Promptkoi

Best Flux Prompts

The best Flux prompts are natural, well-ordered sentences that describe the scene, the lighting, and the camera — Black Forest Labs' model family follows them closely and has become the go-to choice for photoreal skin, hands, fabric, and even in-image text. It also follows prompts closely, which changes how you should write them — natural, well-ordered sentences that describe the scene, the lighting, and the camera beat keyword soup nearly every time, and traditional negative prompts matter far less than they do with Stable Diffusion. The prompts in this hub note which Flux variant we tested (dev, pro, or schnell), the guidance and step settings used, and what to rephrase when the model takes an instruction a little too literally.

Prompts in this collection

Frequently asked questions

How do you write good Flux prompts?
Write natural, well-ordered sentences that describe the scene, then the lighting, then the camera — Flux's text encoder rewards structured plain English over keyword soup. Name materials and light sources explicitly ("single softbox", "wet slate"); that specificity is what unlocks its photorealism.
What guidance and steps should I use with Flux?
Guidance around 3.5 is the sweet spot for Flux.1 dev — higher values turn harsh and overcooked, lower drifts dreamy — with roughly 28 steps. Flux has no true negative-prompt channel, so phrase what you want positively instead of listing what to avoid.
Is Flux better than Stable Diffusion?
Flux.1 dev generally beats SDXL on photorealism, hands, and legible in-image text out of the box, while Stable Diffusion keeps the edge in fine control: negative prompts, seeds, samplers, and thousands of community checkpoints. Pick Flux for realism with minimal tuning, SDXL for maximum control.