FLUX.2 [klein] 9B Base LoRA

FLUX.2 [klein] 9B Base LoRA exposes the FLUX.2 Klein 9B Base Edit LoRA capability for reference-led image revision. The undistilled Base architecture retains full training signal and higher output diversity for adaptation and research. A lightweight adapter adds a learned style, subject, or domain concept to this exact path.

Use this 9B route when a stronger quality-to-speed balance and more complex visual understanding matter. Describe the requested change separately from source identity, geometry, and regions that must remain fixed. Choose the Base form for fine-tuning or diverse research outputs rather than minimum inference latency.

Highlights

• FLUX.2 Klein 9B Base Edit LoRA architecture. Uses the undistilled 9B foundation with full training signal and diverse output behavior.
• Unified contextual editing. Understands source content and applies directed semantic or appearance changes.
• Adapter-based specialization. Expresses a learned style, character, object, or domain through a lightweight adaptation.
• Reference consistency. Preserves important subject, composition, and detail through the requested revision.

Pricing

When to Use

Prompt Guide

Write a complete visual brief: identify the subject and references, define composition and viewpoint, describe lighting, palette, materials, typography, and finish, then list exact preservation constraints. FLUX.2 Klein does not rely on prompt upsampling, so use clear descriptive sentences rather than sparse keywords.

{
  "prompt": "A photorealistic editorial composition with precise subject placement, controlled lighting, exact colors, and clean typography",
  "seed": 1,
  "loras": [],
  "images": [
    "https://example.com/reference.jpg"
  ]
}

Technical Specs

Related Models

• bfl/flux-2/klein/4b
• bfl/flux-2/klein/4b/base
• bfl/flux-2/klein/4b/base/edit