FLUX Models Overview
Last updated: April 2, 2026
FLUX Models Overview
Black Forest Labs offers two model families: FLUX.2 (our latest generation) and FLUX.1 (including Kontext and FLUX1.1 variants).
FLUX.2 — Latest Generation
Our most advanced image generation and editing models. All FLUX.2 models support resolutions up to 4MP, multi-reference editing, precise hex color control, and reliable text rendering.
FLUX.2 [klein] — Fastest
Sub-second inference for real-time applications. Available in two sizes:
Variant | Parameters | License | Price (API) |
[klein] 4B | 4 Billion | Apache 2.0 (fully open) | from $0.014 |
[klein] 9B | 9 Billion | FLUX Non-Commercial | from $0.015 |
Runs on consumer GPUs
Unified generation and editing architecture
Up to 4 reference images
Available on Hugging Face for local deployment
FLUX.2 [pro] — Production Ready
Optimized for high-volume production workflows. Generates images in under 10 seconds.
Best balance of quality, speed, and cost
Up to 8 reference images (API) / 10 (Playground)
Text-to-image: from $0.03/MP | Editing: from $0.045/MP
FLUX.2 [max] — Highest Quality
Maximum quality with exclusive grounding search — performs web searches to incorporate real-time information into generated images.
Highest editing consistency and vast world knowledge
Up to 8 reference images (API) / 10 (Playground)
Text-to-image and editing: from $0.07/MP
FLUX.2 [flex] — Fine-Grained Control
Maximum control with adjustable inference steps (up to 50) and guidance scale. Best text rendering for typography-heavy use cases.
Adjustable steps and guidance for precise control
Text-to-image: $0.05/MP | Editing: $0.10/MP
FLUX.2 [dev] — Open Weights
Free for non-commercial use. Run locally on your own infrastructure.
FLUX.1 Kontext — Context-Aware Editing
Combines text-to-image generation with advanced image editing in a single model. Edit specific parts of images, maintain character consistency, and transform styles with simple text prompts.
Model | Best For | Price |
Kontext [max] | Highest quality, industry-leading typography | $0.08/image |
Kontext [pro] | Fast production (5-6 sec), unified editing & generation | $0.04/image |
Kontext [dev] | Open weights, editing mode only, non-commercial | Free |
FLUX1.1 — Text-to-Image
Model | Description | Price |
FLUX1.1 [pro] | Fast, reliable text-to-image generation | $0.04/image |
FLUX1.1 [pro] Ultra | Ultra high-resolution up to 4MP | $0.06/image |
Tools
Model | Description | Price |
FLUX.1 Fill [pro] | Inpainting and outpainting with text prompts and masks | $0.05/image |
Which Model Should I Use?
Real-time generation? → FLUX.2 [klein]
Production workflows? → FLUX.2 [pro]
Highest quality? → FLUX.2 [max]
Typography and fine control? → FLUX.2 [flex]
Image editing with text prompts? → FLUX.1 Kontext [pro] or FLUX.2 with references
Running locally? → FLUX.2 [klein] 4B (Apache 2.0) or FLUX.1 Kontext [dev]
For full documentation, visit docs.bfl.ai.