LTX 2.3 Pro
Strengths: Controllability, Visual Quality
Compare engines
Compare current LTX 2.3 Pro with the available LTX Video 2.0 Fast workflow. The older Fast route keeps lower listed tiers for straightforward 16:9 generation, while 2.3 Pro adds 9:16, audio-to-video, extension, retake, and newer start/end-frame controls.
Quick verdict
Stay on available LTX Video 2.0 Fast for economical 16:9 text/image work. Upgrade to current LTX 2.3 Pro for 9:16 and advanced source-backed modes; its standard text/image generation stops at 10 seconds.
Strengths: Controllability, Visual Quality
Strengths: Rapid social clips
MarkDream price per second by resolution; the pricing score compares the same tier when possible.
LTX 2.3 Pro
LTX Video 2.0 Fast
Comparable score tier: 1080p: $0.08/s vs 1080p: $0.05/s
Scores reflect quality and control on MarkDream 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 Pro leads on 9/11 (best: Controllability, Visual Quality).
Cheaper: LTX Video 2.0 Fast (1080p: $0.08/s vs 1080p: $0.05/s).
Video-to-Video: LTX 2.3 Pro (Supported (extend / retake workflows) 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.
Keep Fast for economical generation
Continue with LTX Video 2.0 Fast when the job is established 16:9 text/image generation with audio and lower listed 1080p, 1440p, or 4K tiers.
Separate Pro durations by mode
LTX 2.3 Pro text-to-video and image-to-video offer 6, 8, or 10 seconds. The 20-second ceiling applies only to audio-to-video, extension, or retake.
Pay for control when it matters
The current Pro route lists higher resolution tiers, so its extra modes should solve a real production requirement before migration.
Best fit for simple or advanced work
Use LTX Video 2.0 Fast for economical landscape generation; use LTX 2.3 Pro for vertical, audio-led, extension, retake, or start/end-frame production.
Side-by-side renders from the same prompt on MarkDream. 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 Pro
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 Pro
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 Pro
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.
Answers for economical LTX Fast generation and advanced LTX 2.3 Pro control.
Yes. It remains available for lower-cost 16:9 text/image generation with audio and output at 1080p, 1440p, or 4K.
Move from LTX Video 2.0 Fast when you need 9:16 delivery, audio-driven generation, extension, retake, or start/end-frame control.
Not for every job. The available 2.0 Fast route remains economical for straightforward landscape generation; 2.3 Pro earns its place through broader controls.