Krea 3 API

Krea 3 (Oct 2026), Krea's image model — about 1-megapixel images in any of five shapes, with built-in prompt expansion. 3¢ an image on Varosity Credits (fal's $0.025 per megapixel).

$0.03/img on Varosity credits ($0.025/img with your own key).

Use Krea 3 with your agent Try it in the browser

no falaccount needed · provider's list price, no markup · failed renders never billed

Best for

photoreal and stylized looks
built-in prompt expansion
about 1 megapixel

Trade-offs

text-to-image only via Varosity

How to get the best result

Polished photoreal or stylized images from short prompts: Krea 3 expands the prompt itself before rendering. Pick instead: gpt-image-2 or nano-banana for exact text in the image; flux-1-schnell for 1¢ drafts; flux-2-pro for hex-color control.

Prompting

A short, clear prompt is enough (subject, setting, mood); the model expands it.
Name the look you want (film photo, watercolor, 3D render) and the lighting.
Use providerOptions.negativePrompt for what must not appear (up to 1,024 characters).

Settings on Varosity

Always about 1 megapixel: 1344×768 (16:9), 768×1344 (9:16), 1024×1024 (1:1), 896×1120 (4:5), 1344×576 (21:9).
3¢ an image on Credits (fal's $0.025 per megapixel at up to 1 MP, rounded up to whole cents).
Text-to-image only via Varosity; referenceImageUrl is not used.

Avoid

Expecting 2K or larger output; Varosity renders about 1 megapixel.

Example prompt

A red fishing boat at a wooden pier at golden hour, gulls overhead, 35mm film photo, soft grain.

From fal.ai, checked against what Varosity sends.

Call it from your code

One Varosity key works for every model.

curl -X POST https://varosity.ai/api/v1/images \
  -H "Authorization: Bearer $VAROSITY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "prompt": "studio product shot of a matte black water bottle, soft rim light",
    "modelId": "krea-3",
    "aspectRatio": "1:1"
  }'

Or ask your agent

Connect Claude, Cursor, or any MCP client to https://varosity.ai/api/mcp with your key, then say:

"Use Varosity with krea-3 to generate an image of …"

Agent setup guide