LTX 2.3 Fast AI Video Generator
Generate 1080p videos up to 20 seconds with synchronized audio, camera motion controls, and end frame interpolation — starting from just 100 credits on NeonLights AI.
LTX 2.3 Fast is the speed‑optimized variant of Lightricks' LTX‑2.3 video generation model. It generates videos with synchronized audio faster than real‑time — ideal for rapid prototyping, mobile workflows, and high‑volume production.
What makes it stand out is the combination of camera motion controls, start and end frame interpolation, and automatic audio generation — all in a fast, affordable package. Whether you're creating social media content, product demos, or cinematic clips, LTX 2.3 Fast delivers polished results with minimal effort.
Key Features
Synchronized Audio
Automatically generates audio that matches the visual content — no separate audio editing required.
9 Camera Motion Controls
Choose from dolly in/out/left/right, jib up/down, static, focus shift, or let the prompt drive the camera.
End Frame Interpolation
Provide both a start and end frame image — the model generates a video that transitions smoothly between them.
Portrait & Landscape
Native 9:16 portrait and 16:9 landscape support — perfect for TikTok, Reels, YouTube, and more.
Up to 20 Seconds
Generate videos from 6 to 20 seconds at 1080p resolution with 24 FPS — long enough for complete scenes.
Faster Than Real‑Time
Speed‑optimized inference generates video faster than its actual duration — ideal for rapid iteration.
What Is LTX 2.3 Fast?
LTX 2.3 Fast is Lightricks' speed‑optimized AI video generation model. It creates 1080p videos with synchronized audio from text prompts, optional start frame images, and optional end frame images for interpolation.
Version 2.3 introduces portrait video (9:16), longer durations up to 20 seconds, end frame interpolation, camera motion controls, and improved quality with a better VAE and larger text connector for improved prompt adherence.
How to Use LTX 2.3 Fast on NeonLights AI
1. Sign in to your NeonLights AI account.
2. Go to the Video Generator page.
3. Select LTX 2.3 Fast from the model dropdown.
4. Write your prompt — describe the scene, action, lighting, and camera movement in one continuous paragraph.
5. Optionally upload a start frame image to guide the first frame.
6. Optionally upload an end frame image for interpolation between start and end.
7. Choose your aspect ratio (9:16 portrait or 16:9 landscape).
8. Select a camera motion if desired (dolly, jib, static, focus shift, or none).
9. Pick your duration (6s, 12s, or 20s) and click Generate.
Camera Motion Controls
LTX 2.3 Fast gives you precise control over camera movement:
- Dolly In: Camera moves forward toward the subject — great for dramatic reveals.
- Dolly Out: Camera pulls back from the subject — ideal for establishing shots.
- Dolly Left / Right: Horizontal camera tracking — perfect for panning across scenes.
- Jib Up: Camera lifts upward — creates a sweeping, cinematic feel.
- Jib Down: Camera lowers — good for top‑down reveals.
- Static: Camera stays fixed — lets the action speak for itself.
- Focus Shift: Shifts the focal point — creates a rack focus effect.
- None (Default): The model interprets camera movement from your prompt.
You can also combine camera motion keywords in your text prompt for additional control.
End Frame Interpolation
One of the most powerful features of LTX 2.3 Fast is end frame interpolation. Upload both a start frame and an end frame image, and the model generates a video that smoothly transitions between them.
This is incredibly useful for:
- Before/after reveals: Show a transformation over time.
- Scene transitions: Create smooth visual bridges between two shots.
- Morphing effects: Transition between two different subjects or styles.
- Product showcases: Animate from one angle to another.
The model handles all the in‑between frames automatically, producing natural motion and timing.
LTX 2.3 Fast vs Other Video Models
How does LTX 2.3 Fast compare to other video models on NeonLights AI?
- vs Kling V3 Omni (300–900 credits): Kling offers higher resolution and longer durations but at 3–9× the cost. LTX 2.3 Fast starts at just 100 credits.
- vs Pixverse V5.6 (120–320 credits): Similar price range, but LTX uniquely offers end frame interpolation and camera motion controls.
- vs Seedance 1.5 Pro (60–420 credits): Seedance has more aspect ratios but lacks end frame interpolation and built‑in audio.
- vs Veo 3.1 (450–900 credits): Veo 3.1 is a premium model with higher resolution. LTX 2.3 Fast is ideal when speed and cost matter more.
