Every image model, one endpoint

Image Generation

Generate and edit images through the OpenAI-compatible images API or conversationally through chat completions.

Get startedRead the docs
POST /v1/images/generations
A cute cat wearing a tiny top hat
A cute cat wearing a tiny top hat, generated image 1
A cute cat wearing a tiny top hat, generated image 2
A cute cat wearing a tiny top hat, generated image 3
A cute cat wearing a tiny top hat, generated image 4
gemini-3-pro-image · 4 generations
01

OpenAI format

Use the images API you know.

02

Edits

Change existing images with a prompt.

03

In chat

Generate images mid-conversation.

04

Many models

Swap image models with one string.

Built for

  • Marketing assets

    Heroes, thumbnails and ads

  • Product mockups

    Iterate on visuals fast

  • In-app creation

    Let users generate images

Generate an image
terminal
1curl https://api.llmgateway.io/v1/images/generations \2  -H "Authorization: Bearer $LLM_GATEWAY_API_KEY" \3  -H "Content-Type: application/json" \4  -d '{5    "model": "gemini-3-pro-image",6    "prompt": "A cute cat wearing a tiny top hat",7    "size": "1024x1024"8  }'
Read docs

More in models & modalities

All features

Vision

Send images, get answers

Document Reading

Send PDFs straight to the model

OCR

Documents and images to markdown

Start using Image Generation today

One API key. Every model. Live in minutes.

Start buildingBrowse models