Flux Dev

Generovanie obrázkovDostupné
od Black Forest LabsID modelu: flux-dev

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

Cena
0,0384 USD/obrázok
Pomery strán
1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Vstup → výstup
Text → Obrázok
Vývojár
Black Forest Labs
Aktualizované
23. septembra 2026
01

Playground

Vyskúšajte Flux Dev

Vstup a výstup

0,0384 USD/obrázok
Vyskúšajte Flux Dev
Pokročilé nastavenia (1)
Výsledok
Tvoj obrázok sa objaví tu.

Tento beh

0,0384 USD · 3,84 credits

Pre účty bez nákupu: behy nad 2 credits vyžadujú dobíjanie.

Nový tu?

10 bezplatných credits (0,10 USD) pri registrácii cez Google

Použiteľné 24 hodín po registrácii, až 5 behov za deň a maximálne 2 credits za beh. Ostatné spôsoby prihlásenia sa spúšťajú bez credits.

02

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.
  • Example output 1 from Flux Dev: style of 80s cyberpunk, a portrait photoOpen full size

    Prompt

    style of 80s cyberpunk, a portrait photo

    Settings

    aspect_ratio
    1:1
  • Example output 2 from Flux Dev: pnt style Illustration of a latina womanOpen full size

    Prompt

    pnt style Illustration of a latina woman

    Settings

    aspect_ratio
    1:1
  • Example output 3 from Flux Dev: A tabby cat lounging on a sun-dappled windowsill, half its body in shadow, half in bright light, flmft styleOpen 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

Príklady promptov

Príklady z katalógu Railwail. Neboli vygenerované živě na tejto stránke.

  • 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
03

O Flux Dev

StručneK 23. septembra 2026

Flux Dev je model od Black Forest Labs v kategórii Generovanie obrázkov. Na Railwail stojí Flux Dev 0,0384 USD za obrázok. Podporované pomery strán: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 a 5:4.

Pozadie

O Black Forest Labs

Založené 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).

Navštíviť Black Forest Labs

Architektúra

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
Kontext
512 tokenov

Schopnosti

  • 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.

Tréning a licencia

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.

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

Bezpečnostné testy: 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.

Známe obmedzenia

  • 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
04

Ceny

Ceny v USD. Použitie sa účtuje z predplateného kreditu.
Za obrázok0,0384 USD za obrázok
  • 1 kredit = 0,01 USD

Kalkulačka nákladov

Kalkulačka cien

/ spustenie

Celkom

3,84 USD

384 kreditov

Na spustenie

0,0384 USD · 3,84 kreditov

Pevná cena za spustenie, známa pred spustením.

05

API

Zavolajte Flux Dev s vaším API kľúčom Railwail. V požiadavke použite toto ID modelu:
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"
  }'
Nastavte svoj kľúč ako RAILWAIL_API_KEYVytvoriť API kľúč
06

Špecifikácie

ID modelu
flux-dev
Vstup
Text
Výstup
Obrázok
Formáty výstupu
WEBP, JPG, PNG
Pomery strán
1:1, 16:9, 9:16, 3:2, 2:3, 4:5, 5:4
Fakturácia
Pevná cena, známa pred spustením
Veľkosť modelu
~12B parameters
Licencia
FLUX.1 [dev] Non-Commercial License — free for research and personal use; commercial use requires a separate agreement with Black Forest Labs.
Katalógová položka aktualizovaná
23. septembra 2026

Vstupné parametre

Vstupy a nastavenia zo vstupnej schémy modelu. Príklad v sekcii API ukazuje, ktoré z nich API akceptuje.

  • promptpovinné
    Typ: Text
    Predvolené: –
    Povolené hodnoty: –
  • aspect_ratio
    Typ: Výber
    Predvolené: 1:1
    Povolené hodnoty: 1:1, 16:9, 9:16, 3:2, 2:3, 4:5 alebo 5:4
  • output_format
    Typ: Výber
    Predvolené: webp
    Povolené hodnoty: webp, jpg alebo png

Značky

  • popular
  • fast
  • lora
07

Prípady použitia

Na čo sa používa

  • 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)
08

Často kladené otázky

Čo je Flux Dev?

Flux Dev je model od Black Forest Labs v kategórii Generovanie obrázkov. Na Railwail ho môžete volať pomocou API kľúča cez Railwail API.

Koľko stojí Flux Dev na Railwail?

Na Railwail stojí Flux Dev 0,0384 USD za obrázok. Cena je známa pred spustením. Použitie sa platí z predplateného kreditu; 1 kredit sa rovná 0,01 USD.

Ktoré nastavenia podporuje Flux Dev?

Podľa svojej vstupnej schémy Flux Dev pozná tieto parametre: prompt, aspect_ratio (1:1, 16:9, 9:16, 3:2, 2:3, 4:5 alebo 5:4) a output_format (webp, jpg alebo png).

Ako rýchly je Flux Dev?

Pre Flux Dev je na Railwail zatiaľ príliš málo meraných spustení na určenie doby spustenia. Závisí to od vstupu, nastavení a zaťaženia u poskytovateľa.

Je Flux Dev lepší ako FLUX 1.1 Pro?

Závisí to od úlohy. Flux Dev (Black Forest Labs) a FLUX 1.1 Pro (Black Forest Labs) sú oba modely v kategórii Generovanie obrázkov. Stránka porovnania zobrazuje ich ceny a špecifikácie vedľa seba.

Porovnať Flux Dev a FLUX 1.1 Pro

Ako používam Flux Dev cez API?

Vytvorte Railwail API kľúč a pošlite svoju požiadavku s ID modelu flux-dev. Príklady kódu pre curl, Python a JavaScript sú v časti API na tejto stránke.

09

Porovnateľné modely

Všetky v tejto kategórii
  • FLUX 1.1 ProBlack Forest Labs

    Black Forest Labs' flagship text-to-image model. Faster generation than FLUX.1 Pro at higher prompt adherence, with strong photorealism and reliable spatial composition. Runs as a hosted Replicate model.

    0,048 USD/obrázok

    25 % drahšie na jednotku

    Porovnať Flux Dev a FLUX 1.1 Pro
  • Flux 1.1 Pro UltraBlack Forest Labs

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

    0,072 USD/obrázok

    88 % drahšie na jednotku

    Porovnať Flux Dev a Flux 1.1 Pro Ultra
  • Google Imagen 4Google DeepMind

    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.

    0,048 USD/obrázok

    25 % drahšie na jednotku

    Porovnať Flux Dev a Google Imagen 4

Použiť Flux Dev cez API

Jeden API kľúč pre všetky modely na Railwail. Použitie sa účtuje z predplateného kreditu, 1 kredit = 0,01 USD.