FLUX.1 Kontext Dev

Model ID

flux-kontext-dev

Provider

Black Forest Labs — served by Replicate

Price

$0.025 per image

Capabilities

Image editing, Image reference

Black Forest Labs’ open-weight Kontext editor; a reference image is required.

Pricing

Unit	Price
Per image	$0.025

Billed per image. Prices are live at GET /api/v1/models/flux-kontext-dev; the value above was read from that endpoint when this page was generated.

Use this model

The SDK examples assume you have created a server-side client. This is an editing model: pass the source image as a public HTTPS URL in image.

const image = await client.images.generate({
  model: "flux-kontext-dev",
  prompt: "Replace the background with a clean studio backdrop",
  image: "https://your-cdn.example/source.png",
});

console.log(image.data[0].url);

image = client.images.generate(
    model="flux-kontext-dev",
    prompt="Replace the background with a clean studio backdrop",
    image="https://your-cdn.example/source.png",
)

print(image["data"][0]["url"])

curl https://www.ninjachat.ai/api/v1/images/generations \
  -H "Authorization: Bearer $NINJACHAT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"flux-kontext-dev","prompt":"Replace the background with a clean studio backdrop","image":"https://your-cdn.example/source.png"}'

Supported parameters

prompt, model, n, size, aspect_ratio, image, width, height

Check live support

TypeScript SDK

const model = await client.models.retrieve("flux-kontext-dev");

if (!model.servable) throw new Error("flux-kontext-dev is temporarily unavailable");

console.log({
  capabilities: model.capabilities,
  supportedParameters: model.supportedParameters,
  pricing: model.pricing,
  providers: model.providers,
});

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