Choose LTX 2.3 Fast
Use LTX for fast concepts, audio-ready output, clips up to 20 seconds, and 1080p through 4K delivery.
Compare engines
LTX 2.3 Fast vs Luma Ray 2
See what each model can create. Compare quality, controls and price.
How to choose
Compare LTX 2.3 Fast with Luma Ray 2 when choosing between fast, audio-ready generation and a legacy Luma editing toolkit. LTX 2.3 Fast reaches 20 seconds with 1080p, 1440p, or 4K output, while Luma Ray 2 stays at 9 seconds but adds video-to-video and reframe workflows.
Quick verdict
Choose LTX 2.3 Fast for rapid text or image generation, native audio, longer landscape or vertical clips, and output up to 4K. Choose Luma Ray 2 when an existing clip needs video-to-video transformation or reframing across a broader set of aspect ratios and 1080p is enough.
Choose Luma Ray 2
Use the legacy Luma route to modify an existing video or reframe footage for wide, square, vertical, and ultrawide formats.
Key trade-off
LTX offers more duration, resolution, and audio; Luma offers source-video transformation and more aspect-ratio choices.
Best workflows
LTX fits fast campaign drafts and high-resolution generation. Luma fits repurposing, format adaptation, and legacy edit workflows.
LTX 2.3 Fast
6.7/10Editorial score
Higher-rated areas: Speed & reliability, Audio & lip sync
Luma Ray 2
6.7/10Editorial score
Higher-rated areas: Visual quality, Creative control
See the models in action
Independent examples, with different prompts and settings.
LTX 2.3 Fast
No published video for this model yet. Explore the available examples.
Explore examplesLuma Ray 2
No published video for this model yet. Explore the available examples.
Explore examplesCompare what matters
These are MaxVideoAI editorial assessments, not same-prompt test results. The dates below record score updates. MaxVideoAI sells access to the models it covers.
Score records last updated: LTX 2.3 Fast · Luma Ray 2
How we benchmark| Criterion · 0–10 | LTX 2.3 Fast | Luma Ray 2 |
|---|---|---|
| Follows your promptHow closely the result follows the prompt. | LTX 2.3 Fast7.1/10 | Luma Ray 27.1/10 |
| Visual qualityDetail, lighting and visible artifacts. | LTX 2.3 Fast6.9/10 | Luma Ray 28.3/10 |
| Natural movementHow naturally subjects and cameras move. | LTX 2.3 Fast7.2/10 | Luma Ray 26.9/10 |
| Human appearanceFaces, hands and body movement. | LTX 2.3 Fast7.0/10 | Luma Ray 27.4/10 |
| Audio & lip syncSpeech, sound and mouth movement in sync. | LTX 2.3 Fast7.3/10 | Luma Ray 2N/A |
| Creative controlHow much direction the model follows. | LTX 2.3 Fast7.1/10 | Luma Ray 27.8/10 |
6 of 10 criteria shown10 of 10 criteria shownCompare the 4 other criteriaHide additional criteria
| Criterion · 0–10 | LTX 2.3 Fast | Luma Ray 2 |
|---|---|---|
| Consistency over timeWhether details hold together over time. | LTX 2.3 Fast5.9/10 | Luma Ray 26.1/10 |
| Readable textHow readable generated text and interfaces are. | LTX 2.3 Fast6.2/10 | Luma Ray 25.8/10 |
| Multi-shot continuityContinuity between different shots. | LTX 2.3 Fast6.0/10 | Luma Ray 25.8/10 |
| Speed & reliabilityGeneration speed and reliability. | LTX 2.3 Fast9.0/10 | Luma Ray 26.8/10 |
Generate with
LTX 2.3 Fast
Generate with
Luma Ray 2
What will your video cost?
Compare prices by resolution. The final quote depends on your duration, mode and settings.
LTX 2.3 Fast
- Current price unavailable
The current quote could not be confirmed. Check your settings in the app before generating.
Luma Ray 2
- Current price unavailable
The current quote could not be confirmed. Check your settings in the app before generating.
Your settings. Your quote. Before you generate.
USD estimate · snapshot generated
Formats, inputs and controls
Check duration, resolution, supported inputs and controls. Open each model’s guide for its full feature set.
New clip · maximum
- LTX 2.3 Fast
- 20 s
- Luma Ray 2
- 9 s
Max resolution
- LTX 2.3 Fast
- 4K (6–10s); 1080p for >10s routing
- Luma Ray 2
- 1080p
Audio output
- LTX 2.3 Fast
- Supported
- Luma Ray 2
- Not supported
Compare all 17 specificationsClose the full specification tableCheck references, audio, camera controls and output formats.
| Key spec | LTX 2.3 Fast | Luma Ray 2 |
|---|---|---|
| Pricing (MaxVideoAI) | Current price unavailable | Current price unavailable |
| Text-to-Video | Supported | Supported |
| Image-to-Video | Supported | Supported |
| Video-to-Video | Not supported | Supported (modify / reframe workflows) |
| First/Last frame | Supported (start + end image in I2V) | Not supported |
| Reference image / style reference | Supported (single start image; no separate style-reference stack) | Supported (single start image) |
| Reference video | Not supported | Supported (source clip for modify / reframe) |
| Max resolution | 4K (6–10s); 1080p for >10s routing | 1080p |
| New clip · maximum | 20 sText to video, Image to video: 6 / 8 / 10 / 12 / 14 / 16 / 18 / 20 s | 9 sText to video, Image to video: 5 / 9 s |
| Aspect ratios | 16:9 / 9:16 | 16:9 / 9:16 / 1:1 / 4:3 / 3:4 / 21:9 / 9:21 |
| FPS options | 24 fps / 25 fps / 48 fps / 50 fps | 24 |
| Output format | MP4 | Data pending |
| Audio output | Supported | Not supported |
| Native audio generation | Supported | Not supported |
| Lip sync | Supported | Data pending |
| Camera / motion controls | Prompt-based only | Not supported |
| Watermark | No (MaxVideoAI) | No (MaxVideoAI) |
Duration choices depend on mode and resolution; check the creation settings.
Capabilities available in MaxVideoAI. Provider sources below; their verification dates are not recorded here.
LTX 2.3 Fast: fal.ai (1) · fal.ai (2) · fal.ai (3)
Luma Ray 2:
Recommended next steps
3 questions to help you choose
FAQ
Short answers for choosing between LTX 2.3 Fast generation and Luma Ray 2 editing.
Open a question to read the answer. One answer at a time.
Which model is better for fast 4K AI video?
LTX 2.3 Fast is the clear fit because it supports 4K output, native audio, and clips up to 20 seconds. Luma Ray 2 tops out at 1080p and does not generate audio.
What can Luma Ray 2 do that LTX 2.3 Fast cannot?
Luma Ray 2 includes video-to-video and reframe modes for transforming or resizing existing footage. LTX 2.3 Fast focuses on text-to-video and image-to-video generation.
Should I still choose the legacy Luma Ray 2 route?
Choose it when source-video modification or broad aspect-ratio reframing is the main job. For new audio-ready generation, longer clips, or high-resolution output, use LTX 2.3 Fast.