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LTX 2.3 Fast vs Luma Ray 2 Flash

This page compares LTX 2.3 Fast vs Luma Ray 2 Flash on MaxVideoAI using the same prompts, side-by-side renders, key specs, and a scorecard across 11 criteria. Use it to shortlist the best fit — then open each engine profile for full specs and prompt examples.

6.7/10Score

LTX 2.3 Fast

Strengths: Motion Realism, Prompt Adherence

6.0/10Score

Luma Ray 2 Flash

Strengths: Visual Quality, Controllability

Scorecard (Side-by-Side)

Scores reflect quality and control on MaxVideoAI across 11 criteria.

LTX 2.3 FastCriteriaLuma Ray 2 Flash

7.1

Prompt Adherence

iprompt alignment / instruction following

6.4

6.9

Visual Quality

iimage quality / aesthetic quality / realism / artifacts / flicker

7.5

7.2

Motion Realism

imotion smoothness / physics plausibility

6.3

5.9

Temporal Consistency

itemporal coherence / identity consistency

5.4

7.0

Human Fidelity

ifaces / hands / body realism

7.0

6.2

Text & UI Legibility

itext rendering / readability

5.6

7.3

Audio & Lip Sync

ilip sync quality / dialogue sync

N/A

6.0

Multi-Shot Sequencing

ishot-to-shot continuity / multi-shot

5.4

7.1

Controllability

icamera control / constraint following

7.2

9.0

Speed & Stability

ilatency / success rate

8.5

9.1

Pricing

iprice per second / credits / estimated cost

9.1

Winner summary

Leads on scorecard

LTX 2.3 Fast leads on 6/10 (best: Motion Realism, Prompt Adherence).

Video-to-Video

Video-to-Video: Luma Ray 2 Flash (Not supported vs Supported (modify / reframe workflows)).

Generate with

LTX 2.3 Fast

Full engine profile

Generate with

Luma Ray 2 Flash

Full engine profile

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 specLuma Ray 2 Flash

1080p: $0.05/s

4K: $0.19/s

Pricing (MaxVideoAI)

540p: $0.05/s

1080p: $0.19/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

1080p

20s (>10s requires 1080p / 25 fps)

Max duration

9s max

16:9 / 9:16

Aspect ratios

16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 21:9 / 9:21

24 fps / 25 fps / 48 fps / 50 fps

FPS options

MP4

Output format

Data pending

Audio output

Native audio generation

Lip sync

Data pending

Prompt-based only

Camera / motion controls

No (SanShengAI)

Watermark

No (SanShengAI)

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 prompts stay in English to keep the same test across engines.

LTX 2.3 Fast

Placeholder example — prompt render coming soon

Luma Ray 2 Flash

Placeholder example — prompt render coming soon

Open generator:Generate with LTX 2.3 Fast Generate with Ray 2 FlashOpens the generator with this model.

UGC Talking Head + Lip Sync (9:16)

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

Prompt

Source prompts stay in English to keep the same test across engines.

LTX 2.3 Fast

Placeholder example — prompt render coming soon

Luma Ray 2 Flash

Placeholder example — prompt render coming soon

Open generator:Generate with LTX 2.3 Fast Generate with Ray 2 FlashOpens the generator with this model.

Hands + Product Demo + On-screen Text

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

Prompt

Source prompts stay in English to keep the same test across engines.

LTX 2.3 Fast

Placeholder example — prompt render coming soon

Luma Ray 2 Flash

Placeholder example — prompt render coming soon

Open generator:Generate with LTX 2.3 Fast Generate with Ray 2 FlashOpens the generator with this model.

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

Quick answers about LTX 2.3 Fast vs Luma Ray 2 Flash on MaxVideoAI (pricing, modes, specs, and why results differ).

What are LTX 2.3 Fast and Luma Ray 2 Flash?

LTX 2.3 Fast and Luma Ray 2 Flash are AI video generation engines available on MaxVideoAI. This page compares them side-by-side using the same prompts, key specs, and performance data shown above.

Which is better: LTX 2.3 Fast or Luma Ray 2 Flash?

It depends on your workflow. Use the scorecard and the “same prompt” showdowns to compare prompt adherence, motion realism, human fidelity, and text legibility — then open each engine profile for full details.

Which is cheaper on MaxVideoAI?

Pricing varies by engine and settings (duration, resolution, audio). Currently, LTX 2.3 Fast starts at 1080p: $0.05/s and Luma Ray 2 Flash starts at 540p: $0.05/s (see “Pricing (MaxVideoAI)” for details).

What are the biggest differences between LTX 2.3 Fast and Luma Ray 2 Flash?

Lip sync: both are still being validated.
Max resolution: LTX 2.3 Fast is 4K (6–10s); 1080p for >10s routing vs Luma Ray 2 Flash is 1080p.

Do they support Text-to-Video / Image-to-Video / Video-to-Video?

On MaxVideoAI: Text-to-Video is Supported vs Supported; Image-to-Video is Supported vs Supported; Video-to-Video is Not supported vs Supported (modify / reframe workflows). Some fields may still be under validation.

Do they support First/Last frame or references?

First/Last frame is Supported (start + end image in I2V) vs Not supported. Reference image/style is Supported (single start image; no separate style-reference stack) vs Supported (single start image); Reference video is Not supported vs Supported (source clip for modify / reframe).

What are the max resolution, duration, and aspect ratios?

Max output is 4K (6–10s); 1080p for >10s routing / 20s (>10s requires 1080p / 25 fps) for LTX 2.3 Fast and 1080p / 9s max for Luma Ray 2 Flash. Supported aspect ratios include 16:9 / 9:16 vs 16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 21:9 / 9:21 (see Key Specs for the full list).

Do they support audio generation and lip sync?

Audio output is Supported vs Not supported. Native audio generation is Supported vs Not supported, and lip sync is Supported vs still being validated (some fields may still be under validation).

Does MaxVideoAI add a watermark?

No. MaxVideoAI exports are watermark-free (“Watermark: No (MaxVideoAI)”).

Why do results look different with the same prompt?

Even with identical prompts, models interpret instructions differently and use different training data and generation strategies. That’s why the Showdown section exists: same prompt, side-by-side outputs.

Where can I find full specs, controls, and more prompt examples?

Open the full engine profiles for complete specs, controls, and more prompts: /models/ltx-2-3-fast and /models/luma-ray-2-flash. You can also browse more outputs in the engine galleries.

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