NVIDIA Image Generation
Generate and edit images using NVIDIA's FLUX models.
Models
| Model |
Use Case |
Speed |
Quality |
dev |
High-quality text-to-image |
Normal |
Best |
schnell |
Fast text-to-image |
Fast |
Good |
kontext |
Image editing |
Normal |
Best |
Quick Start
# Generate an image
python scripts/generate.py "A cute cat in space"
# Edit an existing image
python scripts/generate.py "Add sunglasses" -i photo.jpg -o edited.png
Parameters
Text-to-Image (dev/schnell)
| Parameter |
Short |
Default |
Description |
prompt |
|
(required) |
Text description |
-o, --output |
|
output.png |
Output file path |
--width |
|
1024 |
Output width in pixels |
--height |
|
1024 |
Output height in pixels |
--aspect-ratio |
-ar |
1:1 |
Aspect ratio preset |
--steps |
-s |
30 |
Diffusion steps |
--seed |
|
0 |
Random seed (0=random) |
--model |
-m |
auto |
Model selection |
Image Editing (kontext)
| Parameter |
Short |
Default |
Description |
prompt |
|
(required) |
Edit instruction |
-i, --input |
|
(required) |
Input image path |
-o, --output |
|
output.png |
Output file path |
--steps |
-s |
30 |
Diffusion steps |
--cfg |
|
3.5 |
Guidance scale |
--seed |
|
0 |
Random seed |
Supported Aspect Ratios
| Ratio |
Resolution |
| 1:1 |
1024×1024 |
| 16:9 |
1344×768 |
| 9:16 |
768×1344 |
| 4:3 |
1216×832 |
| 3:4 |
832×1216 |
Examples
Basic Generation
python scripts/generate.py "A mountain landscape at sunset"
Wide Format (16:9)
python scripts/generate.py "A panoramic beach view" -ar 16:9
Portrait Mode (9:16)
python scripts/generate.py "A professional headshot" -ar 9:16
Custom Size
python scripts/generate.py "A banner image" --width 1344 --height 768
Fast Generation
python scripts/generate.py "Quick sketch of a robot" -m schnell
Edit an Image
python scripts/generate.py "Make the background a sunset" -i input.jpg -o output.png
Reproducible Results
python scripts/generate.py "A robot" --seed 12345
Output
The script outputs MEDIA:/path/to/image.png which can be sent directly to chat.
API Key
The API key is embedded in the script. To use a different key, set the NVIDIA_API_KEY environment variable.
