> For the complete documentation index, see [llms.txt](https://docs.roboflow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.roboflow.com/changelog/explore-by-month/november-2025/fine-tune-sam-3-on-roboflow.md).

# Fine-Tune SAM 3 on Roboflow

<figure><img src="/files/rQF5zqBsGy48rHVUjfPM" alt="" width="442"><figcaption></figcaption></figure>

Released on November 19th, 2025, [Segment Anything 3 (SAM 3)](https://blog.roboflow.com/what-is-sam3/) is a new, zero-shot instance segmentation developed by Meta. You can use SAM 3 to generate precise segmentation masks for objects in an image or video using either text or point prompts.

You can fine-tune SAM 3 with any instance segmentation dataset hosted on Roboflow. To fine-tune a SAM 3 model, create a new dataset version in your instance segmentation project, then select SAM 3 from the list of training options on your dataset version page.