Flux 1.1 Pro Ultra

Name: Flux 1.1 Pro Ultra
Brand: Black Forest Labs
SKU: flux-pro-ultra
Price: 0.072 USD
Availability: InStock

BildegenereringTilgjengelig

av Black Forest Labsflux-pro-ultra

FLUX 1.1 Pro in ultra mode. Up to 4 megapixel images with raw mode for photorealism.

Prøv det Få API-nøkkel Sammenlign

Pris: 0,072 USD/bilde
Seiteverholdstall: 1:1, 16:9, 9:16, 3:2, 2:3, 21:9, 9:21
Input → output: Tekst → Bilde
Utvikler: Black Forest Labs
Oppdatert: 23. september 2026

Playground

Prøv Flux 1.1 Pro Ultra

Inndata og resultat

0,072 USD/bilde

Prompt

Sideforhold(valgfritt)

Avanserte innstillinger (2)

Utdataformat(valgfritt)

Raw

⌘/Ctrl + Enter

Resultat

Bildet ditt vises her.

Denne kjøringen

0,072 USD · 7,2 credits

For kontoer uten tidligere kjøp: kjøringer over 2 credits trenger påfyll.

Ny her?

10 gratis credits (0,10 USD) når du registrerer deg med Google

Kan brukes 24 timer etter registrering, opptil 5 kjøringer per dag og maksimalt 2 credits per kjøring. Andre påloggingsmetoder starter uten credits.

Examples

Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.

Open full size
Prompt
a majestic snow-capped mountain peak bathed in a warm glow of the setting sun
Settings
aspect_ratio

3:2
Open full size
Prompt
a close up of a miniature model of a small village nestled amidst a lush, verdant landscape, featuring a winding river and a backdrop of trees and buildings.
Settings
aspect_ratio

3:2
Open full size
Prompt
the serene interior of a cave, where a pool of water is nestled amidst an abundance of greenery. Sunlight filters through the cave opening, casting a soft glow on the surrounding foliage and the tranquil water below
Settings
aspect_ratio

3:2

Eksempelprompts

Eksempler fra Railwail-katalogen. De ble ikke generert live på denne siden.

Photorealistic Portrait
A close-up editorial portrait of an elderly fisherman with deep weathered wrinkles, bright blue eyes, wearing a cable-knit sweater, shot on medium format film with shallow depth of field, natural window light
Architecture
A stunning modern cliffside villa with floor-to-ceiling glass walls overlooking the Mediterranean Sea, infinity pool merging with the horizon, golden hour lighting, architectural photography style
Nature Macro
An extreme macro photograph of morning dew drops on a spider web, each droplet acting as a tiny lens refracting the sunrise behind it, bokeh background of wildflowers, National Geographic quality

Om Flux 1.1 Pro Ultra

Kort sagtPer 23. september 2026

Flux 1.1 Pro Ultra er en modell fra Black Forest Labs i kategorien Bildegenerering. På Railwail koster Flux 1.1 Pro Ultra 0,072 USD per bilde. Støttede bildeformat: 1:1, 16:9, 9:16, 3:2, 2:3, 21:9 og 9:21.

Bakgrunn

Om Black Forest Labs

Grunnlagt 2024 · Freiburg, Germany

Black Forest Labs was founded in August 2024 by Robin Rombach, Patrick Esser, Andreas Blattmann and Dominik Lorenz, the team that created Latent Diffusion at LMU Munich and Stable Diffusion at Stability AI. Headquartered in Freiburg, Germany, the lab raised a $31M seed round led by Andreessen Horowitz and has since released the FLUX.1 family and FLUX 1.1 series. FLUX 1.1 [pro] (released October 2024) and the higher-resolution FLUX 1.1 [pro] Ultra (released November 2024) are the flagship commercial tiers, available only through the Black Forest Labs API and partner platforms such as Replicate, fal.ai and Together AI.

Besøk Black Forest Labs

Arkitektur

Rectified-flow Diffusion Transformer (DiT) with native 4 MP rendering

FLUX 1.1 [pro] Ultra is Black Forest Labs' highest-quality commercial image model, released as an API-only tier in November 2024. It builds on the FLUX 1.1 [pro] backbone — a rectified-flow Diffusion Transformer trained with the flow-matching objective from the SD3 paper (Esser et al. 2024) — but is fine-tuned and architecturally extended to produce up to 4 megapixels (2048x2048 or 1568x2520) natively without tiling or super-resolution. Black Forest Labs reports that Ultra achieves these resolutions with the same speed as standard FLUX 1.1 [pro] thanks to architectural and inference optimisations including grouped attention, FP8 inference and improved noise schedules. A complementary 'Raw' mode is exposed that produces less stylised, more photographic outputs. The model uses T5-XXL plus CLIP-L text encoders, the standard 16x latent VAE and 28-50 flow-matching sampling steps.

Parametere: Undisclosed (substantially larger than 12B FLUX.1 backbone)
Kontekst: 512 tokens

Evner

Native 4 MP rendering (up to 2048x2048 or 1568x2520)
State-of-the-art photorealism in the FLUX family
'Raw' mode for unstylised photographic look
Strong typography for an image model
Excellent prompt adherence via T5-XXL
Fast inference (~10-20s per 4MP image)
Available via Black Forest Labs API, Replicate, fal.ai, Together AI
Best for: print-quality marketing, large-format ads, editorial photography, premium creative.

Trening og lisens

Pretrained on a large licensed image-text corpus; fine-tuned at high resolutions for the Ultra tier. Exact data is not disclosed.

