Cheaper Gen.
Black Forest LabsimageNewOperational

FLUX 3 API

Black Forest Labs' newest image model — grounded, layout-aware, up to 4K

FromUp to −12%
$0.042/imgOfficial price $0.048

per image · 1K

Try FLUX 3

Runs on your balance at the price shown on the button. Results are saved to your account.

Open full-screen Studio
0/5000

Output image shape.

Output size tier: 1K ≈ 1 MP, 1.5K ≈ 2.25 MP, 2K ≈ 4 MP, 4K ≈ 16 MP.

Estimated cost…

Create a free account with Google or email — pay only for what you generate.

Your image will appear here

Write a prompt, pick your settings and hit Run. You only pay for successful generations.

What is FLUX 3?

FLUX 3 from Black Forest Labs generates and edits images up to 4K with web-grounded knowledge, layout control and up to 10 reference images, at a flat price per resolution tier.

Up to 4K
1K, 1.5K, 2K and 4K tiers
10 references
Free reference images
Grounded
Knows real things
15 ratios
21:9 to 9:21

The next FLUX

FLUX 3 is a big step over FLUX.2 in realism, text rendering and prompt understanding. It can look things up before it draws, so real products, places and styles come out right.

Edit, combine, lay out

Edit a single image, combine up to 10 references, or describe where things go — FLUX 3 follows layouts and keeps the parts you didn't mention untouched. Reference images are free.

FLUX 3 pricing

Pay per image. No subscription. Failed generations are refunded automatically.

TierOfficial priceCheaper Gen.
1K
≈1 MP
$0.048/img$0.042/img
1.5K
≈2.25 MP
$0.07/img$0.062/img
2K
≈4 MP
$0.10/img$0.088/img
4K
≈16 MP
$0.607/img$0.534/img
  • Official price: BFL API list price for FLUX 3 Image ($0.048 at 1K, $0.07 at 1.5K, $0.10 at 2K, $0.607 at 4K; reference images free). Prices verified 2026-10-16.
  • Editing costs the same as generation; reference images are free.

Specifications

Resolutions
1K · 1.5K · 2K · 4K
Aspect ratios
1:1 · 4:5 · 3:4 · 2:3 · 9:16 · 1:2 · 9:21 · 5:4 · 4:3 · 3:2 · 16:9 · 2:1 · 21:9 · 7:5 · 5:7
Edit inputs
Up to 10 images (free)
Released
Oct 1, 2026

Use FLUX 3 via API

One request to start a job, one to fetch the result. Same shape for every model.

Full API reference
import os, time, requests

API = "https://cheapergen.com/api/v1"
headers = {"Authorization": f"Bearer {os.environ['CHEAPERGEN_API_KEY']}"}

# 1. Submit the job
job = requests.post(f"{API}/run/bfl/flux-3/text-to-image", headers=headers, json={
    "prompt": "A rain-soaked night market in Taipei, steam rising from food stalls, neon signs in Chinese, 35mm photo",
    "aspect_ratio": "1:1",
    "resolution": "1K"
}).json()

# 2. Poll until it finishes (or pass "webhook_url" and skip polling)
while job["status"] in ("queued", "running"):
    time.sleep(3)
    job = requests.get(f"{API}/generations/{job['id']}", headers=headers).json()

print(job["status"], job["output"]["images"][0]["url"] if job["status"] == "succeeded" else job["error"])

Example prompts

Hit “Try it” to load a prompt into the playground above.

  • A field guide page illustrating five North American songbirds with labeled names, watercolor on cream paper

    Try it
  • Wide establishing shot of a futuristic Lagos skyline at dusk, maglev train crossing the lagoon

    Try it
  • Image Edit

    Make the car in image 1 deep emerald green and move it to the coastal road in image 2

    Try it

FLUX 3 FAQ

FLUX 3 is billed per image by resolution tier — 1K, 1.5K, 2K or 4K. The prompt and reference images are free, and editing costs the same as generation. Failed generations are not charged.

Yes. Requests run on Black Forest Labs' FLUX 3 model through official API channels, at a lower price than the BFL list price.

Yes, outputs of the FLUX API models can be used commercially, subject to Black Forest Labs' terms and our Terms of Service.

FLUX 3 is developed by Black Forest Labs. Cheaper Gen. provides API access through official upstream endpoints and does not own the model. Trademarks belong to their respective owners. · Markdown · OpenAPI