LTX 2.3 Fast
Strengths: Temporal Consistency, Controllability
Compare engines
Compare LTX 2.3 Fast with the available LTX Video 2.0 Fast workflow. Both include audio, reach 4K, and use the same listed resolution tiers, while the current 2.3 Fast route adds vertical output, more FPS choices, and start/end-frame control.
Quick verdict
Both remain available at the same listed tiers. Stay on LTX Video 2.0 Fast for an established 16:9 workflow; upgrade to current LTX 2.3 Fast for 9:16, start/end-frame control, and broader FPS choices. Both models require 1080p at 25 fps above 10 seconds.
Strengths: Temporal Consistency, Controllability
Strengths: Rapid social clips
MaxVideoAI price per second by resolution; the pricing score compares the same tier when possible.
LTX 2.3 Fast
LTX Video 2.0 Fast
Comparable score tier: 1080p: $0.05/s vs 1080p: $0.05/s
Scores reflect quality and control on MaxVideoAI across 11 criteria.
How we benchmarkPrompt Adherence
iprompt alignment / instruction followingVisual Quality
iimage quality / aesthetic quality / realism / artifacts / flickerMotion Realism
imotion smoothness / physics plausibilityTemporal Consistency
itemporal coherence / identity consistencyHuman Fidelity
ifaces / hands / body realismText & UI Legibility
itext rendering / readabilityAudio & Lip Sync
ilip sync quality / dialogue syncMulti-Shot Sequencing
ishot-to-shot continuity / multi-shotControllability
icamera control / constraint followingSpeed & Stability
ilatency / success ratePricing
iprice per second / credits / estimated costLTX 2.3 Fast leads on 9/11 (best: Temporal Consistency, Controllability).
First/Last frame: LTX 2.3 Fast (Supported (start + end image in I2V) vs Not supported).
Compare key AI video model specs side-by-side (pricing, inputs, resolution, duration, aspect ratios, audio, and core controls). This is a high-level snapshot — see the full engine profile for the complete feature set and prompt examples.
Stay with the established Fast route
Keep LTX Video 2.0 Fast when a proven 16:9 text- or image-to-video workflow already covers the brief, including audio and output through 4K.
Move to the current Fast controls
Choose LTX 2.3 Fast for 9:16 delivery, optional end-frame guidance in image mode, and 24, 25, 48, or 50 fps selection.
Treat the long-duration rule as shared
Both Fast models can reach 20 seconds, and both require 1080p at 25 fps for any duration above 10 seconds.
Best Fast workflows
Use 2.0 Fast for validated landscape production; use 2.3 Fast when vertical delivery, end-frame guidance, or broader FPS choices shape the brief.
Side-by-side renders from the same prompt on MaxVideoAI. Prompts are identical; outputs may vary by model.
Showing up to 3 prompt pairs for clarity.
What it tests: Motion Realism + Temporal Consistency + Visual Quality
Wide 16:9 cinematic action shot, a runner sprints through a rainy city street at night, water splashes realistically with each step, reflections on wet asphalt, handheld tracking camera following from the side. Dynamic motion with believable inertia and physics, no rubbery limbs, no wobbling background, stable scene geometry, minimal temporal flicker, sharp details despite fast movement, realistic motion blur.
LTX 2.3 Fast
LTX Video 2.0 Fast
What it tests: Human Fidelity + Audio/Lip Sync + Prompt Adherence
Vertical 9:16 TikTok-style UGC selfie video, handheld smartphone feel, natural indoor daylight near a window. A friendly creator speaks directly to camera with natural blinking, subtle head nods, and a warm smile. Add small human imperfections: a tiny hesitation, a soft breath, a quick smile mid-sentence, and a micro-pause before the last line. Realistic skin texture, stable identity, no face warping, minimal flicker, clean audio with natural room tone. No subtitles. No on-screen text. No logos. No watermarks. The creator says (exactly, with the same pacing and hesitations): “Okay, so… um… quick thing. If you’re feeling stuck, just do the tiniest first step… like, set a two-minute timer and start. (smiles) That’s it. You’ll be surprised how fast it gets easier.”
LTX 2.3 Fast
LTX Video 2.0 Fast
What it tests: Hands/Fingers + Text & UI Legibility + Prompt Adherence
Wide 16:9 full-body unboxing video in a clean studio/kitchen setting. A person is fully visible (head-to-toe or at least head-to-knees) standing behind a minimalist tabletop. They unbox a small generic gadget from a plain matte cardboard box: peel the seal, open the lid, remove the inner tray, take out the device and accessories, and lay everything neatly on the table. The person occasionally lifts the item toward the camera for a closer look, then places it back down. Realism requirements: natural body proportions, stable identity, realistic skin and clothing fabric, no face warping, no unnatural limb bending. Hands must be highly realistic: correct finger count, natural grip, believable pressure/contact with the box and device, consistent shadows, no extra fingers, no “floating” objects. Keep object geometry stable, no wobbling background, minimal temporal flicker. Camera: single continuous shot, tripod-stable, slight cinematic push-in (very slow), eye-level or slightly above table height. Natural soft daylight, clean shadows, realistic materials and textures. No logos, no brand names, no watermarks. No subtitles. Optional on-screen title at the top (perfectly readable and stable, no jitter): "UNBOXING — FIRST LOOK"
LTX 2.3 Fast
LTX Video 2.0 Fast
This side-by-side AI video comparison uses identical prompts to highlight differences in motion, realism, human fidelity, and text legibility. For full specs, controls, and more prompt examples, open each engine profile.
Specific answers for staying on LTX 2.0 Fast or moving to LTX 2.3 Fast.
Yes. It remains available for established 16:9 text and image workflows with audio, up to 20 seconds, and 1080p, 1440p, or 4K output.
It adds 9:16 output, start/end-frame guidance for image generation, and 24/48 fps choices alongside 25/50 fps.
No. LTX 2.3 Fast and LTX Video 2.0 Fast both require 1080p at 25 fps above 10 seconds. Use 10 seconds or less for 1440p or 4K.