FLUX Best Practices

Use this skill when generating prompts for any BFL FLUX model to ensure optimal image quality and accurate prompt interpretation.

Extended reference: AGENTS.md in this directory is the long-form upstream FLUX guide (vendored from Black Forest Labs). It is supplementary reference material scoped to this skill only, SKILL.md is the loadable entry point and the authority. It does not override or extend the repository-root AGENTS.md / AGENT_GUIDE.md.

When to Use

• Creating prompts for FLUX.2 or FLUX.1 models
• Text-to-image (T2I) generation
• Image-to-image (I2I) editing with FLUX.2 models
• Structured scene generation with JSON
• Typography and text rendering
• Multi-reference style transfer
• Color-accurate brand generations

Quick Reference

Prompt Structure Formula

[Subject] + [Action/Pose] + [Style/Medium] + [Context/Setting] + [Lighting] + [Camera/Technical]

Model Selection

Use Case	Recommended Model	Notes
Fastest generation	FLUX.2 [klein]	4B or 9B, sub-second
Highest quality	FLUX.2 [max]	Best detail, grounding search
Production balanced	FLUX.2 [pro]	Quality + speed
Typography/text	FLUX.2 [flex]	Best text rendering
Local/development	FLUX.2 [dev]	Open weights
Image editing	FLUX.2 [pro/max]	Pass image URL directly to input_image
Inpainting	FLUX.1 Fill	Object removal/completion
Context editing	FLUX.1 Kontext	Older model, prefer FLUX.2

Critical Rules