Speed testsDetails
Designed for rapid iteration and volume. Use it to discover hooks and pacing before polishing.
- Generate many variants quickly.
- Keep prompts short and direct.
- Test different openings back-to-back.
- Promote winners to Pro.
Lightricks model
LTX-2 Fast
Fast 6–20s clips with synced audio — up to 4K and 25–50 fps for rapid iteration.
Use it for hooks, pacing, and mood exploration, then regenerate winners in the premium tier.
Text→VideoImage→Video4K20s16:9Audio
Pay-as-you-go · Price shown before you generate
- Price$0.05/s
- Duration8s
- Format16:9
Best use cases
Rapid concept testingAd drafts & variant testingSocial clips & quick iterationsPre-viz & story beatsMood pieces & cinematic B-rollRough-cut sequences & loops
Why LTX-2 Fast inside MaxVideoAI
- Built for iteration speed (Make lots of variations fast without overthinking the first pass.)
- More room per clip (Better for pacing, build-up, and “mini-scene” beats than ultra-short engines.)
- Sound-ready drafts (Great for temp dialogue/ambience/SFX timing (or mute and finish audio in post).)
- Easy upgrade path (Keep the same prompt structure and rerun the keepers in LTX-2 Pro for polish.)
Real Specs – LTX-2 Fast in MaxVideoAI
The limits that shape your renders.
Price / second1080p $0.05/s1440p $0.10/s4k $0.21/s
Text-to-VideoSupported
Image-to-VideoSupported
Reference image / style referenceSupported
Max resolution4K
Max duration20s
Aspect ratios16:9
FPS options25 fps / 50 fps
Output formatMP4
Audio outputSupported
Native audio generationSupported
Lip syncSupported
Camera / motion controlsBasic
WatermarkNo (MaxVideoAI)
Release dateOct 2025
Draft workflowDetails
The prompt format carries over to LTX-2 Pro, so upgrades are simple. Treat Fast as your draft layer.
- Reuse shot language for finals.
- Swap in stronger references later.
- Great for social drafts and loops.
- Save prompt templates.
LTX-2 Fast examples
Recent LTX-2 Fast renders with audio on/off for social clips and quick iterations.
LTX Video 2.0 Fast · 8s
Recreate this shot →
LTX Video 2.0 Fast · 8s
Recreate this shot →
LTX Video 2.0 Fast · 10s
Recreate this shot →
LTX Video 2.0 Fast · 8s
Recreate this shot →
LTX Video 2.0 Fast · 10s
Recreate this shot →
LTX Video 2.0 Fast · 8s
Recreate this shot →How to Write a Great LTX 2 Fast Prompt
LTXLTX-2 Fast prefers short prompts with one clear action and a single camera move.
Tip: duration + fps are set in the UI - your prompt controls subject, action, camera, lighting, style, and optional sound cues.
Quick prompt (fast iteration)
Use 1–2 sentences when you want variations.
Quick = variations. Use for fast iteration.
Template (copy/paste)
[Subject + action] in [setting], [camera move], [lighting/style], [optional sound cue]. Negative: [text, logos, extra people, blur]
Example
Handheld smartphone UGC clip of a woman unboxing a new skincare bottle at a kitchen table. She peels the seal, smiles, and turns the bottle toward camera. Soft window daylight, natural colors, subtle room tone + packaging crinkle.
Demo prompt – fast social clip
8 second 16:9 cinematic shot at a busy city crosswalk at golden hour. The camera starts behind a young woman with a backpack as she waits at the curb, then moves into a smooth handheld tracking shot as she steps onto the crosswalk and walks toward the opposite…
View render →Tips & limitations
LTX-2 Fast is most reliable when you treat it like a draft pass: simple shots, quick variations, then polish the winner.
What works best
- Draft-first workflow: generate a few variants, pick a winner, then rerun in Pro for polish.
- One clear action + one camera move beats long “wish-list” prompts.
- Audio works best with 1–2 clear cues (ambience + one key sound). Keep dialogue short.
Common problems → fast fixes
- Feels random / inconsistent → remove extra beats; rerun 2–3 tight variations.
- Motion looks weird → slow the action and keep the camera move simple; reduce background clutter.
- Subject drifts off-brand → start from a reference image; keep wardrobe, lighting, and palette consistent.
- Text looks wrong → avoid readable signage, tiny UI, labels, and on-screen text.
- Dialogue drifts → keep lines short; avoid long monologues.
Hard limits to keep in mind
- 12–20s runs are locked to 1080p / 25 fps in this routing.
- 16:9 only.
- Image→Video uses one reference image (no multi-image control).
LTX-2 Fast vs LTX-2 Pro
View LTX-2 Pro details →Use LTX-2 Fast when you want:
- High-volume drafts and iteration speed
- Quick concept testing and pacing checks
- Rough cuts before finals
Use LTX-2 Pro when you need:
- Polished client-ready deliverables
- Higher resolution and smoother motion
- Audio-visual sync for finals
Compare LTX-2 Fast vs other AI video models
Not sure if LTX-2 Fast is the best fit for your shot? These side-by-side comparisons break down the tradeoffs — price per second, resolution, audio, speed, and motion style — so you can pick the right engine fast.
Each page includes real outputs and practical best-use cases.
LTX-2 Fast vs LTX 2.3 Fast
Stay in a fast workflow but switch to the current LTX 2.3 Fast routing for newer text-to-video and image-to-video generation.
Compare LTX-2 Fast vs LTX 2.3 Fast →LTX-2 Fast vs LTX 2.3 Pro
Step up to LTX 2.3 Pro when you need audio-to-video, extend, retake, and the broader current-generation LTX workflow set.
Compare LTX-2 Fast vs LTX 2.3 Pro →Safety & people / likeness
- No sexual content, and absolutely nothing involving minors.
- No hateful, harassing, or violent/graphic content.
- Don’t impersonate real people or public figures; use consent for any likeness/voice.
- Don’t include private personal data (faces of non-consenting people, addresses, phone numbers, documents).
- Keep outputs brand-safe; if you use dialogue, keep it clean and short.
FAQ
How long can LTX-2 Fast run?
6–20 seconds. Durations above 10 seconds must run at 1080p and 25 fps per Fal constraints.
Does LTX-2 Fast include audio?
Yes, native audio is on by default. You can toggle it off for silent exports.
Which aspect ratios are supported?
16:9 only in the current Fast routing. Use Wan or Pika for flexible ratios.