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OpenAI Sora 2 Pro Characters: AI Large Language Models

Create consistent AI characters for your Sora 2 videos. Provide a previous video's task ID and a prompt to define or refine your character. Create consistent AI characters for your Sora 2 videos by defining or refining character identity across multiple video generations. Provide a previous Sora 2 video's task ID and a detailed prompt describing your character (appearance, personality, mannerisms, voice quality), and the model establishes that character as a reusable template for future video generations. Perfect for multi-scene narratives, character-driven storytelling, and branded video series that need consistent cast members. Ideal for filmmakers, content creators, marketing teams, and animation studios building character-rich video content. muapi's per-generation pricing lets you refine characters iteratively and create complex narratives without long-term subscriptions or expensive character development tools.

Interactive model controls

Create consistent AI characters for your Sora 2 videos. Provide a previous video's task ID and a prompt to define or refine your character.

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Overview

About this model

Updated Jul 16, 2026

Create consistent AI characters for your Sora 2 videos by defining or refining character identity across multiple video generations. Provide a previous Sora 2 video's task ID and a detailed prompt describing your character (appearance, personality, mannerisms, voice quality), and the model establishes that character as a reusable template for future video generations. Perfect for multi-scene narratives, character-driven storytelling, and branded video series that need consistent cast members.

Ideal for filmmakers, content creators, marketing teams, and animation studios building character-rich video content. muapi's per-generation pricing lets you refine characters iteratively and create complex narratives without long-term subscriptions or expensive character development tools.

1Define a consistent AI spokesperson for a brand's video marketing series
2Establish a main character for a multi-episode narrative or story arc
3Refine a character's appearance, clothing, and personality across sequential scenes
4Create a cast of consistent characters for animated storytelling or educational video series
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Pricing & Value

Cost analysis

muapiapp$0.10 per generation

Transparent per-character-definition pricing with no subscription. At $0.10 per character, you can develop and iterate on complex casts for video narratives affordably.

** Competitor pricing is estimated based on similar model architectures and usage tiers.

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Technical Details

Configuration schema

Origin Task IDstring

The task ID of the original Sora video.

Default Value-
Character Namestring

A globally-unique handle for your character. Reference it in later prompts by prefixing it with @ (e.g., @sky_ranger).

Default Value-
Character Promptstring

In one short line, state stable traits (e.g., “cheerful barista, green apron, warm smile”); avoid camera directions, contradictions, or disallowed celebrity likeness.

Default Valuea young woman with short blue hair, wearing a silver flight suit, determined expression
Safety Instructionstring

Briefly list any boundaries (“no violence, politics, or alcohol; PG-13 max”); tighter wording helps the model enforce your content limits.

Default Value-
Start Timefloat

Enter the clip's start and end times in seconds. The segment you select must be completely inside the original video and between 1 s–4 s long; that slice will be used as the character's training material.

Default Value-
End Timefloat

Enter the clip's start and end times in seconds. The segment you select must be completely inside the original video and between 1 s–4 s long; that slice will be used as the character's training material.

Default Value-
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Implementation Guide

Developer documentation

  1. Generate an initial Sora 2 video featuring your character, then note its task ID. 2. Use that origin_task_id as input to lock in the character's appearance and identity. 3. Assign a character_user_name—a memorable label for this character (e.g., 'luna-the-guide' or 'tech-expert-alice'). 4. Write a detailed prompt describing the character you're defining or refining: appearance (age, clothing, hair), personality traits, speaking style, and any distinctive mannerisms. 5. Optionally set safety_instruction to configure content guardrails, and specify start_time and end_time if you want to use only a segment of the reference video. 6. Submit—the model establishes this character for future video generations.
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Common Questions

Frequently asked

What does character definition cost?

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.

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

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.

Can I modify a character after defining it?

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.