FLUX (Black Forest Labs)

Frontier image and multimodal models available through an API, playground, and open-weight licenses

画像生成Image GenerationOpen WeightsText-to-ImagePaid only

FLUX from Black Forest Labs is a family of frontier image and multimodal models, including FLUX 3 and FLUX.2. It is available through a pay-as-you-go API, a playground, and open-weight releases that teams can license for self-hosted deployment.

公式サイトへ

更新日

2026-10-21

対応プラットフォーム

Web

有料

Paid: FLUX API is pay-as-you-go with no subscriptions or seat fees; the pricing page shows rates such as $0.048 per image for FLUX 3 Image at 768×768, with model and resolution affecting price. Commercial open-weight use requires a Builder, Platform, Professional, or Enterprise license; no free tier is listed on the pricing page. Confirm current rates and license terms on the official site.

* 料金は参考情報です。最新の料金は公式サイトをご確認ください

bfl.ai

FLUX (Black Forest Labs)の主な機能

FLUX Image Models
Generate photoreal images, infographics, and complex typography at resolutions up to 4MP.
References and Text
Edit images with up to 10 reference images while preserving character, product, and style consistency.
API and Playground
Start in the FLUX playground or send production workloads through the API.
Open Weights
Download FLUX weights and deploy on your own infrastructure under a commercial license.

FLUX (Black Forest Labs)のおすすめ用途

Product teams building image features

Use the FLUX API for production image generation and editing without hosting models.

Teams deploying open-weight models

Download FLUX weights and run them on their own infrastructure under a commercial license.

Agencies and studios with brand workflows

Use multi-reference support and text rendering for product, campaign, and brand-consistent visuals.

長所

Frontier image quality with strong prompt following and text rendering
Multi-reference editing with up to 10 images
API, playground, and open-weight deployment options
Pay-as-you-go API with no subscriptions or seat fees

注意点

Commercial open-weight use requires a separate license
API pricing varies by model and resolution
No free tier is listed on the pricing page

FLUX (Black Forest Labs) のクイックスタートと実践のコツ

クイックスタート

1
Call the API from a single server-side key and generate one image with a fixed seed and size first, so you have a reproducible baseline before wiring it into product UI.
2
Test text rendering and multi-reference editing with real content early: these decide whether a prompt-only setup is enough for your product.
3
Decide hosting after that baseline: the hosted API covers most features, while self-hosted weights add GPUs, scaling, and licensing work.

実践のコツ

Make model version, seed, and size part of the request record, not loose settings. When output drifts after a model update, logged requests let you diff old against new; without them you cannot tell a prompt change from a model change. Reserve self-hosted weights for volume or data-residency needs, because GPU operations usually cost more than the API at low traffic.