Recommended Parameters for Image Generation Models
GPUStack currently does not support GGUF image generation models that are not all-in-one (base model, text encoder, and VAE combined). Please refer to the supported model list for details:
The core parameters of image generation models are key to achieving desired outputs. These include Prompt, Seed, Resolution, Sampler, Scheduler, Sampling Steps and CFG scale.
Different models may have variations in parameter settings. In order to quickly get started and generate satisfying images, the following section is going to provide some reference values for parameter configurations.
FLUX.1-dev
For FLUX models, it is recommended to disable CFG (CFG=1) for better results.
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | euler |
| Scheduler | discrete |
| Steps | 20 |
| CFG | 1.0 |
Recommended samplers: euler, heun, ipndm, ipndm_v
Recommended scheduler: discrete
✏️Try it out!
Prompt: A kangaroo holding a beer,wearing ski goggles and passionately singing silly songs.
Size: 1024x1024
Sampler: euler
Scheduler: discrete
Steps: 20
CFG: 1.0
Seed: 838887451
Using LoRA
Configuration: Edit model -> Advanced -> Backend Parameters -> Add --lora=<path/to/your/lora_file>
The top row shows the original images, while the bottom row displays the corresponding images generated using LoRA.
Note
LoRA is currently an experimental feature. Not all models or LoRA files are compatible.
FLUX.1-schnell
For FLUX models, it is recommended to disable CFG (CFG=1) for better results.
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | euler |
| Scheduler | discrete |
| Steps | 2-4 |
| CFG | 1.0 |
Recommended samplers: euler, dpm++2mv2, ipndm_v
Recommended scheduler: discrete
✏️Try it out!
Prompt: A mischievous ferret with a playful grin squeezes itself into a large glass jar, surrounded by colorful candy. The jar sits on a wooden table in a cozy kitchen, and warm sunlight filters through a nearby window
Size: 1024x1024
Sampler: euler
Scheduler: discrete
Steps: 3
CFG: 1.0
Seed: 1565801500
Stable-Diffusion-v3-5-Large
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | euler |
| Scheduler | discrete |
| Steps | 25 |
| CFG | 4.5 |
Recommended samplers: dpm++2m, ipndm, ipndm_v, dpm++2mv2, eluer, heun, dpm2
Recommended scheduler: discrete
✏️Try it out!
Prompt: Lucky flower pop art style with pink color scheme,happy cute girl character wearing oversized headphones and smiling while listening to music in the air with her eyes closed,vibrant colorful Japanese anime cartoon illustration with bold outlines and bright colors,colorful text "GPUStack" on top of background,high resolution,detailed,
Size: 1024x1024
Sampler: dpm++2m
Scheduler: discrete
Steps: 25
CFG: 5
Seed: 3520225659
Stable-Diffusion-v3-5-Large-Turbo
For turbo models, it is recommended to disable CFG (CFG=1) for better results.
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | euler/dpm++2m |
| Scheduler | discrete/exponential |
| Steps | 5/15-20 |
| CFG | 1.0 |
Recommended samplers: euler, ipndm, ipndm_v, dpm++2mv2, heun, dpm2, dpm++2m
Recommended scheduler: discrete, karras, exponential
✏️Try it out!
Prompt: This dreamlike digital art captures a vibrant, kaleidoscopic bird in a lush rainforest
Size: 768x1024
Sampler: heun
Scheduler: karras
Steps: 15
CFG: 1.0
Seed: 2536656539
Stable-Diffusion-v3-5-Medium
Reference settings:
| Parameter | Value |
|---|---|
| Size | 768x1024 |
| Sampler | euler |
| Scheduler | discrete |
| Steps | 28 |
| CFG | 4.5 |
Recommended samplers: euler, ipndm, ipndm_v, dpm++2mv2, heun, dpm2, dpm++2m
Recommended scheduler: discrete
✏️Try it out!
Prompt: Plush toy, a box of French fries, pink bag, long French fries, smiling expression, round eyes, smiling mouth, bright colors, simple composition, clean background, jellycat style,
Negative Prompt: ng_deepnegative_v1_75t,(badhandv4:1.2),EasyNegative,(worst quality:2)
Size: 768x1024
Sampler: euler
Scheduler: discrete
Steps: 28
CFG: 4.5
Seed: 3353126565
Stable-Diffusion-v3-Medium
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | euler |
| Scheduler | discrete |
| Steps | 25 |
| CFG | 4.0 |
Recommended samplers: euler, ipndm, ipndm_v, dpm++2mv2, heun, dpm2, dpm++2m
Recommended scheduler: discrete
✏️Try it out!
Prompt: A guitar crafted from a watermelon, realistic, close-up, ultra-HD, digital art, with smoke and ice cubes, soft lighting, dramatic stage effects of light and shadow, pastel aesthetic filter, time-lapse photography, macro photography, ultra-high resolution, perfect design composition, surrealism, hyper-imaginative, ultra-realistic, ultra-HD quality
Size: 768x1280
Sampler: euler
Scheduler: discrete
Steps: 30
CFG: 5.0
Seed: 1937760054Tip
The default maximum image height is 1024. To increase it, edit the model and add the backend parameter --image-max-height=1280 in the advanced settings.
SDXL-base-v1.0
Reference settings:
| Parameter | Value |
|---|---|
| Size | 1024x1024 |
| Sampler | dpm++2m |
| Scheduler | karras |
| Steps | 25 |
| CFG | 5.0 |
Recommended samplers: euler, ipndm, ipndm_v, dpm++2mv2, heun, dpm2, dpm++2m
Recommended scheduler: discrete, karras, exponential
✏️Try it out!
Prompt: Weeds blowing in the wind,By the seaside,Ultra-realistic,Majestic epic scenery,excessively splendid ancient rituals,vibrant,beautiful Eastern fantasy,bright sunshine,pink peach blossoms,daytime perspective.
Negative Prompt: ng_deepnegative_v1_75t,(badhandv4:1.2),EasyNegative,(worst quality:2),
Size: 768x1280
Sampler: dpm++2m
Scheduler: exponential
Steps: 30
CFG: 5.0
Seed: 3754742591
Stable-Diffusion-v2-1-Turbo
For turbo models, it is recommended to disable CFG (CFG=1) for better results.
Reference settings:
| Parameter | Value |
|---|---|
| Size | 512x512 |
| Sampler | euler_a |
| Scheduler | discrete |
| Steps | 6 |
| CFG | 1.0 |
Recommended samplers: eluer_a, dmp++2s, lcm
Recommended scheduler: discrete, karras, exponential, ays, gits
✏️Try it out!
Prompt: A burger patty, with the bottom bun and lettuce and tomatoes.
Size: 512x512
Sampler: euler_a
Scheduler: discrete
Steps: 6
CFG: 1.0
Seed: 1375548153
Note
The parameters above are for reference only. The ideal settings may vary depending on the specific situation and should be adjusted accordingly.