Home/Models/Replicate/Black Forest Labs/FLUX 2 DEV
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Black Forest Labs/FLUX 2 DEV

Par requête:$0.06
FLUX 2 DEV est la version adaptée aux développeurs, optimisée pour la recherche, l’expérimentation et les applications non commerciales. Elle offre aux développeurs de puissantes capacités de génération d’images tout en maintenant un équilibre entre la qualité et l’efficacité de calcul. Parfait pour le prototypage, la recherche académique et les projets créatifs personnels.
Nouveau
Usage commercial
Aperçu
Fonctionnalités
Tarification
API

Key features (what Flux.2 Dev does)

  • Text→Image generation with high prompt adherence and improved typography / small-detail rendering.
  • Multi-reference editing — combine multiple reference images into a single output, preserving identity/style consistency
  • Single checkpoint for generation + editing (no separate editing model required).
  • Large open-weight checkpoint (32B) permitting local research, quantization, and community adaptation.)
  • Optimized VAE for an improved learnability–quality–compression tradeoff (enables 4MP editing/outputs).

Technical details (architecture & engineering)

  • Parameter count: 32 billion parameters for the FLUX.2 checkpoint.
  • Core design: latent flow-matching / rectified flow transformer combined with a vision-language model (BFL says they couple a Mistral-3 24B VLM with the transformer backbone for semantic grounding). The VLM contributes world knowledge and textual grounding while the transformer models spatial/compositional structure.
  • VAE: new FLUX.2 VAE (released under Apache-2.0) retrained to improve reconstruction fidelity and latent learnability, enabling high-resolution editing.
  • Sampling & distillation: trained using guidance-distillation techniques to improve inference efficiency and fidelity.

Benchmark performance

Black Forest Labs published comparative evaluations and charts showing FLUX.2’s performance vs. contemporary open-weight and hosted image models. Key published figures (BFL / press summaries):

  • Text-to-image win rate: FLUX.2 ~66.6% (vs. Qwen-Image 51.3%, Hunyuan ~48.1% in BFL’s head-to-head dataset).
  • Single-reference editing win rate: FLUX.2 ~59.8% (vs. Qwen-Image 49.3%, FLUX.1 Kontext ~41.2%).
  • Multi-reference editing win rate: FLUX.2 ~63.6% (vs. Qwen-Image 36.4%). BFL also reports multi-reference capability up to 10 references in their evaluation suite.

Typical / recommended use cases

  • Ad and marketing image variants where the same model/actor/product must remain consistent across many scenes or backgrounds (multi-reference consistency).
  • Product photography & virtual try-on (preserve product details across backgrounds).
  • Editorial/fashion spreads requiring the same identity across many shots.
  • Rapid prototyping and research (dev checkpoint allows experimentation, fine-tuning and LoRA/adapter workflows).

How to access Flux.2 dev API

Step 1: Sign Up for API Key

Log in to cometapi.com. If you are not our user yet, please register first. Sign into your CometAPI console. Get the access credential API key of the interface. Click “Add Token” at the API token in the personal center, get the token key: sk-xxxxx and submit.

Flux.2 Dev API

Step 2: Send Requests to Flux.2 dev API

Select the “black-forest-labs/flux-2-dev ”endpoint to send the API request and set the request body. The request method and request body are obtained from our website API doc. Our website also provides Apifox test for your convenience. Replace <YOUR_API_KEY> with your actual CometAPI key from your account.

Insert your question or request into the content field—this is what the model will respond to . Process the API response to get the generated answer.

Step 3: Retrieve and Verify Results

Process the API response to get the generated answer. After processing, the API responds with the task status and output data.

CometAPI Now Supporting Replicate Format Models: 🔹 black-forest-labs/flux-2-pro 🔹 black-forest-labs/flux-2-dev 🔹 black-forest-labs/flux-2-flex

Limited Time Promotion: Lower than Replicate Official Pricing!

