Question 1

What is Wan 2.5 Preview?

Accepted Answer

Wan 2.5 Preview is Alibaba's latest AI text-to-video generation model, supporting 16:9 aspect ratio at up to 1080p resolution with built-in negative prompts, prompt expansion, and seed control for reproducible results. It generates synchronized native audio alongside video, producing dialogue, sound effects, and ambient noise in a single generation pass. The model is designed for content creators who need affordable, high-quality video generation with flexible creative controls and the reliability of reproducible outputs through seed management.

Question 2

What resolution and duration does Wan 2.5 Preview support?

Accepted Answer

Wan 2.5 Preview generates 5-second videos at 16:9 aspect ratio with resolutions up to 1080p. It supports negative prompts to exclude unwanted elements, prompt expansion for enhanced prompt understanding, and seed control for reproducible generations. The model also generates synchronized native audio including dialogue, sound effects, and ambient noise. These controls give creators multiple ways to shape their output for consistent, high-quality results.

Question 3

How do negative prompts work in Wan 2.5 Preview?

Accepted Answer

Negative prompts allow you to specify what you do not want in the generated video, providing fine-grained quality control. For example, adding terms like 'low resolution, blurry, distorted faces, or artifacts' instructs the model to actively avoid these issues. Negative prompts work by guiding the generation process away from unwanted concepts and visual characteristics. This feature is especially useful for reducing common AI video artifacts and improving overall output quality.

Question 4

What is Prompt Expansion in Wan 2.5 Preview?

Accepted Answer

Prompt Expansion is a feature that automatically enhances your input prompt with additional descriptive details for better video generation results. When enabled, it analyzes your creative intent and adds relevant details about lighting, camera movement, scene composition, and atmospheric effects. This helps the model better understand your vision and produce more detailed, higher-quality videos. It is especially helpful for users who write short or simple prompts and want creative details filled in automatically.

Question 5

Can I control reproducibility with seeds?

Accepted Answer

Yes, Wan 2.5 Preview supports the seed parameter for reproducible generation. Setting a fixed seed value allows you to reproduce the same video output for a given prompt, which is useful for iterating on results, maintaining consistency across related generations, and sharing reproducible examples. Seed control means you can make small prompt adjustments while keeping the base generation consistent, enabling systematic creative exploration. This is particularly valuable for professional workflows where stakeholders need to review and compare specific variations.

Question 6

Does Wan 2.5 generate audio alongside video?

Accepted Answer

Yes, it is one of the few AI video models that generates synchronized audio natively alongside video. It produces dialogue, sound effects, and ambient noise in a single generation pass, eliminating the need for separate audio tools or post-production syncing. The native audio integrates naturally with the visual content, creating coherent audiovisual experiences. This built-in capability streamlines the video creation workflow significantly, saving time and production resources compared to multi-tool approaches.

Question 7

How does Wan 2.5 compare to Veo 3?

Accepted Answer

Wan 2.5 is more affordable and open-source, making it ideal for volume production and budget-conscious creators. Veo 3 offers a higher quality ceiling with 4K output and superior visual fidelity, but at a significantly higher price point. For most content creators, this model provides the best value-to-quality ratio at its resolution tier. Both support native audio generation. Choose it for high-volume social media content and iterative workflows, and Veo 3 when maximum production quality and resolution justify the premium cost.

Wan 2.5 Preview
Advanced Prompt Control & Bilingual Audio

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Frequently Asked Questions

Ready to Create?

What Is Wan 2.5 Preview?

Key Features

Text-to-Video Generation

Advanced Prompt Control

Reproducible & Consistent

Wan 2.5 Preview vs Other Video Models

Cinematic Content

Creative Iteration

Bilingual Production

Marketing Videos

How to Use Wan 2.5 on VesperAPI

1. Write Your Scene Prompt

2. Configure Output

3. Generate and Download

What Wan 2.5 Excels At

Audio-Visual Storytelling

Affordable Volume Production

Cinematic Short Films

Tips for Best Results

#1Describe Motion Explicitly

#2Include Audio Cues in Prompts

#3Use Image-to-Video for Coherence

#4Keep One Scene Per Generation

#5Leverage Negative Prompts

Wan 2.5 in Action

Bilingual Prompt Support

Wan 2.5 PreviewAdvanced Prompt Control & Bilingual Audio