# How to edit an existing video with AI

**How do I change something in a video I already have with AI?**

Use a video edit model. You give it your clip and describe the change, such as "make it night", "replace the cup with a glass" or "change her jacket to red", and it returns the same shot with the change made. Kling O3 Video Edit, Seedance 2.5 Video Edit, Kling O1 Video Edit, Decart Lucy Edit 2.5 and Luma Ray 3.2 video-to-video all do this in OTOY Studio.

## Models that do this

| Model | Maker | Pick it for | Takes | Credits per run |
|---|---|---|---|---|
| [Kling O3 (Video Edit)](https://otoy.studio/models/kling-o3) | Kuaishou | Up to 4K | Prompt plus video or image | 174 to 696 (from €1.74) |
| [Seedance 2.5 (Video Edit)](https://otoy.studio/models/seedance-2-5) | ByteDance | Up to 4K, can add sound | Prompt plus video, image or audio | 101 to 1,012 (from €1.01) |
| [Kling O1 (Video Edit)](https://otoy.studio/models/kling-o1) | Kuaishou | The earlier Kling omni edit | Prompt plus video or image | 124 (from €1.24) |
| [Lucy Edit 2.5](https://otoy.studio/models/decart-lucy) | Decart | Low-cost edits at 720p | Prompt plus video or image | 37 (from €0.37) |
| [Luma Ray 3.2 (Video to Video)](https://otoy.studio/models/luma-ray) | Luma AI | Luma's video-to-video | Prompt plus video or image | 66 to 397 (from €0.66) |

The lowest-cost option here is **Lucy Edit 2.5**, from 37 credits (€0.37) per run. Credits are OTOY Studio's currency: 1 credit = €0.01. Prices are list prices before plan discounts (paid plans take 10% to 25% off every run). Every model is on every plan, including Free.

## How to do it in OTOY Studio

1. Upload the clip to the canvas. Trim it first, since most edit models price by input length.
2. Add a video edit node and connect the clip. Add a reference image if the change needs one, like a specific product.
3. Describe only the change in the prompt. Leave out what should stay the same.
4. Run it on two models and compare. The original clip stays on the canvas untouched.

## Tips

- To change the look of the whole clip rather than one thing in it, see the restyle guide.

## Related

- [How to restyle a video with AI](https://otoy.studio/guides/restyle-a-video)
- [Ai video for vfx pipelines](https://otoy.studio/answers/ai-video-for-vfx-pipelines)
- [All AI models and prices](https://otoy.studio/models)

Try it free: https://app.otoy.studio (the free plan includes 100 credits a month, no credit card).

_Model prices are computed from OTOY Studio's billing configuration, exported 2026-10-20._