👇 Start Building Now Create Predictions – API Doc

⚡ Flexible Selection:

  • Pro: Designed for high-efficiency production and fast delivery.
  • Flex: Maximizes image quality with adjustable parameters.
  • Dev: Developer-friendly optimization.

FAQ

Is FLUX.2 [dev] free to use?

Yes, FLUX.2 [dev] is available for free for non-commercial local development and testing purposes.

Can I use FLUX.2 [dev] for commercial projects?

No, FLUX.2 [dev] is strictly licensed for non-commercial use. For commercial applications, you should use the [pro], [flex], or [max] API models.

Where can I download the FLUX.2 [dev] weights?

The weights for FLUX.2 [dev] are available for download on HuggingFace for local inference deployment.

What are the hardware requirements for running FLUX.2 [dev] locally?

While exact requirements vary, local development typically requires a high-performance GPU with significant VRAM (e.g., 24GB+) to handle the model's architecture efficiently.

Does FLUX.2 [dev] support the same features as the API models?

FLUX.2 [dev] allows for full customization and supports core features like text-to-image and basic editing, but lacks cloud-exclusive features like grounding search found in [max].

What is the recommended multi-reference limit for FLUX.2 [dev]?

For local development with FLUX.2 [dev], the documentation recommends using a maximum of 6 reference images, compared to 8-10 supported via the API.

Can I fine-tune FLUX.2 [dev]?

Yes, as an open-weight model, FLUX.2 [dev] serves as a base for community fine-tuning and developing custom LoRAs.

Fonctionnalités pour Black Forest Labs/FLUX 2 DEV

Découvrez les fonctionnalités clés de Black Forest Labs/FLUX 2 DEV, conçues pour améliorer les performances et la facilité d'utilisation. Explorez comment ces capacités peuvent bénéficier à vos projets et améliorer l'expérience utilisateur.

Tarification pour Black Forest Labs/FLUX 2 DEV

Découvrez des tarifs compétitifs pour Black Forest Labs/FLUX 2 DEV, conçus pour s'adapter à différents budgets et besoins d'utilisation. Nos formules flexibles garantissent que vous ne payez que ce que vous utilisez, ce qui facilite l'adaptation à mesure que vos besoins évoluent. Découvrez comment Black Forest Labs/FLUX 2 DEV peut améliorer vos projets tout en maîtrisant les coûts.
Prix de Comet (USD / M Tokens)Prix officiel (USD / M Tokens)Remise
Par requête:$0.06
Par requête:$0.075
-20%

Exemple de code et API pour Black Forest Labs/FLUX 2 DEV

Accédez à des exemples de code complets et aux ressources API pour Black Forest Labs/FLUX 2 DEV afin de simplifier votre processus d'intégration. Notre documentation détaillée fournit des instructions étape par étape pour vous aider à exploiter tout le potentiel de Black Forest Labs/FLUX 2 DEV dans vos projets.
Python
JavaScript
Curl
import os
import requests

COMETAPI_KEY = os.environ.get("COMETAPI_KEY") or "<YOUR_COMETAPI_KEY>"

url = "https://api.cometapi.com/replicate/v1/models/black-forest-labs/flux-2-dev/predictions"

headers = {
    "Authorization": f"Bearer {COMETAPI_KEY}",
    "Content-Type": "application/json"
}

payload = {
    "input": {
        "prompt": "A sleek silver sports car racing along a coastal highway at sunset, hyper-realistic, cinematic lighting, 8k",
        "input_images": [
            "https://replicate.delivery/pbxt/O7kbtH7wgLIItlCyeWjm0fgPpx7OpGsT9VbYyxBXnfieVxQe/woman-by-car.jpg"
        ],
        "go_fast": True,
        "aspect_ratio": "16:9",
        "output_format": "jpg",
        "output_quality": 90,
        "seed": 42
    }
}

response = requests.post(url, headers=headers, json=payload)
result = response.json()

print(f"Status Code: {response.status_code}")
print(f"Task ID: {result.get('id')}")
print(f"Status: {result.get('status')}")
print(f"Model: {result.get('model')}")

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