LTX 2.3 Fast is the best choice when you need audio, camera controls, and end frame interpolation at an affordable price.
Prompting Tips for LTX 2.3 Fast
- Write in present tense: "A woman walks through a forest" works better than "A woman walking through a forest."
- One continuous paragraph: Avoid bullet points or numbered lists in your prompt.
- Be specific about camera angles: "low‑angle shot", "bird's eye view", "close‑up" help the model frame the scene.
- Include atmospheric details: Lighting quality, weather, textures, and time of day add realism.
- Use active verbs: "pans slowly", "zooms in", "reveals" describe motion effectively.
- Longer prompts produce better results: Don't be afraid to write 2–3 sentences of rich description.
Use Cases for LTX 2.3 Fast
- Social Media Content: Create TikToks, Reels, and YouTube Shorts in native 9:16 portrait with audio.
- Product Demos: Showcase products with smooth camera movements and professional transitions.
- Music Visualizers: Generate visual content with synchronized audio for music projects.
- Rapid Prototyping: Test video concepts quickly before committing to expensive production.
- Scene Transitions: Use end frame interpolation to create smooth bridges between shots.
- Cinematic Shorts: Combine camera motion controls with detailed prompts for film‑like clips.
Technical Specifications
Example Prompts
Cinematic forest scene with dolly movement
A cinematic slow dolly shot through a misty enchanted forest at dawn. Golden sunlight filters through ancient oak trees, casting long shadows on a moss‑covered path. Fireflies drift lazily through the air as a gentle breeze rustles the leaves. The camera moves forward steadily, revealing a hidden stone archway covered in ivy.
Product/lifestyle close‑up with audio
A barista pours steaming latte art in a cozy café. Warm ambient lighting illuminates the wooden counter. The camera holds steady as milk swirls into an intricate rosetta pattern. Soft jazz music fills the space. Close‑up shot with shallow depth of field, the background gently blurred.
Aerial landscape with jib camera motion
Aerial view of turquoise ocean waves crashing against volcanic black sand beach at sunset. The camera jibs upward revealing the coastline stretching into the distance. Warm golden light reflects off the water surface. Seagulls glide through the frame. The sound of waves and wind fills the air.
Sci‑fi cityscape with dolly and audio
A futuristic city at night seen from street level. Neon signs reflect off rain‑slicked pavement. Flying vehicles streak across the sky leaving light trails. Pedestrians with holographic umbrellas walk past. The camera slowly dollies right through the bustling scene. Ambient electronic hum and distant traffic sounds.
Pricing
100 Credits
LTX 2.3 Fast costs 100 credits for 6 seconds, 200 credits for 12 seconds, and 360 credits for 20 seconds. All durations include synchronized audio.
Frequently Asked Questions
What is LTX 2.3 Fast?
LTX 2.3 Fast is Lightricks' speed‑optimized AI video generation model. It creates 1080p videos up to 20 seconds with synchronized audio, camera motion controls, and end frame interpolation.
How much does LTX 2.3 Fast cost on NeonLights AI?
6 seconds costs 100 credits, 12 seconds costs 200 credits, and 20 seconds costs 360 credits. All include synchronized audio.
Does LTX 2.3 Fast generate audio?
Yes — LTX 2.3 Fast automatically generates synchronized audio that matches the visual content of the video.
What camera motions are available?
You can choose from dolly in, dolly out, dolly left, dolly right, jib up, jib down, static, focus shift, or none (prompt‑driven).
Can I use start and end frame images?
Yes. Upload a start frame for image‑to‑video generation. Add an end frame to create interpolation — the model generates a smooth transition between both images.
What aspect ratios does LTX 2.3 Fast support?
It supports 9:16 (portrait) and 16:9 (landscape) — ideal for both social media and widescreen content.
What resolution and frame rate does it use?
All videos are generated at 1080p resolution and 24 FPS for a cinematic look.
Is LTX 2.3 Fast good for social media?
Yes — it supports native 9:16 portrait for TikTok and Reels, generates audio automatically, and starts at just 100 credits for 6 seconds.
Try LTX 2.3 Fast Now
Create AI videos with audio, camera controls, and end frame interpolation — starting from just 100 credits.
Generate Videos with LTX 2.3 Fast