Train a character model"

Create an AI character that can act, emote, and star in your videos—trained from your own images or designs.

The “Train an AI Actor” feature lets you create a personalized AI character model (also known as a “custom model”) that can appear in any of your generated videos.

Step 1: Go to the Models tab → click “Train New Model”

You’ll be asked to select either Character or Style model. Select 'Character' and proceed

Step 2: Add basic info

Name your model and set a “Trigger Word” (e.g., "KIA_01" or "ZARA_S2"). This helps the system recognize which model to use in prompts.

Step 3: Upload your images

Upload 5–50 images of your character. Ensure the images are visually consistent. For character models, try showing a range of angles and facial expressions. You can also upload an optional .txt caption file (same filename as each image) for better training.

Step 4: Review captions

You'll be prompted to review, edit, or generate captions for your images. Captions help the system learn context and appearance. Make sure your Trigger Word appears in every caption.

Step 5: Finalize and train

Once ready, hit “Next”. Your model will begin training. You’ll see status: Draft → Training → Trained. This usually takes a few minutes.

Using Your AI Actor
Once your model is trained, it will appear in your Model Gallery and will be available in:
* Visual generation (image prompts or scene visuals)
* Character selection

FAQ

How many AI actors can I train?
Each workspace can train multiple actors. There's no limit to how many actors you can train.

What formats can I upload?
JPG, JPEG, or PNG for the images, TXT file for captions. Each image should be under 50MB.

What makes a good training image?
Well-lit, clear images of the same character from multiple angles. Avoid blur, heavy filters, or inconsistent lighting.

Can I retrain or improve a model later?
Not yet—but retrain from scratch with better captions or images for better results.

Can I delete a model later?
Yes, just contact us on live chat or drop us a note on support@atlabs.ai

Updated on: 10/23/2025