Best AI Image Annotation Tools in 2026
Updated
Image annotation workflows vary by the labels you need, how teams review them, and how the resulting data moves into other systems. Compare AI-assisted labeling and annotation types alongside review workflow, export formats, API access, and deployment. CVAT, Amazon SageMaker Autopilot, and COCO Annotator are among the options shown. These details help you assess whether a tool fits the way you prepare and validate image data, including the integrations or deployment approach your setup calls for. Free-plan availability and paid-from pricing add cost context to the feature comparison.
24ranked
8free plans on this page
$0.83/molowest paid tier
9 Oct 2026last checked
AI Image Annotation Tools, one module each.A lit port is something its maker publishes; 19 of 19 with a known API signal have a public API.
- 01 CVAT API yesFREE yesDOCS 7.4$1.92/mo
- 02 Amazon SageMaker Autopilot API yesFREE yesDOCS 7.3
- 03 COCO Annotator API yesFREE yesDOCS 7.3Free
- 04 Label Studio API yesFREE yesDOCS 7.3$99/mo
- 05 Roboflow API yesFREE yesDOCS 7.3$39/mo
- 06 Segments.ai API yesFREE yesDOCS 7.3Free
- 07 Supervisely API yesFREE yesDOCS 7.3€199/mo
- 08 Labelbox API yesDOCS 7.0
- 09 Pixano API yesDOCS 7.0
- 10 YoloLabel API yesDOCS 7.0
- 11 BasicAI API yesDOCS 6.9$550/mo
- 12 Dataloop API yesDOCS 6.9
- 13 Scale Rapid API yesDOCS 6.9
- 14 SuperAnnotate API yesDOCS 6.9
- 15 V7 Darwin API yesDOCS 6.9
- 16 Keylabs API yesFREE noDOCS 6.8
- 17 Prodigy API yesFREE noDOCS 6.8
- 18 Encord API yesDOCS 6.7
- 19 Kili Technology API yesFREE noDOCS 6.7
- 20 VGG Image Annotator FREE yesDOCS 5.9Free
- 21 MakeSense.ai FREE yesDOCS 5.8Free
- 22 Guanex AI Annotation Platform DOCS 5.6
- 23 LabelMe DOCS 5.6
- 24 RectLabel FREE noDOCS 5.3$0.83/mo
Compare all 24 in a table
| # | Platform | Score | Free plan | Free plan | Paid from | Annotation types | AI-assisted labeling |
|---|---|---|---|---|---|---|---|
| 1 | CVAT | 7.4 | Free plan | Yes | 23 /user/mo | Rectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/mask | |
| 2 | Amazon SageMaker Autopilot | 7.3 | No | ||||
| 3 | COCO Annotator | 7.3 | Free plan | Yes | bounding boxes, polygons, segmentation masks, keypoints, points | Yes | |
| 4 | Label Studio | 7.3 | Free plan | Yes | rectangles, ellipses, keypoints, polygons, brush masks, image classification | ||
| 5 | Roboflow | 7.3 | Free plan | Yes | bounding boxes, polygons, segmentation masks, classification labels, keypoints | ||
| 6 | Segments.ai | 7.3 | Free plan | No | segmentation, bounding box, polygon, polyline, keypoint, cuboid | ||
| 7 | Supervisely | 7.3 | Free plan | Yes | rectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboid | ||
| 8 | Labelbox | 7.0 | Yes | bounding boxes, segmentation masks, image classification, radio classification | |||
| 9 | Pixano | 7.0 | Yes | bounding boxes, polygons, pixel masks, keypoints, cuboids, classification, tracking | |||
| 10 | YoloLabel | 7.0 | Yes | bounding boxes | Yes | ||
| 11 | BasicAI | 6.9 | Yes | 9 /user/mo | object detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentation | ||
| 12 | Dataloop | 6.9 | bounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotation | ||||
| 13 | Scale Rapid | 6.9 | bounding box, polygon, line, cuboid, ellipse, point | ||||
| 14 | SuperAnnotate | 6.9 | classification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeleton | ||||
| 15 | V7 Darwin | 6.9 | Yes | Polygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance ID | |||
| 16 | Keylabs | 6.8 | No | No | Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation | ||
| 17 | Prodigy | 6.8 | No | No | bounding boxes, polygons, image segments, image classification | Yes | |
| 18 | Encord | 6.7 | No | bounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classifications | |||
| 19 | Kili Technology | 6.7 | No | No | bounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classification | ||
| 20 | VGG Image Annotator | 5.9 | Free plan | Yes | rectangle, circle, ellipse, point, polygon, polyline | ||
| 21 | MakeSense.ai | 5.8 | Free plan | Yes | point, line, rectangle, polygon, label | ||
| 22 | Guanex AI Annotation Platform | 5.6 | classification, object detection, segmentation, multi-object tracking | Yes | |||
| 23 | LabelMe | 5.6 | Yes | polygon, scribble, mask | No | ||
| 24 | RectLabel | 5.3 | No | No | boxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labels |
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