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Seedance Pro 1.5 vs Veo 3.1 FLI2V vs LTX 2.3 Pro I2V Comparison
Which Video Model Should You Choose?
Seedance Pro 1.5 vs Veo 3.1 First Frame to Last Frame vs LTX 2.3 Pro Image to Video
Best choice for talking videos, cleaner speech, stronger acting, and the most realistic audio in our tests.
Best when you need stronger motion planning, more scene control, and first-frame-to-last-frame direction.
Best when you want a workable baseline, quick experimentation, and a more flexible testing workflow.
Disclaimer
This comparison is directional, not definitive. Results can vary depending on your prompt, input image, motion complexity, and the style of video you are creating.
What each model is best at
A quick performance summary by strength.
- Best audio
- Best speech clarity
- Best acting
- Best overall quality
Seedance performed best for speaking-first videos. It handled lip sync, delivery, and realism more consistently than the other two models in our tests.
- Best motion control
- Best scene direction
- Strong acting
- Good visual structure
Veo was strongest when the video needed planned motion, more visual control, and a cleaner first-frame-to-last-frame workflow.
- Best baseline
- Good for iteration
- Flexible workflow
- Testing friendly
LTX was the most useful as a baseline or backup model. It was serviceable across all areas, but it did not match Seedance or Veo on final polish.
API
Floyo API
Image to Video
Seedance 1.5 Pro
Draft mode lets you first experiment at a low cost by generating 480p draft videos
Seedance 1.5 Pro with Draft Mode
Draft mode lets you first experiment at a low cost by generating 480p draft videos
Veo 3.1 Image to Video - First Frame and Optional Last Frame
LTX 2.3 Pro Image to Video
LTX 2.3
Comparision video
Score summary
Ratings are based on our internal speaking-video tests.
Best model by use case
A simple guide for choosing the right model quickly.
| Use case | Best model | Why |
|---|---|---|
| Talking character with speech | Seedance Pro 1.5 | Best audio, best speech clarity, and strongest acting in our tests. |
| Dialogue scenes | Seedance Pro 1.5 | Most natural emotional speaking performance. |
| First frame to last frame animation | Veo 3.1 FLI2V | Better fit when motion direction and frame control matter. |
| Motion-led visual shot | Veo 3.1 FLI2V | Stronger scene structure and more controlled movement. |
| Rapid testing and drafts | LTX 2.3 Pro I2V | Useful for baseline results and workflow experimentation. |
| Best all-round speaking result | Seedance Pro 1.5 | Most reliable overall result in our internal speaking-video tests. |
Final takeway
Winner for this test set: Seedance Pro 1.5
If your video has people talking, start with Seedance Pro 1.5. If your scene needs stronger motion control or first-frame-to-last-frame direction, use Veo 3.1 FLI2V. If you want a baseline model for drafts and testing, use LTX 2.3 Pro I2V.
Looking for open-source alternatives?
Open-Source Comparison
If you are exploring free, self-hostable, or open-source video models before committing to a paid API workflow, we also have a dedicated comparison between LTX 2.3, Wan 2.2, and Wan 2.2 Animate. For that, explore our Wan 2.2 vs LTX 2.3 Open-Source Comparison.