video model · by Lightricks
LTX-2.3 AI Video Generator
Generate cinematic videos up to 4K with synchronized native audio using LTX-2.3 - Lightricks' latest DiT-based audio-video foundation model. Sharper motion, tighter dialogue lip-sync, and production-ready output, all inside Fliki.
Generated with LTX-2.3
A handful of LTX-2.3 clips generated inside Fliki. No edits, no post.
Prompt
Prompt
Prompt
Prompt
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Why LTX-2.3 is the latest generation
Latest LTX-2 generation
LTX-2.3 is Lightricks' newest release on the LTX-2 line - sharper detail, more stable motion, and better dialogue lip-sync than earlier versions.
Synchronized native audio
LTX-2.3 generates audio and video in a unified pass - ambient sound, effects, and dialogue arrive locked to on-screen action with natural lip-sync.
4K cinematic output
LTX-2.3 delivers up to 2160p (4K) resolution with quality suitable for final publishing, paid social, and brand campaigns - no upscaling or heavy post work needed.
Tighter motion control
Motion handling in LTX-2.3 is more stable and predictable than earlier LTX-2 builds, with fewer artifacts in high-motion scenes and cleaner subject consistency across the clip.
Open-source core, production polish
LTX-2.3 is built on Lightricks' open-source LTX-2 foundation. You get the transparency of an open model and the polish of a production-grade release.
Multi-modal inputs
LTX-2.3 supports text, image, and audio inputs for flexible creative direction. Image-to-video preserves reference quality with less drift, and audio inputs drive synchronized lip-sync.
Longer high-quality durations
LTX-2.3 handles 6, 8, and 10-second clips with consistent quality, making it suitable for narrative beats and longer branded segments.
Built for hero & campaign work
Use LTX-2.3 when the shot has to carry the campaign - paid social hero clips, product reveals, and signature brand moments. For high-volume iteration, switch to LTX-2 Fast.
How it works
How to generate a video with LTX-2.3
LTX-2.3 runs inside Fliki's standard generator. Here's the six-step flow.

Write your prompt
LTX-2.3 rewards descriptive, directorial prompts. Mention lens feel, lighting, camera movement, subject behavior, and any dialogue you want spoken on screen.

Select LTX-2.3 as your model
Pick LTX-2.3 from Fliki's model selector. Your prompt is routed to Lightricks' newest audio-video model.

Pick your aspect ratio
16:9 for landscape and cinematic web, 9:16 for vertical social. Each is composed natively in LTX-2.3.

Set the duration
LTX-2.3 supports 6, 8, or 10-second clips. Use the longer durations for full narrative beats, hero brand moments, and extended product reveals.

Add a reference image (optional)
Upload a high-quality photo to guide subject, style, or composition. LTX-2.3's improved fidelity preserves reference inputs with less drift.

Select resolution and generate
Choose 1080p, 1440p or 2160p (4K) for final delivery and hit Generate. Output is ready in Fliki with audio synced and color graded-feel baked in.
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LTX-2.3 FAQ
Frequently asked questions
Everything you need to know about generating with LTX-2.3 inside Fliki.
What is LTX-2.3?
LTX-2.3 is Lightricks' latest LTX-2 audio-video foundation model. It produces cinematic videos up to 4K with synchronized native audio, sharper motion, and improved dialogue lip-sync over earlier LTX-2 versions.
How is LTX-2.3 different from LTX-2 Fast?
LTX-2 Fast is optimized for speed and high-volume iteration; LTX-2.3 is the latest generation tuned for fidelity and final output. LTX-2.3 has sharper detail, more stable motion, and higher visual polish - use it for hero shots and campaign work.
Is LTX-2.3 open source?
LTX-2.3 is built on the open-source LTX-2 foundation. The base architecture is publicly available; LTX-2.3 represents Lightricks' latest tuned release.
Does LTX-2.3 generate audio?
Yes. Synchronized audio is part of LTX-2.3's core design - audio and video are generated together in a single pass, including dialogue with natural lip-sync.
What resolutions does LTX-2.3 support?
LTX-2.3 supports 1080p, 1440p (QHD), and 2160p (4K) outputs for production-grade delivery in both 16:9 landscape and 9:16 vertical orientations.
Can LTX-2.3 do image-to-video?
Yes. Text, image, and audio inputs are all supported. LTX-2.3 preserves reference quality particularly well, which makes it strong for image-driven hero shots.
Still curious?
Try Fliki free in your browser, no credit card required.
Start freeWhen should I use LTX-2.3 over LTX-2 Fast?
Use LTX-2.3 for hero content, paid social campaigns, brand moments, and final delivery. Use LTX-2 Fast for iteration, concept testing, and volume production where each individual clip doesn't need maximum polish.
Is LTX-2.3 available on Fliki?
Yes. LTX-2.3 is available in Fliki's model selector alongside LTX-2 Fast and the rest of the model catalog. Usage runs on Fliki's standard credit system.
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