fal-train

Train custom LoRA models on fal.ai for personalized AI generation.

Scripts

| Script | Purpose | |--------|---------| | train.sh | Submit a LoRA training job |

Usage

Train Image LoRA (Style/Subject/Person)

./scripts/train.sh --images-url "https://example.com/training-images.zip" --trigger-word "sks style" --model fal-ai/flux-lora-fast-training

Train Portrait LoRA

./scripts/train.sh --images-url "https://example.com/face-photos.zip" --trigger-word "ohwx person" --model fal-ai/flux-lora-portrait-trainer

Check Training Status

./scripts/train.sh --status --endpoint fal-ai/flux-lora-fast-training --request-id "abc123"

Arguments

| Argument | Description | Required | |----------|-------------|----------| | --images-url | URL to zip of training images | Yes | | --trigger-word | Word to activate the LoRA in prompts | Yes | | --model / -m | Training model endpoint | No (default: fal-ai/flux-lora-fast-training) | | --steps | Training steps | No (default: 1000) | | --status | Check training job status | No | | --endpoint | Endpoint for status check | With --status | | --request-id | Request ID for status check | With --status | | --param | Extra param as key=value (repeatable) | No |

Finding Models

To discover the best and latest training/LoRA models, use the search API:

# Search for LoRA training models
bash /mnt/skills/user/fal-generate/scripts/search-models.sh --query "lora training"
bash /mnt/skills/user/fal-generate/scripts/search-models.sh --query "trainer"
bash /mnt/skills/user/fal-generate/scripts/search-models.sh --query "fine-tune"

Or use the search_models MCP tool with keywords like "lora", "training", "trainer", "fine-tune".

Training Data Tips

• People: 10-20 photos, varied angles/lighting/expressions, consistent person
• Styles: 10-15 images exemplifying the style, diverse subjects
• Objects: 5-15 photos from different angles on various backgrounds
• Images should be high quality, at least 512x512
• Zip all images into a single .zip file and host at a URL

Output Format

{
  "diffusers_lora_file": {
    "url": "https://fal.media/files/.../lora.safetensors",
    "content_type": "application/octet-stream",
    "file_name": "lora.safetensors",
    "file_size": 12345678
  },
  "config_file": {
    "url": "https://fal.media/files/.../config.json"
  }
}

Use the diffusers_lora_file.url as the lora_url parameter when generating images with FLUX models.