LTX 2.3 is now available in RunDiffusion, giving creators a more flexible way to generate high-fidelity video with synchronized audio and more precise motion control. For users building cinematic clips, social-ready vertical videos, or polished preview renders, this release adds more control over framing, timing, and playback behavior without complicating the workflow.
Changelog Overview
This release brings LTX 2.3 to RunDiffusion with two model variants designed for different production needs. Users can choose Pro for the full feature set, including audio, interpolation, and retakes, or Fast for speed-optimized previews and quicker iteration.
The model is built for creators who want stronger control over how motion, duration, and final framing behave in finished outputs. It also supports both portrait and landscape generation, making it easier to move between short-form social content and more traditional widescreen formats inside the same workflow.
New Model: LTX 2.3
LTX 2.3 expands what users can do with AI video generation by combining synchronized audio support, precise motion settings, and flexible framing options in a single release. It is designed for creators who need more than a one-size-fits-all render path and want the ability to tailor output settings to the needs of the project.
Key improvements:
- High-fidelity video generation with synchronized audio support
- Two model variants for different workflows:
- Pro for the full feature suite, including audio, interpolation, and retakes
- Fast for speed-optimized previews and faster iteration
- Native 9:16 portrait and landscape orientation support
- Resolution options in 1080p, 1440p, and 4K
- Motion control with selectable frame rates at 24, 25, 48, or 50 FPS
- Flexible clip duration options at 6, 8, 10, 12, 14, 16, 18, or 20 seconds
- Automatic fallback behavior for longer clips: outputs at 12 seconds or more default to 1080p, LTX 2.3 Fast, and 24 FPS
Best suited for: creators who want more direct control over video pacing, framing, and output format for cinematic work, social content, and polished concept clips.
Architecture Example
Contemporary luxury architecture concept with subtle cinematic camera movement and reflective material motion.
Architecture video created with LTX 2.3
Interior Design Example
High-end interior design concept with soft light movement, gentle material motion, and editorial-style framing.
Interior Design video created with LTX 2.3
Why LTX 2.3 Matters for Workflows
LTX 2.3 is especially useful for teams and creators who need to balance quality and speed depending on the stage of the project. Fast makes it easier to test ideas, preview timing, and iterate quickly. Pro is the better fit when you need the full set of capabilities for more polished final outputs.
The added control over orientation, frame rate, and duration also makes this release more practical for real production use. Portrait output supports vertical-first content workflows, while landscape output remains a strong fit for broader video storytelling, demos, and promotional assets.
For users working with longer clips, the automatic defaults on 12-second and longer generations help keep outputs predictable. That makes it easier to understand how the system will behave as clip length increases, especially during fast iteration cycles.
Availability
LTX 2.3 is now available in RunDiffusion.