Lisens: Proprietary commercial license via Black Forest Labs API and approved partners. Pay-per-image pricing.

Sikkerhetstesting: API-level safety filters covering CSAM, NCII, IP-protected characters and named living persons. Outputs may carry watermark metadata.

Kjente begrensninger

API only, no open weights
Higher per-image cost than dev/schnell tiers
Generation latency higher than 1 MP modes
No fine-tuning for external customers

Forskningsartikler

Priser

Priser i amerikanske dollar. Bruk belastes fra forhåndsbetalt kreditt.

Per bilde	0,072 USD per bilde

1 kreditt = 0,01 USD

Kostnadsberegner

Prisberegner

Kjøringer

Totalt

7,20 USD

720 credits

Per kjøring

0,072 USD · 7,2 credits

Fast pris per kjøring, kjent før kjøringen starter.

API

Ring Flux 1.1 Pro Ultra med din Railwail API-nøkkel. Bruk denne modell-IDen i forespørselen:

flux-pro-ultraAPI-dokumentasjon Få en API-nøkkel

curl https://railwail.com/api/v1/images/generations \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-pro-ultra",
    "prompt": "A lighthouse on a rocky coast at sunset, photorealistic"
  }'

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["RAILWAIL_API_KEY"],
    base_url="https://railwail.com/api/v1",
)

image = client.images.generate(
    model="flux-pro-ultra",
    prompt="A lighthouse on a rocky coast at sunset, photorealistic",
)

print(image.data[0].url)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.RAILWAIL_API_KEY,
  baseURL: "https://railwail.com/api/v1",
});

const image = await client.images.generate({
  model: "flux-pro-ultra",
  prompt: "A lighthouse on a rocky coast at sunset, photorealistic"
});

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

// npm install railwail
import railwail from "railwail";

const rw = railwail(process.env.RAILWAIL_API_KEY);

const res = await rw.image("flux-pro-ultra", "A lighthouse on a rocky coast at sunset, photorealistic");

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

Sett nøkkelen din som RAILWAIL_API_KEYOpprett API-nøkkel

Spesifikasjoner

Modell-ID: flux-pro-ultra
Utvikler: Black Forest Labs
Kategori: Bildegenerering
Inndata: Tekst
Utdata: Bilde
Utdataformater: JPG, PNG
Sideforhold: 1:1, 16:9, 9:16, 3:2, 2:3, 21:9, 9:21
Fakturering: Fastpris, kjent før kjøring
Modellstørrelse: Undisclosed (substantially larger than 12B FLUX.1 backbone)
Lisens: Proprietary commercial license via Black Forest Labs API and approved partners. Pay-per-image pricing.
Katalogoppføring oppdatert: 23. september 2026

Inndataparametere

Inndataer og innstillinger fra modellens inndataskjema. Eksemplet i API-delen viser hvilke av dem APIen godtar.

ParameterTypeStandardTillatte verdier

promptobligatorisk
Type: Tekst
Standard: –
Tillatte verdier: –
raw
Type: Ja/Nei
Standard: false
Tillatte verdier: –
aspect_ratio
Type: Valg
Standard: 3:2
Tillatte verdier: 1:1, 16:9, 9:16, 3:2, 2:3, 21:9 eller 9:21
output_format
Type: Valg
Standard: jpg
Tillatte verdier: jpg eller png

Merkelapper

high-quality
photorealistic

Brukstilfeller

Hva det brukes til

Print-quality advertising creatives
Editorial and magazine illustration
Premium brand campaigns
Large-format poster and billboard imagery
Hero shots for e-commerce
Stock-photo-grade content

Alle modeller i Bildegenerering

Ofte stilte spørsmål

Hva er Flux 1.1 Pro Ultra?

Flux 1.1 Pro Ultra er en modell fra Black Forest Labs i kategorien Bildegenerering. På Railwail kan du kalle den med en API-nøkkel gjennom Railwail API.

Hvor mye koster Flux 1.1 Pro Ultra på Railwail?

På Railwail koster Flux 1.1 Pro Ultra 0,072 USD per bilde. Prisen er kjent før kjøringen starter. Bruk betales fra forhåndskjøpte kreditter; 1 kreditt tilsvarer 0,01 USD.

Hvilke innstillinger støtter Flux 1.1 Pro Ultra?

I henhold til inndataskjemaet kjenner Flux 1.1 Pro Ultra disse parametrene: prompt, raw, aspect_ratio (1:1, 16:9, 9:16, 3:2, 2:3, 21:9 eller 9:21) og output_format (jpg eller png).

Hvor rask er Flux 1.1 Pro Ultra?

Det finnes ennå ikke nok målte kjøringer av Flux 1.1 Pro Ultra på Railwail til å angi en kjøretid. Det avhenger av inndataene, innstillingene og belastningen hos leverandøren.

Er Flux 1.1 Pro Ultra bedre enn FLUX 1.1 Pro?

Det avhenger av oppgaven. Flux 1.1 Pro Ultra (Black Forest Labs) og FLUX 1.1 Pro (Black Forest Labs) er begge modeller i kategorien Bildegenerering. Sammenligningssiden viser prisene og spesifikasjonene deres side ved side.

Sammenlign Flux 1.1 Pro Ultra og FLUX 1.1 Pro

Hvordan bruker jeg Flux 1.1 Pro Ultra gjennom API-en?

Opprett en Railwail API-nøkkel og send forespørselen din med modell-ID-en flux-pro-ultra. Kodeeksempler for curl, Python og JavaScript finnes i API-delen av denne siden.

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Bruk Flux 1.1 Pro Ultra via APIen

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