Compare engines

LTX 2.3 Pro vs LTX Video 2.0 Fast

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.

7.1/10Score

LTX 2.3 Pro

Strengths: Controllability, Visual Quality

5.6/10Score

LTX Video 2.0 Fast

Strengths: Rapid social clips

Pricing snapshot

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

LTX 2.3 Pro

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

LTX Video 2.0 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
7.6

Prompt Adherence

iprompt alignment / instruction following
6.2
7.4

Visual Quality

iimage quality / aesthetic quality / realism / artifacts / flicker
5.7
7.5

Motion Realism

imotion smoothness / physics plausibility
6.2
6.2

Temporal Consistency

itemporal coherence / identity consistency
4.5
7.3

Human Fidelity

ifaces / hands / body realism
6.3
6.5

Text & UI Legibility

itext rendering / readability
5.5
7.8

Audio & Lip Sync

ilip sync quality / dialogue sync
7.0
6.5

Multi-Shot Sequencing

ishot-to-shot continuity / multi-shot
5.0
7.9

Controllability

icamera control / constraint following
5.7
7.8

Speed & Stability

ilatency / success rate
9.2
9.5

Pricing

iprice per second / credits / estimated cost
9.8

Winner summary

Leads on scorecard

LTX 2.3 Pro leads on 9/11 (best: Controllability, Visual Quality).

Cheaper on MarkDream

Cheaper: LTX Video 2.0 Fast (1080p: $0.08/s vs 1080p: $0.05/s).

Video-to-Video

Video-to-Video: LTX 2.3 Pro (Supported (extend / retake workflows) vs Not supported).

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 2.3 ProKey specLTX Video 2.0 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 on T2V/I2V generate; workflow-specific limits for Audio/Extend/Retake
Max resolution
4K on 6-10s generate modes; workflow-specific limits for Audio/Extend/Retake
Generate 6–10s; Audio/Extend/Retake up to 20s
Max duration
20s route; standard generate presets are 6-10s
16:9 generate / 9:16 generate
Aspect ratios
16:9
24 fps generate / 25 fps generate / 48 fps generate / 50 fps generate
FPS options
25 fps / 50 fps
MP4
Output format
MP4
Audio output
Native audio generation
Lip sync
Prompt-based only
Camera / motion controls
Basic
No (MarkDream)
Watermark
No (MarkDream)

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.

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 2.3 Pro

Placeholder example — prompt render coming soon

LTX Video 2.0 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX 2.3 ProGenerate with LTX Video 2.0 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 2.3 Pro

Placeholder example — prompt render coming soon

LTX Video 2.0 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX 2.3 ProGenerate with LTX Video 2.0 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 2.3 Pro

Placeholder example — prompt render coming soon

LTX Video 2.0 Fast

Placeholder example — prompt render coming soon
Try this prompt:Generate with LTX 2.3 ProGenerate with LTX Video 2.0 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 for economical LTX Fast generation and advanced LTX 2.3 Pro control.

Can I keep using LTX Video 2.0 Fast on MarkDream?

Yes. It remains available for lower-cost 16:9 text/image generation with audio and output at 1080p, 1440p, or 4K.

When should I migrate to LTX 2.3 Pro?

Move from LTX Video 2.0 Fast when you need 9:16 delivery, audio-driven generation, extension, retake, or start/end-frame control.

Does LTX 2.3 Pro replace the simple Fast workflow?

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.