LTX-2.3 vs CogVideoX

LTX is the open-weights enterprise model for 2026: 22B parameters, native 4K, audio-to-video, and LoRA fine-tuning at $0.04/sec. CogVideoX 1.5 is a 5B research model capped at 768p, a starting point and not a production foundation.

CogVideoX 1.5

Developer

Lightricks

Zhipu AI (ZAI)

Parameters

22B

Open Source

Yes

On-Prem

Yes (self-host)

OUTPUT QUALITY

Native 4K Rendering

Yes (3840×2160)

No (768p / 1360×768)

Max Video Length

20 sec (Fast) / 10 sec (Pro)

~10 sec (161 frames @ 16fps)

Frame Rate (fps)

Up to 50 fps

16 fps

SPEED & COST

8 sec FHD Generation Time

~15 sec (H100 cloud)

~1 min (H100)

API Pricing
(per second of video)

$0.04/sec (Fast 1080p) $0.06/sec (Pro 1080p) $0.16/sec (Fast 4K) $0.24/sec (Pro 4K)

~$0.02/sec ($0.20/10-sec via fal.ai)

Free Access

Yes – open-source + free Desktop app

Yes – self-host open weights

Subscription Plans
(non-API access)

Free (self-host & Desktop)

Free (self-host)

CAPABILITIES

Text-to-Video

Yes

Image-to-Video

Yes

Retake

Yes (LTX Retake)

HDR Output

Yes

Extend

Yes

LipDub

Yes

Audio-to-Video

Yes – native multimodal

Multi-modal Inputs
(text + image + audio + video)

All four

Text + Image

Motion Control

Yes – full control

Limited

Character Consistency

Yes – via LoRA fine-tuning

Limited

Content Moderation / Limits

No limits (open source)

DEVELOPER & ENTERPRISE

LoRA / Fine-tuning

Yes – LoRA + IC-LoRA

Yes – CogKit

Fully Customizable

Yes

Runs on Consumer-Grade GPUs

Yes

ComfyUI / Diffusers Support

Yes

SUMMARY

Best For

Enterprise teams needing on-prem deployment, full model customization, IP protection, and zero marginal cost at scale

Developers fine-tuning lightweight open-source models on modest hardware

Read Full Comparison

The LTX Stack

Build, Create, and Scale with LTX

Production-grade video generation models designed to hold up under real workloads. Built for long sequences, precise motion, and high-fidelity output from fast iteration to final-quality renders. Learn More →

HDR Output

Delivered as an IC-LoRA on LTX-2.3. Generate directly in HDR or convert existing SDR footage to EXR. More grading latitude, more range, ready for real finishing pipelines.

Try LTX-2.3 Now

Native Portrait

Generate vertical video up to 1080×1920 — trained on portrait-orientation data, not cropped from landscape.

Try LTX-2 Now

Audio to Video

Generate video where voice, music, and sound effects define structure, pacing, and motion.Built for production-grade workflows that require precise, harmonious control over audio-led scenes - from podcasts and avatars to voice-driven clips -not one-off demos or talking heads.

Try LTX-2 Now

20 sec Clip

Extend creative range with long-form generation. Produce up to 20 seconds of high-fidelity video with complete control and consistent style.

Try LTX-2 Now

LTX Models (LTX-2, LTX-2.3) vs CogVideoX 1.5

LTX-2.3 vs CogVideoX

Success, Engineered Together

Build, Create, and Scale with LTX

HDR Output

Native Portrait

Audio to Video

20 sec Clip

Which model is best for my business?

LTX is best for:

CogVideoX 1.5 is best for:

FAQs

What is the main difference between LTX and CogVideoX 1.5?

Does LTX offer features that CogVideoX 1.5 doesn’t?

What types of content can I generate with LTX vs. CogVideoX 1.5?

Why type of person should use LTX?

Does LTX offer an API or Licensing agreement?

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