Flux Dev

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

BilledgenereringTilgængelig

af Black Forest Labsflux-dev

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

Prøv det Få API-nøgle Sammenlign

Pris: 0,0384 US$/billede
Billedformat: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Input → output: Tekst → Billede
Udvikler: Black Forest Labs
Opdateret: 23. september 2026

Playground

Prøv Flux Dev

Input & resultat

0,0384 US$/billede

Prompt

Billedformat(valgfrit)

Avancerede indstillinger (1)

Outputformat(valgfrit)

⌘/Ctrl + Enter

Resultat

Dit billede vises her.

Denne kørsel

0,0384 US$ · 3,84 credits

For konti uden tidligere køb: kørsler over 2 credits kræver en opladning.

Ny her?

10 gratis credits (0,10 US$) når du tilmelder dig med Google

Kan bruges 24 timer efter tilmelding, op til 5 kørsler pr. dag og højst 2 credits pr. kørsel. Andre login-metoder starter uden 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-kataloget. De blev ikke genereret live på denne side.

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 sagtFra 23. september 2026

Flux Dev er en model af Black Forest Labs i kategorien Billedgenerering. På Railwail koster Flux Dev 0,0384 US$ pr. billede. Understøttede billedformater: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 og 5:4.

Baggrund

Om Black Forest Labs

Grundlagt 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).

Besøg 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.

Parametre: ~12B parameters
Kontekst: 512 tokens

Funktioner

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.

Træning og licens

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.

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

Sikkerhedstests: 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.

Kendte begrænsninger

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 US-dollar. Forbrug debiteres fra forudbetalte credits.

Pr. billede	0,0384 US$ pr. billede

1 kredit = 0,01 US$

Omkostningsberegner

Prisberegner

Resultater pr. kørsel

/ kørsel

Kørsler

I alt

3,84 US$

384 credits

Pr. kørsel

0,0384 US$ · 3,84 credits

Fast pris pr. kørsel, kendt før kørslen starter.

API

Kald Flux Dev med din Railwail API-nøgle. Brug dette model-ID i anmodningen:

flux-devAPI-dokumentation Få en API-nøgle

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);

Indstil din nøgle som RAILWAIL_API_KEYOpret API-nøgle

Specifikationer

Model-ID: flux-dev
Udvikler: Black Forest Labs
Kategori: Billedgenerering
Input: Tekst
Output: Billede
Outputformater: WEBP, JPG, PNG
Billedformat: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Fakturering: Fastpris, kendt før kørslen
Modelstørrelse: ~12B parameters
Licens: FLUX.1 [dev] Non-Commercial License — free for research and personal use; commercial use requires a separate agreement with Black Forest Labs.
Katalogelement opdateret: 23. september 2026

Inputparametre

Inputs og indstillinger fra modellens inputskema. Eksemplet i API-afsnittet viser, hvilke af dem API'en accepterer.

ParameterTypeStandardTilladte værdier

promptpåkrævet
Type: Tekst
Standard: –
Tilladte værdier: –
aspect_ratio
Type: Valg
Standard: 1:1
Tilladte værdier: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 eller 5:4
output_format
Type: Valg
Standard: webp
Tilladte værdier: webp, jpg eller png

Anvendelsestilfælde

Hvad det bruges 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 Billedgenerering

Ofte stillede spørgsmål

Hvad er Flux Dev?

Flux Dev er en model fra Black Forest Labs i kategorien Billedgenerering. På Railwail kan du kalde den med en API-nøgle via Railwail API.

Hvad koster Flux Dev på Railwail?

På Railwail koster Flux Dev 0,0384 US$ pr. billede. Prisen kendes før kørslen starter. Forbrug betales fra forudbetalte credits; 1 credit svarer til 0,01 US$.

Hvilke indstillinger understøtter Flux Dev?

Ifølge dens inputskema kender Flux Dev disse parametre: 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 hurtig er Flux Dev?

Der er endnu ikke nok målte kørsler af Flux Dev på Railwail til at angive en udførelsestid. Det afhænger af inputtet, indstillingerne og belastningen hos provideren.

Er Flux Dev bedre end FLUX 1.1 Pro?

Det afhænger af opgaven. Flux Dev (Black Forest Labs) og FLUX 1.1 Pro (Black Forest Labs) er begge modeller i kategorien Billedgenerering. Sammenligningssiden viser deres priser og specifikationer side om side.

Sammenlign Flux Dev og FLUX 1.1 Pro

Hvordan bruger jeg Flux Dev via API'en?

Opret en Railwail API-nøgle og send din anmodning med model-ID'en flux-dev. Kodeeksempler til curl, Python og JavaScript findes i API-sektionen på denne side.

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Google DeepMind's Imagen 4 text-to-image model, hosted on Replicate. Sharp detail, accurate text rendering, and strong prompt adherence across photographic and illustrated styles. Outputs up to 2K resolution.
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Brug Flux Dev via API'en

En API-nøgle til alle modeller på Railwail. Forbrug debiteres fra forudbetalte credits, 1 credit = 0,01 US$.

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