Flux Dev

Name: Flux Dev
Brand: Black Forest Labs
SKU: flux-dev
Price: 0.0384 USD
Availability: InStock

BildegenereringTilgjengelig

av Black Forest Labsflux-dev

Black Forest Labs' development model. Fast, high-quality image generation with LoRA support.

Prøv det Få API-nøkkel Sammenlign

Pris: 0,0384 USD/bilde
Seiteverholdstall: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Input → output: Tekst → Bilde
Utvikler: Black Forest Labs
Oppdatert: 23. september 2026

Playground

Prøv Flux Dev

Inndata og resultat

0,0384 USD/bilde

Prompt

Sideforhold(valgfritt)

Avanserte innstillinger (1)

Utdataformat(valgfritt)

⌘/Ctrl + Enter

Resultat

Bildet ditt vises her.

Denne kjøringen

0,0384 USD · 3,84 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
style of 80s cyberpunk, a portrait photo
Settings
aspect_ratio

1:1
Open full size
Prompt
pnt style Illustration of a latina woman
Settings
aspect_ratio

1:1
Open full size
Prompt
A tabby cat lounging on a sun-dappled windowsill, half its body in shadow, half in bright light, flmft style
Settings
aspect_ratio

1:1

Eksempelprompts

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

Landscape
A serene mountain lake at golden hour, with snow-capped peaks reflected perfectly in the still water, pine forests lining the shore, warm amber light casting long shadows across the meadow
Character Design
A cyberpunk street samurai with neon-blue cybernetic arm, wearing a weathered leather jacket, standing in a rain-soaked Tokyo alley with holographic signs reflecting in puddles
Still Life
An elegant flat lay arrangement of artisan coffee beans, a brass hand grinder, a ceramic pour-over dripper, and fresh croissants on a dark walnut table, morning light streaming from the left

Om Flux Dev

Kort sagtPer 23. september 2026

Flux Dev er en modell fra Black Forest Labs i kategorien Bildegenerering. På Railwail koster Flux Dev 0,0384 USD per bilde. Støttede bildeformat: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 og 5:4.

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 original Latent Diffusion and Stable Diffusion team from LMU Munich and Stability AI. Headquartered in Freiburg, Germany, the lab raised a $31M seed round led by Andreessen Horowitz and launched the FLUX.1 family in August 2024 with three tiers: FLUX.1 [pro] (closed, API-only, highest quality), FLUX.1 [dev] (open weights, non-commercial, near-pro quality) and FLUX.1 [schnell] (open weights Apache 2.0, distilled few-step).

Besøk Black Forest Labs

Arkitektur

Rectified-flow Diffusion Transformer (DiT)

FLUX.1 [dev] is the open-weights research variant of the FLUX.1 family, providing near-FLUX.1 [pro] quality with publicly downloadable weights. The architecture is a rectified-flow Diffusion Transformer (DiT) with approximately 12B parameters, trained with the flow-matching objective from the SD3 paper (Esser et al. 2024). It uses T5-XXL plus CLIP-L as parallel text encoders, allowing both long descriptive prompts and short keyword-style prompts. Image tokens come from a learned 16x latent VAE. Sampling typically uses 28-50 flow-matching steps with the Euler sampler at guidance ~3.5. FLUX.1 [dev] is guidance-distilled from a teacher and uses 'guidance' as a conditioning input rather than classifier-free guidance at inference, simplifying multi-step deployment. The model produces images up to 2 MP with strong prompt adherence, photorealistic detail and notably good in-image text rendering.

Parametere: ~12B parameters
Kontekst: 512 tokens

Evner

Near-state-of-the-art photorealism for an open model
Up to 2 MP output resolution (1MP standard)
Strong prompt adherence via T5-XXL
Good in-image text rendering (short strings)
Open weights — self-hostable, fine-tunable
ControlNet, LoRA and IP-Adapter ecosystem
Compatible with FLUX Tools (Fill, Canny, Depth, Redux)
Best for: self-hosted creative pipelines, custom fine-tunes, research, ControlNet workflows.

Trening og lisens

Pretrained on a large licensed and publicly available image-text dataset; then distilled from a teacher to produce the [dev] guidance-distilled checkpoint. Exact composition and token counts are not disclosed.

Lisens: FLUX.1 [dev] Non-Commercial License — free for research and personal use; commercial use requires a separate agreement with Black Forest Labs.

Sikkerhetstesting: Baseline safety filters at the API tier; the open weights ship without an integrated safety classifier and operators are expected to add their own moderation.

Kjente begrensninger

Non-commercial license restricts production use
Lower quality than FLUX.1 [pro] on fine details
Slow on consumer GPUs without quantisation
Hands and complex small text still imperfect

Forskningsartikler

Priser

Priser i amerikanske dollar. Bruk belastes fra forhåndsbetalt kreditt.

Per bilde	0,0384 USD per bilde

1 kreditt = 0,01 USD

Kostnadsberegner

Prisberegner

Resultater per kjøring

/ kjøring

Kjøringer

Totalt

3,84 USD

384 credits

Per kjøring

0,0384 USD · 3,84 credits

Fast pris per kjøring, kjent før kjøringen starter.

API

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

flux-devAPI-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-dev",
    "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-dev",
    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-dev",
  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-dev", "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-dev
Utvikler: Black Forest Labs
Kategori: Bildegenerering
Inndata: Tekst
Utdata: Bilde
Utdataformater: WEBP, JPG, PNG
Sideforhold: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Fakturering: Fastpris, kjent før kjøring
Modellstørrelse: ~12B parameters
Lisens: FLUX.1 [dev] Non-Commercial License — free for research and personal use; commercial use requires a separate agreement with Black Forest Labs.
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: –
aspect_ratio
Type: Valg
Standard: 1:1
Tillatte verdier: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 eller 5:4
output_format
Type: Valg
Standard: webp
Tillatte verdier: webp, jpg eller png

Merkelapper

popular
fast
lora

Brukstilfeller

Hva det brukes til

Self-hosted creative pipelines
Custom LoRA fine-tunes and brand models
Research and academic experiments
ControlNet and IP-Adapter workflows
Concept art and illustration
Open-source consumer apps (non-commercial)

Alle modeller i Bildegenerering

Ofte stilte spørsmål

Hva er Flux Dev?

Flux Dev 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 Dev på Railwail?

På Railwail koster Flux Dev 0,0384 USD per bilde. Prisen er kjent før kjøringen starter. Bruk betales fra forhåndskjøpte kreditter; 1 kreditt tilsvarer 0,01 USD.

Hvilke innstillinger støtter Flux Dev?

I henhold til inndataskjemaet kjenner Flux Dev disse parametrene: prompt, aspect_ratio (1:1, 16:9, 9:16, 3:2, 2:3, 4:5 eller 5:4) og output_format (webp, jpg eller png).

Hvor rask er Flux Dev?

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

Er Flux Dev bedre enn FLUX 1.1 Pro?

Det avhenger av oppgaven. Flux Dev (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 Dev og FLUX 1.1 Pro

Hvordan bruker jeg Flux Dev gjennom API-en?

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

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25 % dyrere per enhet
Sammenlign Flux Dev og FLUX 1.1 Pro
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Sammenlign Flux Dev og Google Imagen 4

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