Question 1

What does character definition cost?

Accepted Answer

Defining or refining a Sora 2 Pro character costs $0.10 per operation on muapi. Each character definition or refinement is a single $0.10 charge, and you can reuse that character across unlimited subsequent video generations.

Question 2

How do I reuse a character once it's defined?

Accepted Answer

Once you've created a character profile with a character_user_name, reference that name in future Sora 2 video prompts. The model will maintain consistency with the original character definition across all videos in your project.

Question 3

Can I modify a character after defining it?

Accepted Answer

Yes, you can refine or update a character by providing the same character_user_name with a new prompt describing adjustments (different outfit, updated personality traits, etc.). Each refinement is another $0.10 charge.