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Flux 2 Flex Result
Flux 2 Flex – Fast & Flexible Image Generation & Editing by Black Forest Labs
Flux 2 Flex is a lightweight, fast model for high-quality image generation and editing with up to 10 reference images. Features adjustable quality steps, fine-tuned guidance, crisp typography, and clean color work for quick iterations.
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Flux 2 Flex FAQ
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What is Flux 2 Flex?
Flux 2 Flex is Black Forest Labs' lightweight, fast-running model for high-quality image generation and editing. It balances speed and quality with adjustable inference steps and supports up to 10 reference images.
What are the key features?
Adjustable quality steps for speed/fidelity trade-off, fine-tuned guidance scale, multi-reference editing with up to 10 images, excellent text rendering, JSON-structured prompts for precise control, and 1024×1024 PNG output.
How do I write effective prompts?
Use positive constraints only. Good: 'A close-up portrait of a woman wearing a blue dress, clean background.' Bad: 'portrait, --no text, --no extra fingers.' The model ignores negative prompts.
What is adjustable quality?
Choose how many inference steps to run. Fewer steps mean faster results, more steps mean higher fidelity. This lets you balance speed and quality based on your needs.
How does multi-reference editing work?
Upload up to 10 reference images (total ≤ 14 MB) for style transfer, inpainting, or compositing. The model maintains consistency across references for cohesive results.
What about JSON prompting?
Structure prompts as JSON with keys like scene, subjects, style, lighting, and camera. This gives precise control over composition. Plain text works too for quick iterations.
What formats are supported?
Accepts PNG or JPEG inputs. Outputs 1024×1024 PNG images. The model excels at lettering, captions, infographics, and clean typography in generated images.
Is Flux 2 Flex free to use?
Yes. Free credits are included for new users. Buy additional credits or subscribe for more usage. Unused credits don't expire, and failed jobs are auto-refunded. See Pricing for model plans.