
Formats: .jpeg, .jpg, .png, .webp
URLs must be directly accessible by the server

Examplehttps://example.com/image1.png

nintegerOptionalDefault: 1

Number of images to generate.

Value	Description
1	Currently only supports 1

Example1

Request Example

{
  "model": "gpt-image-1.5-lite",
  "prompt": "A beautiful colorful sunset over the ocean",
  "size": "1024x1024",
  "quality": "auto"
}

Response Example

{
  "created": 1757156493,
  "id": "task-unified-1757156493-imcg5zqt",
  "model": "gpt-image-1.5-lite",
  "object": "image.generation.task",
  "progress": 0,
  "status": "pending",
  "task_info": {
    "can_cancel": true,
    "estimated_time": 100
  },
  "type": "image",
  "usage": {
    "billing_rule": "per_call",
    "credits_reserved": 2.4,
    "user_group": "default"
  }
}