models/OpenAI/GPT Image 1.5

OpenAI

GPT Image 1.5

image

OpenAI's image generation model that creates and edits images from text prompts, supporting multiple quality levels and output sizes.

MODALITIES

image

PER IMAGE

$0.0000

RELEASED

2026-05-22

GPT Image 1.5 (openai/gpt-image-1.5) is a image model from OpenAI, released 2026-05-22. Pricing via AIgateway: $0.0000 per image. Call it via https://api.aigateway.sh/v1/images/generations — set model="openai/gpt-image-1.5". Best for: Marketing assets, Product mockups, Concept art.

model · openai/gpt-image-1.5

Use this model

model: openai/gpt-image-1.5

curl https://api.aigateway.sh/v1/images/generations \
  -H "Authorization: Bearer $AIGATEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-image-1.5","prompt":"a serene cyberpunk city at dusk"}'

curl https://api.aigateway.sh/v1/images/generations \ -H "Authorization: Bearer $AIGATEWAY_API_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"openai/gpt-image-1.5","prompt":"a cyberpunk cat"}'

Capabilities

Strengths

Text-to-image generation
Creative control

Use cases

Marketing assetsProduct mockupsConcept art

Pricing

Per image$0.0000

You pay pass-through · 5% applied at credit top-up, not per-call.

See API example →Compare API reference See usage ranking →

Collections

More image models →More from OpenAI →Frontier models →Free-tier models →

API schema

Call GPT Image 1.5 from any OpenAI SDK

POST https://api.aigateway.sh/v1/images/generations·Content-Type: application/json·Auth: Bearer sk-aig-...

Request body

json

{
  "model": "openai/gpt-image-1.5",
  "prompt": "A cyberpunk cat at sunset, cinematic lighting",
  "n": 1,
  "size": "1024x1024",
  "response_format": "url"   // or "b64_json"
}

Response

json

{
  "created": 1776947082,
  "data": [
    { "url": "https://media.aigateway.sh/img/abc123.png" }
    // or { "b64_json": "iVBORw0KGgoAAAANSUhEU..." }
  ]
}

Quickstart

from openai import OpenAI
client = OpenAI(base_url="https://api.aigateway.sh/v1", api_key="sk-aig-...")

r = client.images.generate(
    model="openai/gpt-image-1.5",
    prompt="a cyberpunk cat at sunset",
    size="1024x1024",
)
print(r.data[0].url)

Errors

401authentication_errorInvalid or missing API key

402insufficient_creditsWallet empty (PAYG only)

404not_foundUnknown model or endpoint

429rate_limit_errorOver per-minute limit — see Retry-After header

500server_errorUpstream provider failed (retryable)

503service_unavailableUpstream saturated (retryable)

Full docs →API reference →OpenAPI spec →llms.txt →

Frequently asked questions

What is GPT Image 1.5?

OpenAI's image generation model that creates and edits images from text prompts, supporting multiple quality levels and output sizes. It is a image model from OpenAI, accessible via AIgateway's OpenAI-compatible API at slug openai/gpt-image-1.5.

How much does GPT Image 1.5 cost via AIgateway?

$0.0000 per image. Pass-through plus a 5% platform fee applied at top-up.

How do I call GPT Image 1.5 from my code?

Point the OpenAI SDK at https://api.aigateway.sh/v1 with your AIgateway key and set model to "openai/gpt-image-1.5". The request and response shapes match OpenAI exactly.

Does GPT Image 1.5 support streaming, tool calling, vision, and JSON mode?

Streaming — no. Tool calling — no. Vision — no. JSON mode — no. Prompt caching — no.

What are the best use cases for GPT Image 1.5?

Marketing assets, Product mockups, Concept art. Key strengths: Text-to-image generation; Creative control.

Can I bring my own OpenAI API key (BYOK)?

Yes. Attach a OpenAI key in your AIgateway dashboard and this model flips to pass-through — you pay OpenAI directly and AIgateway waives the 5% platform fee on those calls.