Compare engines

LTX 2.3 Fast vs LTX Video 2.0 Fast

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.

6.7/10Score

LTX 2.3 Fast

Strengths: Temporal Consistency, Controllability

5.6/10Score

LTX Video 2.0 Fast

Strengths: Rapid social clips

Pricing snapshot

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

LTX 2.3 Fast

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

LTX Video 2.0 Fast

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

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

Scorecard (Side-by-Side)

Scores reflect quality and control on MaxVideoAI across 11 criteria.

How we benchmark
7.1

Prompt Adherence

iprompt alignment / instruction following
6.2
6.9

Visual Quality

iimage quality / aesthetic quality / realism / artifacts / flicker
5.7
7.2

Motion Realism

imotion smoothness / physics plausibility
6.2
5.9

Temporal Consistency

itemporal coherence / identity consistency
4.5
7.0

Human Fidelity

ifaces / hands / body realism
6.3
6.2

Text & UI Legibility

itext rendering / readability
5.5
7.3

Audio & Lip Sync

ilip sync quality / dialogue sync
7.0
6.0

Multi-Shot Sequencing

ishot-to-shot continuity / multi-shot
5.0
7.1

Controllability

icamera control / constraint following
5.7
9.0

Speed & Stability

ilatency / success rate
9.2
9.8

Pricing

iprice per second / credits / estimated cost
9.8

Winner summary

Leads on scorecard

LTX 2.3 Fast leads on 9/11 (best: Temporal Consistency, Controllability).

First/Last frame

First/Last frame: LTX 2.3 Fast (Supported (start + end image in I2V) 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 FastKey specLTX Video 2.0 Fast
1080p: $0.05/s
1440p: $0.11/s
4K: $0.21/s
Pricing (MaxVideoAI)
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 (6–10s); 1080p for >10s routing
Max resolution
4K on 6-10s generate modes; workflow-specific limits for Audio/Extend/Retake
20s (>10s requires 1080p / 25 fps)
Max duration
20s route; standard generate presets are 6-10s
31s avg
Avg render time
Data pending
16:9 / 9:16
Aspect ratios
16:9
24 fps / 25 fps / 48 fps / 50 fps
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 (MaxVideoAI)
Watermark
No (MaxVideoAI)

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.

Recommended next steps

Showdown (same prompt)

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.

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 Fast

LTX Video 2.0 Fast

Try this prompt:Generate with LTX 2.3 FastGenerate 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 Fast

LTX Video 2.0 Fast

Try this prompt:Generate with LTX 2.3 FastGenerate 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 Fast

LTX Video 2.0 Fast

Try this prompt:Generate with LTX 2.3 FastGenerate 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

Specific answers for staying on LTX 2.0 Fast or moving to LTX 2.3 Fast.

Is LTX Video 2.0 Fast still available on MaxVideoAI?

Yes. It remains available for established 16:9 text and image workflows with audio, up to 20 seconds, and 1080p, 1440p, or 4K output.

What does LTX 2.3 Fast add over LTX Video 2.0 Fast?

It adds 9:16 output, start/end-frame guidance for image generation, and 24/48 fps choices alongside 25/50 fps.

Can either LTX Fast model generate more than ten seconds at 4K?

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.