flux-1-schnell

Text-to-Image • Black Forest Labs

@cf/black-forest-labs/flux-1-schnell

  • Cloudflare-hosted

FLUX.1 [schnell] is a 12 billion parameter rectified flow transformer capable of generating images from text descriptions.

Model Info
Terms and License link ↗

Usage

export interface Env {
    AI: Ai;
}

export default {
    async fetch(request, env): Promise<Response> {
        const response = await env.AI.run('@cf/black-forest-labs/flux-1-schnell', {
            prompt: 'a cyberpunk lizard',
            seed: Math.floor(Math.random() * 10)
        });
        // response.image is base64 encoded which can be used directly as an <img src=""> data URI
        const dataURI = `data:image/jpeg;charset=utf-8;base64,${response.image}`;
        return Response.json({ dataURI });
    },
} satisfies ExportedHandler<Env>;

export interface Env {
    AI: Ai;
}

export default {
    async fetch(request, env): Promise<Response> {
        const response = await env.AI.run('@cf/black-forest-labs/flux-1-schnell', {
            prompt: 'a cyberpunk lizard',
            seed: Math.floor(Math.random() * 10)
        });
        // Convert from base64 string
        const binaryString = atob(response.image);
        // Create byte representation
        const img = Uint8Array.from(binaryString, (m) => m.codePointAt(0));
        return new Response(img, {
            headers: {
                'Content-Type': 'image/jpeg',
            },
        });
    },
} satisfies ExportedHandler<Env>;

curl https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/ai/run/@cf/black-forest-labs/flux-1-schnell  \
  -X POST  \
  -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN"  \
  -d '{ "prompt": "cyberpunk cat", "seed": "Random positive integer" }'

Parameters

prompt

stringrequiredminLength: 1maxLength: 2048A text description of the image you want to generate.

steps

integermaximum: 8The number of diffusion steps; higher values can improve quality but take longer. Default is 4

image

stringThe generated image in Base64 format.

API Schemas (Raw)

Input Open Download

Output Open Download

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flux-1-schnell - 图1Docs

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description: FLUX.2 [dev] is an image model from Black Forest Labs where you can generate highly realistic and detailed images, with multi-reference support. title: flux-2-dev image: https://developers.cloudflare.com/og-docs.png

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