LTX-2.3 vs Runway

LTX delivers native 4K, on-prem deployment, and LoRA fine-tuning at $0.04/sec with no subscription lock-in. Runway is a creative app at $0.25/sec, not enterprise infrastructure.

Runway

Developer

Lightricks

Runway

Parameters

22B

Undisclosed

Open Source

Yes

On-Prem

Yes (self-host)

OUTPUT QUALITY

Native 4K Rendering

Yes (3840×2160)

No (720p native; 4K upscale +$0.02/sec)

Max Video Length

20 sec (Fast) / 10 sec (Pro)

5–10 sec

Frame Rate (fps)

Up to 50 fps

24 fps

SPEED & COST

8 sec FHD Generation Time

~15 sec (H100 cloud)

~30 sec (Gen-4 Turbo, i2v only); ~2–4 min (Gen-4 Std); ~2 min (Gen-4.5)

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)

$0.05/sec (Gen-4 Turbo) $0.12/sec (Gen-4) $0.25/sec (Gen-4.5)

Free Access

Yes – open-source + free Desktop app

Limited – Basic plan (625 cr/mo, watermarked, 720p export only)

Subscription Plans
(non-API access)

Free (self-host & Desktop)

Basic (free, 625 cr/mo); Standard $12/mo; Pro $28/mo; Unlimited $76/mo

CAPABILITIES

Text-to-Video

Yes

Limited – Gen-4 Turbo: No (image required); Gen-4.5: 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

Yes – camera controls, Act One

Character Consistency

Yes – via LoRA fine-tuning

Yes – Act One

Content Moderation / Limits

No limits (open source)

Strict (CSAM strictly blocked; NSFW blocked; impersonation blocked; humans allowed for legitimate use)

DEVELOPER & ENTERPRISE

LoRA / Fine-tuning

Yes – LoRA + IC-LoRA

Fully Customizable

Yes

Runs on Consumer-Grade GPUs

Yes

No – cloud only

ComfyUI / Diffusers Support

Yes

SUMMARY

Best For

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

Filmmakers and VFX artists using cloud-based generation tools

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