Image Generation

RunAnywhere.images generates an image from a prompt.

const result = await RunAnywhere.images.generate('A lighthouse at dusk, oil painting', {
  negativePrompt: 'blurry, text, watermark',
  width: 512,
  height: 512,
  steps: 20,
  seed: 42,
})

Options

Field	Default	Meaning
`negativePrompt`	none	What to avoid
`width`	model default	Output width
`height`	model default	Output height
`steps`	model default	Denoising steps; more is slower and usually better
`guidanceScale`	model default	How closely to follow the prompt
`seed`	random	Fix it to reproduce an image
`mode`	generate	Generate or inpaint
`reportPartials`	`false`	Emit intermediate images while streaming

Watching it appear

With reportPartials on, the stream emits intermediate images, so you can show the picture resolving rather than a spinner.

for await (const event of RunAnywhere.images.generateStream('A lighthouse at dusk', {
  steps: 20,
  reportPartials: true,
})) {
  if (event.type === 'partial') showPreview(event.image)
  if (event.type === 'completed') showFinal(event.result)
}

Put the progress on the taskbar or dock icon as well as in the window:

win.setProgressBar(fraction)

Reproducing an image

Fix the seed and every other option, and the same prompt produces the same image. Without a fixed seed, it will not. A desktop app that lets people iterate on a prompt should surface the seed, so a result they liked can be recovered.

Saving

import { writeFile } from 'node:fs/promises'
import { dialog } from 'electron'

const { filePath } = await dialog.showSaveDialog({ defaultPath: 'image.png' })
if (filePath) await writeFile(filePath, result.image)

Cost

Image generation is the heaviest thing in the SDK. A desktop has the headroom a phone does not, but it still takes far longer than a text completion and spins the fans. Run one at a time, show progress, and allow cancellation.

Availability

A diffusion model has to be registered and a backend has to serve it. On win32-arm64 only QHexRT loads, so check capabilities() before offering this.

Getting Started

Swift SDK

Kotlin SDK

React Native SDK

Flutter SDK

Web SDK

Electron SDK

Vibe Coding

Options

Watching it appear

Reproducing an image

Saving

Cost

Availability

​Options

​Watching it appear

​Reproducing an image

​Saving

​Cost

​Availability

Options

Watching it appear

Reproducing an image

Saving

Cost

Availability