Keylabs vs Ultralytics Platform
| Keylabs | Ultralytics Platform | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $29/mo |
| Open source | No | No |
| Platforms | Web | api, self-hosted, Web |
| Free plan | No | Yes |
| Annotation types | Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation | detection; instance segmentation; semantic segmentation; classification; pose estimation; oriented bounding boxes |
| Model-assisted labeling | Yes | Yes |
| Dataset export | Keylabs ZIP archive with JSON and PNG masks; COCO; YOLO; CSV filename mapping | Ultralytics NDJSON |
| Team collaboration | Yes | Yes |
| API access | Yes | Yes |
| Paid from | — | 29 /user/mo |
| Image formats | — | JPEG; PNG; WebP; TIFF; HEIC; AVIF; BMP; JP2; DNG; MPO |
Both are listed in Best Image Annotation Software. On Samsung Mobile US Press, Ultralytics Platform scores higher on our published basis.