Introducing WaveSpeedAI Longcat Avatar on WaveSpeedAI

Introducing LongCat Avatar: Ultra-Realistic Audio-Driven Video Generation Now on WaveSpeedAI

The demand for lifelike digital humans has never been higher. From corporate training videos and marketing campaigns to content creation and customer service, businesses are seeking ways to produce professional talking avatar videos at scale—without the astronomical costs of traditional video production. Today, we’re thrilled to announce that LongCat Avatar is now available on WaveSpeedAI, bringing state-of-the-art audio-driven video generation to your fingertips.

What is LongCat Avatar?

LongCat Avatar is a cutting-edge AI model developed by Meituan’s LongCat research team that transforms static photos into remarkably realistic speaking or singing videos. Powered by a massive 13.6 billion parameter diffusion transformer architecture, this model represents a significant leap forward in digital human technology.

Unlike conventional talking head generators that often produce stiff, robotic movements, LongCat Avatar creates videos with natural dynamics, precise lip synchronization, and consistent identity preservation across extended sequences. The result is content that looks genuinely human—complete with subtle head movements, natural facial expressions, and body motion that responds organically to the audio input.

The model supports videos up to one minute in length at resolutions up to 720p, making it ideal for everything from quick social media clips to longer-form educational content.

Key Features

• Precise Lip Synchronization: Advanced audio analysis ensures mouth movements align perfectly with speech, preserving natural rhythm and pronunciation across 140+ languages
• Full-Body Coherence: Goes beyond just lips to capture realistic head movements, facial expressions, and posture changes that match the audio’s emotional content
• Rock-Solid Identity Preservation: Maintains consistent facial identity and visual style across every frame, eliminating the “drift” common in other solutions
• Natural Silent Behavior: Proprietary Disentangled Unconditional Guidance technology ensures subjects behave naturally during pauses and silent moments rather than freezing awkwardly
• Multi-Person Support: Create synchronized multi-speaker scenarios with consistent quality across all participants
• Singing Capability: Not limited to speech—animate subjects to sing along with musical audio tracks

Technical Innovations That Set It Apart

LongCat Avatar introduces three breakthrough technologies that address longstanding challenges in audio-driven video generation:

Reference Skip Attention strategically incorporates visual cues from reference images while preventing the rigid “copy-paste” artifacts that plague other methods. This means your avatar moves naturally while still looking exactly like the source image.

Cross-Chunk Latent Stitching eliminates the quality degradation that typically occurs when generating longer videos. Where other models produce increasingly blurry or inconsistent results over time, LongCat Avatar maintains pristine quality from the first frame to the last.

Disentangled Unconditional Guidance separates speech signals from body motion dynamics, ensuring subjects display natural idle behavior during pauses rather than freezing in place or exhibiting unnatural stillness.

These innovations have helped the model achieve state-of-the-art performance on industry-standard benchmarks including HDTF, CelebV-HQ, EMTD, and EvalTalker, with particularly strong scores in lip-sync accuracy and identity consistency.

Real-World Use Cases

Corporate Training and Onboarding

Create professional training videos featuring consistent presenter avatars across your entire curriculum. Update content instantly by simply recording new audio—no need to schedule filming sessions or worry about presenter availability.

Marketing and Advertising

Produce localized video campaigns at scale. With support for 140+ languages, you can create region-specific content featuring the same presenter speaking fluently in each target language.

Content Creation

YouTubers, podcasters, and social media creators can generate talking head content without appearing on camera. Perfect for privacy-conscious creators or those wanting to establish a consistent virtual persona.

Sales and Customer Service

Deploy AI-powered video responses for customer inquiries, product demonstrations, and personalized outreach campaigns. Create scalable video communication that feels personal and engaging.

Entertainment and Music

Animate photos to create singing performances, music videos, or entertainment content. The model’s ability to handle musical audio opens creative possibilities beyond traditional speech applications.

Education and E-Learning

Develop engaging educational content with virtual instructors who can deliver lessons in multiple languages while maintaining a consistent, friendly presence that students recognize and trust.

Getting Started on WaveSpeedAI

Using LongCat Avatar on WaveSpeedAI is straightforward:

1. Upload your audio file — Any speech or singing audio in a supported format
2. Upload your reference image — A clear photo of the person you want to animate
3. Add an optional prompt — Guide the expression, style, or pose if desired
4. Select your resolution — Choose between 480p ($0.15/5 seconds) or 720p ($0.30/5 seconds)
5. Set a seed value — For reproducible results when needed
6. Submit and download — Your video is ready in seconds, not minutes

Processing typically completes in 10-30 seconds of wall time per second of output video, depending on resolution and current queue load.

Why WaveSpeedAI?

Running LongCat Avatar on WaveSpeedAI gives you distinct advantages over self-hosting or other platforms:

• Zero Cold Starts: Your requests begin processing immediately—no waiting for infrastructure to spin up
• No GPU Management: Skip the complexity and cost of maintaining your own GPU infrastructure
• Predictable Pricing: Simple per-second billing with a 60-second cap means you always know your maximum cost upfront
• Ready-to-Use API: Integration takes minutes with our well-documented REST API
• Scalability: Handle any volume of requests without capacity planning headaches

Start Creating Today

LongCat Avatar represents a genuine leap forward in audio-driven video generation. The combination of ultra-realistic lip sync, natural body motion, and rock-solid identity preservation makes it one of the most capable digital human solutions available today.

Whether you’re producing corporate content, building the next viral social media presence, or scaling personalized video outreach, LongCat Avatar delivers the quality and consistency that professional applications demand.

Ready to bring your photos to life? Try LongCat Avatar on WaveSpeedAI and experience the future of AI-powered video generation. With transparent pricing starting at just $0.15 per 5 seconds, there’s never been a better time to explore what’s possible with audio-driven avatars.