Compare engines

LTX Video 2.0 Pro vs LTX 2.3 Fast

Compare the available LTX Video 2.0 Pro workflow with current LTX 2.3 Fast. Both cover audio and high-resolution landscape generation, but 2.3 Fast adds 9:16, more frame-rate choices, lower listed shared-resolution pricing, and constrained longer clips.

Quick verdict

Stay on available LTX Video 2.0 Pro for a familiar ten-second 16:9 route; upgrade to current LTX 2.3 Fast for lower listed shared-resolution pricing, vertical delivery, and longer clips. Durations above 10 seconds require 1080p at 25 fps.

6.0/10Score

LTX Video 2.0 Pro

Strengths: Premium product stories

6.7/10Score

LTX 2.3 Fast

Strengths: Speed & Stability, Temporal Consistency

Pricing snapshot

MarkDream price per second by resolution; the pricing score compares the same tier when possible.

LTX Video 2.0 Pro

1080p: $0.08/s1440p: $0.16/s4K: $0.31/s

LTX 2.3 Fast

1080p: $0.05/s1440p: $0.11/s4K: $0.21/s

Comparable score tier: 1080p: $0.08/s vs 1080p: $0.05/s

Scorecard (Side-by-Side)

Scores reflect quality and control on MarkDream across 11 criteria.

How we benchmark
6.7

Prompt Adherence

iprompt alignment / instruction following
7.1
6.0

Visual Quality

iimage quality / aesthetic quality / realism / artifacts / flicker
6.9
6.6

Motion Realism

imotion smoothness / physics plausibility
7.2
4.8

Temporal Consistency

itemporal coherence / identity consistency
5.9
6.8

Human Fidelity

ifaces / hands / body realism
7.0
5.8

Text & UI Legibility

itext rendering / readability
6.2
7.5

Audio & Lip Sync

ilip sync quality / dialogue sync
7.3
5.5

Multi-Shot Sequencing

ishot-to-shot continuity / multi-shot
6.0
6.0

Controllability

icamera control / constraint following
7.1
7.5

Speed & Stability

ilatency / success rate
9.0
9.5

Pricing

iprice per second / credits / estimated cost
9.8

Winner summary

Leads on scorecard

LTX 2.3 Fast leads on 10/11 (best: Speed & Stability, Temporal Consistency).

Cheaper on MarkDream

Cheaper: LTX 2.3 Fast (1080p: $0.08/s vs 1080p: $0.05/s).

First/Last frame

First/Last frame: LTX 2.3 Fast (Not supported vs Supported (start + end image in I2V)).

Key Specs (Side-by-Side)

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.

LTX Video 2.0 ProKey specLTX 2.3 Fast
1080p: $0.08/s
1440p: $0.16/s
4K: $0.31/s
Pricing (MarkDream)
1080p: $0.05/s
1440p: $0.11/s
4K: $0.21/s
Text-to-Video
Image-to-Video
Video-to-Video
First/Last frame
Reference image / style reference
Reference video
4K
Max resolution
4K (6–10s); 1080p for >10s routing
10s
Max duration
20s (>10s requires 1080p / 25 fps)
16:9
Aspect ratios
16:9 / 9:16
25 fps / 50 fps
FPS options
24 fps / 25 fps / 48 fps / 50 fps
MP4
Output format
MP4
Audio output
Native audio generation
Lip sync
Basic
Camera / motion controls
Prompt-based only
No (MarkDream)
Watermark
No (MarkDream)

Keep the familiar Pro workflow

Stay with LTX Video 2.0 Pro when its established 16:9 text/image route, ten-second ceiling, audio, and 25/50 fps options fit production.

Choose Fast for vertical delivery

LTX 2.3 Fast adds 9:16, 24/48 fps choices, and lower listed per-second tiers at 1080p, 1440p, and 4K.

Plan longer Fast clips carefully

Fast can reach 20 seconds, but clips above ten seconds are restricted to the 1080p and 25 fps combination.

Best route for each production

Keep 2.0 Pro for familiar landscape sequences; use 2.3 Fast for cost-sensitive vertical work or longer shots that fit its duration rule.

Recommended next steps

Showdown (same prompt)

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.

Fast Motion + Physics (16:9)

What it tests: Motion Realism + Temporal Consistency + Visual Quality

Prompt
Source prompt

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 Video 2.0 Pro

Placeholder example — prompt render coming soon

LTX 2.3 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX Video 2.0 ProGenerate with LTX 2.3 FastOpens the generator pre-filled.

UGC Talking Head + Lip Sync (9:16)

What it tests: Human Fidelity + Audio/Lip Sync + Prompt Adherence

Prompt
Source prompt

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 Video 2.0 Pro

Placeholder example — prompt render coming soon

LTX 2.3 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX Video 2.0 ProGenerate with LTX 2.3 FastOpens the generator pre-filled.

Hands + Product Demo + On-screen Text

What it tests: Hands/Fingers + Text & UI Legibility + Prompt Adherence

Prompt
Source prompt

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 Video 2.0 Pro

Placeholder example — prompt render coming soon

LTX 2.3 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX Video 2.0 ProGenerate with LTX 2.3 FastOpens the generator pre-filled.

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.

FAQ

Answers about cost, orientation, and migration from LTX 2.0 Pro to 2.3 Fast.

Who should stay on LTX Video 2.0 Pro?

Teams with a validated ten-second 16:9 text/image workflow can keep using the available model, especially when current prompts and delivery settings already work.

Why move from LTX 2.0 Pro to LTX 2.3 Fast?

Migrate when you need 9:16, 24/48 fps, lower listed pricing at shared resolutions, or a clip longer than ten seconds under the 1080p/25 fps rule.

Does LTX 2.3 Fast support 20-second 4K clips?

No. Although its maximum is 20 seconds, anything above 10 seconds must use 1080p at 25 fps; keep 4K generations to ten seconds or less.