GPT Image API
GPT Image 2, GPT Image 2.5 and 2.6 Flare / Sunburst — text-to-image and image editing, billed per image.
Access GPT Image 2, GPT Image 2.5 and 2.6 Flare / Sunburst through APIMaster's OpenAI-compatible images endpoint. Generate from a prompt or edit reference images with independent per-model pricing. Use synchronous requests or asynchronous task polling. Select 1K, 2K or 4K; each resolution routes to a provider that supports it.
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Transparent per-image pricing — pay only for the images you generate.
GPT Image API — Pricing
| Model | Resolution | Our price | Official | Save |
|---|---|---|---|---|
| 1K | $0.025/ img | $0.25/ img | 90% | |
| 2K | $0.039/ img | $0.3/ img | 87% | |
| 4K | $0.078/ img | $0.6/ img | 87% | |
| 1K | $0.025/ img | $0.25/ img | 90% | |
| 2K | $0.039/ img | $0.3/ img | 87% | |
| 4K | $0.078/ img | $0.6/ img | 87% | |
| 1K | $0.025/ img | $0.25/ img | 90% | |
| 2K | $0.039/ img | $0.3/ img | 87% | |
| 4K | $0.078/ img | $0.6/ img | 87% | |
| 1K | $0.025/ img | $0.25/ img | 90% | |
| 2K | $0.039/ img | $0.3/ img | 87% | |
| 4K | $0.078/ img | $0.6/ img | 87% | |
| 1K | $0.025/ img | $0.25/ img | 90% | |
| 2K | $0.039/ img | $0.3/ img | 87% | |
| 4K | $0.078/ img | $0.6/ img | 87% |
Capabilities
High-quality images
Detailed text-to-image generation with strong prompt following.
Sync or async
Instant sync calls, or async submit + poll for batch jobs.
Per-image billing
Pay per image generated — no subscription.
Use cases
Quick start
curl https://apimaster.ai/v1/images/generations \
-H "Authorization: Bearer $APIMASTER_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-image-2",
"prompt": "An orange cat at sunset, watercolor",
"size": "1:1",
"resolution": "1k",
"n": 1
}'GPT Image API — Frequently asked questions
Which image models are available?
Currently available: gpt-image-2, gpt-image-2.5-sunburst, gpt-image-2.5-flare, gpt-image-2.6-flare, gpt-image-2.6-sunburst — billed per image.
Which endpoint do I call?
The OpenAI-compatible images endpoint (POST /v1/images/generations) — not /chat/completions. See Quick start below.
Sync or async?
Use sync for one-off images (returns the result directly) or async submit + poll for batch pipelines.
How do 1K, 2K and 4K routing work?
Choose a resolution in the playground or send resolution: 1k, 2k or 4k with size: 1:1 (or another supported aspect ratio). Prices and available routes follow the selected tier. Providers limited to 1K are excluded from 2K/4K requests. If no matching provider is available, the request fails without generating or charging for a lower-resolution image.
How is it billed?
Per image generated, pay-as-you-go from $1.
Is my data safe?
Yes. Your API data is not stored or used for training, and all requests are sent over encrypted connections.
Other models
How to Get Started
Top Up Your Balance
Add credits via USDT or Epay. One balance works across all models and providers.
Top Up NowCreate Your API Key
Sign up and create an OpenAI-compatible API key in 3 seconds. No credit card required.
Create API KeyPlug Into Your Code or Agent
Swap in your APIMaster key and base URL — works with any OpenAI-compatible tool: Claude Code, Cursor, LangChain, LiteLLM, and more.
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