We generate 200 marketing creatives a day through the GPT Image 2 API. Weekly cycles dropped to overnight.
The GPT Image 2 API generates images (OpenAI GPT Image 2) from natural-language prompts. Sizes from 1024×1024 up to 4K (3840×2160) across square, portrait and landscape, × three quality tiers (Low / Medium / High) — all through one REST endpoint, priced 5% below OpenAI's published GPT Image 2 API rate. Representative tiers below; all 18 sizes plus `auto` are available via the API.
Input
The text prompt sent to the model
Output
SampleRun the model to replace this previewGPT Image 2 API: Text to Image
Use the GPT Image 2 API to generate images from natural-language prompts.
The GPT Image 2 API generates images (OpenAI GPT Image 2) from natural-language prompts. Three native sizes (1024×1024 Square, 1024×1536 Portrait, 1536×1024 Landscape) and three quality tiers (Low / Medium / High) configurable per call. PNG, JPEG, and WebP output, optional transparent background.
Pricing on the GPT Image 2 API is 5% below OpenAI's published rate, held flat across the 9-tier matrix. The GPT Image 2 API uses one RouterBase key — no provider-specific SDKs.
Six reasons teams ship on the GPT Image 2 API
From native typography to 5% off official pricing — what the GPT Image 2 API gets right.
Natural-language generation
Describe the image; the GPT Image 2 API renders it. No prompt-engineering tricks required.
Three native sizes
Square 1:1, Portrait 2:3, Landscape 3:2 — set per GPT Image 2 API request via one string parameter.
Three quality tiers
Low / Medium / High — speed-vs-detail trade-off configured per call.
Native typography
The GPT Image 2 API renders in-image text reliably (signs, labels, posters, brand assets).
Transparent backgrounds
PNG with alpha for ecommerce mockups and overlay-ready brand assets.
5% off official
Pay 5% less than OpenAI's published rate; the GPT Image 2 API discount is flat across all 9 tiers.
Quickstart
Get started with the GPT Image 2 API in 3 steps
From sign-up to your first GPT Image 2 API call in under 5 minutes.
Create a RouterBase API key
Sign up and generate sk-rb-… — one key works for the GPT Image 2 API and 200+ other models.
POST to the GPT Image 2 API
Send a prompt in JSON, optionally pin size and quality. The GPT Image 2 API returns a signed URL within seconds.
Inspect the result
Each GPT Image 2 API response includes generation metadata for auditing and a render URL ready to embed.
Pay only for what you use
RouterBase passes through partner-tier pricing. Compared against the model's official published API rate.
| Resolution | RouterBase | Official | Save |
|---|---|---|---|
| quality=low · size=1024x1024 | $0.0047 | −20% | |
| quality=medium · size=1024x1024 | $0.042 | −20% | |
| quality=high · size=1024x1024 | $0.169 | −20% | |
| quality=low · size=1024x1536 / quality=low · size=1536x1024 | $0.0038 | −20% | |
| quality=medium · size=1024x1536 / quality=medium · size=1536x1024 | $0.033 | −20% | |
| quality=high · size=1024x1536 / quality=high · size=1536x1024 | $0.132 | −20% | |
| quality=low · size=1024x2048 / quality=low · size=2048x1024 | $0.0032 | −20% | |
| quality=medium · size=1024x2048 / quality=medium · size=2048x1024 | $0.028 | −20% | |
| quality=high · size=1024x2048 / quality=high · size=2048x1024 | $0.113 | −20% | |
| quality=low · size=688x2048 / quality=low · size=2048x688 | $0.0017 | −20% | |
| quality=medium · size=688x2048 / quality=medium · size=2048x688 | $0.016 | −20% | |
| quality=high · size=688x2048 / quality=high · size=2048x688 | $0.063 | −20% | |
| quality=low · size=880x2048 / quality=low · size=2048x880 | $0.0026 | −20% | |
| quality=medium · size=880x2048 / quality=medium · size=2048x880 | $0.023 | −20% | |
| quality=high · size=880x2048 / quality=high · size=2048x880 | $0.090 | −20% | |
| quality=low · size=1152x2048 / quality=low · size=2048x1152 | $0.0038 | −20% | |
| quality=medium · size=1152x2048 / quality=medium · size=2048x1152 | $0.034 | −20% | |
| quality=high · size=1152x2048 / quality=high · size=2048x1152 | $0.136 | −20% | |
| quality=low · size=1360x2048 / quality=low · size=2048x1360 | $0.0051 | −20% | |
| quality=medium · size=1360x2048 / quality=medium · size=2048x1360 | $0.044 | −20% | |
| quality=high · size=1360x2048 / quality=high · size=2048x1360 | $0.176 | −20% | |
| quality=low · size=1536x2048 / quality=low · size=2048x1536 | $0.0059 | −20% | |
| quality=medium · size=1536x2048 / quality=medium · size=2048x1536 | $0.053 | −20% | |
| quality=high · size=1536x2048 / quality=high · size=2048x1536 | $0.213 | −20% | |
| quality=low · size=2048x2048 | $0.0095 | −20% | |
| quality=medium · size=2048x2048 | $0.086 | −20% | |
| quality=high · size=2048x2048 | $0.343 | −20% | |
| quality=low · size=2160x3840 / quality=low · size=3840x2160 | $0.0089 | −20% | |
| quality=medium · size=2160x3840 / quality=medium · size=3840x2160 | $0.080 | −20% | |
| quality=high · size=2160x3840 / quality=high · size=3840x2160 | $0.320 | −20% |
Your request will cost $0.042 per run (quality=medium · size=1024x1024).With $1 you can run this model approximately 23 times.
What teams build with the GPT Image 2 API
Real production loads running on the GPT Image 2 API and the RouterBase model catalog.
We swapped three providers through RouterBase in one line of code when OpenAI had its outage. Our users never noticed.
In-image typography on the GPT Image 2 API saves us a Photoshop round trip per asset — labels, signs, and posters render correctly first try.
The GPT Image 2 API became our default for synthetic data thumbnails. Pipeline went from days to hours.
Plugged the GPT Image 2 API into my existing OpenAI SDK with one base URL swap — less work than writing this testimonial.
RouterBase puts 200+ models behind one key. Our research team stopped asking for new provider accounts.
Generated 1536×1024 hero banners through the GPT Image 2 API at one-fifth our previous cost.
We migrated 42 services to RouterBase over a weekend. The only PR comment we got was 'wait, that's all?'.
Pricing on the GPT Image 2 API is 5% below OpenAI's published rate — at our scale that's six figures saved per quarter.
Frequently Asked Questions
Common questions about the GPT Image 2 API.
The GPT Image 2 API is RouterBase's pass-through to OpenAI's flagship image-generation model. It renders images from natural-language prompts across three native sizes and three quality tiers, with PNG / JPEG / WebP output and optional transparent background.