FLUX - Askr

FLUX is a high-fidelity image family from Black Forest Labs, known for sharp detail and strong prompt adherence. A great default when quality matters.

Best for

Photorealistic and detailed illustration.
Prompts that need to be followed closely.
Hero images, product shots and marketing visuals.


Modality	Image (text in, image out)
Example model id	`flux-1.1-pro`
Endpoint	`POST /v1/images/generations`

Example

curl https://api.heyaskr.ai/v1/images/generations \
  -H "Authorization: Bearer ASKR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-1.1-pro",
    "prompt": "a red fox in a snowy forest, cinematic lighting",
    "size": "1024x1024",
    "n": 1
  }'

import requests

r = requests.post(
    "https://api.heyaskr.ai/v1/images/generations",
    headers={"Authorization": "Bearer ASKR_API_KEY"},
    json={
        "model": "flux-1.1-pro",
        "prompt": "a red fox in a snowy forest, cinematic lighting",
        "size": "1024x1024",
        "n": 1,
    },
)
print(r.json()["data"][0]["url"])

Pricing

Priced per image, by resolution. As a rough guide, expect around $0.04 per 1024×1024 image for the pro model. Larger sizes cost more.

Image
FLUX sample output: a red fox in a snowy forest

The model id and prices above are examples. Confirm the exact id and current price against the live /v1/models list before you rely on them. Image URLs expire after 24 hours, so download anything you want to keep.

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