The 2025 AI Digital Human Crown: More Real Than Reality?

WaveSpeedAI,Sat Sep 20 2025

Preface

Digital humans are no longer just sci-fi. From ByteDance’s OmniHuman to Kuaishou’s Kling, a wave of powerful products is rapidly advancing technology.

Most of them aim to deploy digital humans in real-world scenarios — live Q&A, pre-sales support, and on-camera hosting. But from those, you must realize that “does it look human?” is just the starting point.

As users, we care more about whether it can maintain continuous dialogue, whether expressions and gestures feel natural, and whether lip-sync performance is convincing. These factors determine if a digital human can truly take the lead.

In this review, we run head-to-head tests across real-world scenarios, comparing top products with our flagship platform, InfiniteTalk. We focus on features, user experience, and unique strengths.

So which one truly represents the next generation of digital humans? The answer is just ahead!

Basic Overview

InfiniteTalk

InfiniteTalk is WaveSpeedAI’s in-house digital human, designed for a flagship experience featuring long-form and dual-speaker interaction.

It provides natural expressions, solid lip-sync, and smooth transitions. It supports about 10 minutes per take. Requires just one image (single or double) and one or two voice tracks; perfect for virtual customer service, product launches, and tours.

Kling Digital Human

Built for quick, short-form output: one image + ≤ 60 seconds of audio to create a clip. Ideal for short videos, key updates, and rapid sharing.

OmniHuman

Positioned for ultra-short creation: one image + ≤ 30 seconds of audio. Best for snippets and intros/outros, but not ideal for prolonged, multi-turn interactions.

OK, now that the basics are covered, it’s time for the real tests. To ensure fairness, we’ll evaluate based on three key dimensions:

Lip-sync consistency — checking phoneme alignment, handling of liaison/linked speech, and ensuring natural pauses.
Facial expression richness and continuity — whether micro-expressions trigger appropriately and transitions feel natural.
Pose & fine-detail performance — including blinking, breathing, subtle head and shoulder movements, and smooth transitions.

We’ll run these checks across various business scenarios — explainers, customer-service dialogues, live hosting, and interview formats to produce conclusions that reflect real-world use.

Versus 1: Customer Service

Among all real-world deployments, virtual customer service is one of the most essential needs.

It can run 24/7, respond instantly to user requests, and quickly resolve common issues.

So that more complex or rare cases, which require judgment or empathy, can be sent to human agents. This allows them to focus on what truly needs a human touch.

Comparison Videos

WaveSpeedAI InfiniteTalk

Kling AI Avatar

OmniHuman

Across our scenario-based tests, InfiniteTalk (WaveSpeedAI) achieves the best balance of naturalness and stability in facial expressions, pose details, and overall look and feel.

It shows finer expression, smoother transitions, and consistent emotion–motion alignment even over long runs. Lip-sync may have occasional minor offsets, but simple script and audio pacing tweaks bring them well within an acceptable range.

Kling remains the stability champ, with hardly any drops or crashes. However, its facial expressions seem stiff, which reduces interaction energy and warmth.

OmniHuman 1.0 is decent but average, best suited for short, snippet-style outputs.

Versus 2: Film & Entertainment

When digital humans step onto the stage, the boundaries of entertainment are rewritten. Virtual actors and digital singers are no longer “stand-ins” but new creative forces — online 24/7, ready to join a shoot or perform whenever needed.

Digital Actor

WaveSpeedAI Digital Actor

Currently, Kling v1 AI Avatar and OmniHuman do not support two-person dialogue, making them unsuitable for “digital actor” scenarios that need character interaction and emotional exchange.

Digital Singer

WaveSpeedAI Digital Singer

Kling AI Avatar Digital Singer

OmniHuman Digital Singer

Digital humans can do more than have virtual actors speak their lines. They can also turn dialogue into melody — perfectly supporting the digital singer’s use case.

In terms of facial expression and pose richness, InfiniteTalk excels with more natural micro-expressions and smoother motion transitions. OmniHuman is generally average, while Kling appears stiff with limited emotional range.

For lip-sync consistency, OmniHuman leads, Kling follows, and InfiniteTalk lags slightly on certain phonemes and linked speech.

Versus 3: E-commerce Live

With virtual livestreaming, you can “go live from one photo.” A real-time avatar operates for extended periods, interacts around the clock, and reduces staffing needs while maintaining continuous content flow.

E-commerce Live Streaming Demo

Kling supports audio inputs up to 60 seconds, and OmniHuman up to 30 seconds. With these limits, neither can sustain long, continuous AI livestreams.

Versus 4: Talk-Driven Shows

Brief oral broadcast: (over 30 seconds, under 60 seconds).

OmniHuman only supports audio inputs up to 30 seconds, so it can’t reliably handle AI single-speaker recordings longer than that.

Extended oral broadcast: (more than 60 seconds but less than 10 minutes).

Extended Oral Broadcast Demo

Versus 5: Education

When digital humans enter the classroom, a virtual teacher can automatically align gestures, expressions, and tone with the lesson material.

For example, it slows down during key concepts and emphasizes eye contact and pointing cues to help make abstract ideas clearer.

It will make education more lively, foster stronger interactions, and increase student engagement.

Virtual Instructor

WaveSpeedAI Virtual Instructor

Kling AI Avatar Virtual Instructor

OmniHuman Virtual Instructor

In posture and facial performance, WaveSpeedAI’s InfiniteTalk appears noticeably more natural with a richer set of motions. Beyond raise-and-retract hand gestures, it includes nods, head tilts, pointing, and subtle shoulder–neck movements, with smooth transitions and more accurate emotional expression.

OmniHuman’s gestures often overreach or distort, and Kling relies on a single raised-hand movement that quickly becomes repetitive.

In the lip-sync field, OmniHuman leads, with InfiniteTalk close behind, experiencing minor slips on liaison and plosives. Kling is in the middle of the pack.

Additionally, regarding image quality, OmniHuman still shows compression artifacts and fine-detail loss. Kling’s detail accuracy is average. Meanwhile, InfiniteTalk remains clearer and more stable over long periods, providing an overall look closer to camera-ready realism.

Conclusion

InfiniteTalk: The marathon runner. Best for longer-form content (up to 10 minutes) and specialized scenarios like musical performances or two-person dialogues. Additionally, the digital humans created by WaveSpeedAI exhibit more natural movements than others.

Kling: The high-quality sprinter. Perfect for top-tier visual quality, but limited to short bursts of content (60-second audio input).

Omnihuman: The ultra-short sprinter. A backup option for high-quality output when the content is very brief (30-second audio input).

Final Thoughts

As we see here during this Battle for the crown, InfiniteTalk is the most versatile — designed for long-form and complex (including dual-speaker) interactions — making it perfect for online courses, entire podcast segments (single or multi-person), live-commerce demos, digital-singer performances, and dialogue-driven acting.

Certainly, Kling and OmniHuman excel in short, high-quality clips and quick customer-service responses. For a brief, high-impact monologue where image quality is most important, Kling is the better choice.

Links

🔗 InfiniteTalk
🔗 Kling AI Avatar
🔗 OmniHuman