Best AI Image Annotation Tools in 2026
Updated
In short: Label Studio is ranked #1 of 24 as of 5 October 2026, ahead of Amazon SageMaker Autopilot and COCO Annotator. The best-ranked option with a free plan is COCO Annotator. The lowest first paid tier on this page is CVAT at $1.92/mo.
AI image annotation tools support labeling image data, with annotation types and review workflow among the criteria to compare. Compared on AI-assisted labeling, API access, and deployment, the entries also specify export formats that can matter when annotations move into another part of your work. Free plans and paid-from prices add cost context. Label Studio, Amazon SageMaker Autopilot, and COCO Annotator are among the options shown. Consider the annotation types your work requires, how reviewers should check results, and which export formats and setup details matter for your process.
24 AI image annotation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
24ranked
6free plans on this page
$1.92/molowest paid tier
5 Oct 2026last checked
Input list AI Image Annotation Tools 24 channels on this page · 83 of 192 spec lines stated by the makers
Ch Tool Free planPaid fromAnnotation typesAI-assisted labelingReview workflowExport formatsAPI accessDeployment Spec sheet Score
01 Label Studio Free planYesPaid fromnot statedAnnotation typesrectangles, ellipses, keypoints, polygons, brush masks, image classificationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 7.8
02 Amazon SageMaker Autopilot Free planNoPaid fromnot statedAnnotation typesnot statedAI-assisted labelingnot statedReview workflowYesExport formatsnot statedAPI accessnot statedDeploymentcloud 3/8spec lines stated 7.3
03 COCO Annotator Free planYesPaid fromnot statedAnnotation typesbounding boxes, polygons, segmentation masks, keypoints, pointsAI-assisted labelingYesReview workflownot statedExport formatsCOCO JSONAPI accessYesDeploymentself-hosted 6/8spec lines stated 7.3
04 Prodigy Free planNoPaid fromnot statedAnnotation typesbounding boxes, polygons, image segments, image classificationAI-assisted labelingYesReview workflowYesExport formatsJSON, JSONLAPI accessYesDeploymentboth 7/8spec lines stated 7.3
05 Roboflow Free planYesPaid fromnot statedAnnotation typesbounding boxes, polygons, segmentation masks, classification labels, keypointsAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 7.3
06 Supervisely Free planYesPaid fromnot statedAnnotation typesrectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboidAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 7.3
07 CVAT Free planYesPaid from23/user/moAnnotation typesRectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/maskAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 4/8spec lines stated 7.1
08 Pixano Free planYesPaid fromnot statedAnnotation typesbounding boxes, polygons, pixel masks, keypoints, cuboids, classification, trackingAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 7.1
09 YoloLabel Free planYesPaid fromnot statedAnnotation typesbounding boxesAI-assisted labelingYesReview workflowYesExport formatsYOLO TXTAPI accessnot statedDeploymentself-hosted 6/8spec lines stated 7.0
10 Labelbox Free planYesPaid fromnot statedAnnotation typesbounding boxes, segmentation masks, image classification, radio classificationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 6.7
11 BasicAI Free planYesPaid from9/user/moAnnotation typesobject detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 4/8spec lines stated 6.5
12 V7 Darwin Free planYesPaid fromnot statedAnnotation typesPolygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance IDAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 6.5
13 MakeSense.ai Free planYesPaid fromnot statedAnnotation typespoint, line, rectangle, polygon, labelAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessnot statedDeploymentnot stated 2/8spec lines stated 6.1
14 LabelMe Free planYesPaid fromnot statedAnnotation typespolygon, scribble, maskAI-assisted labelingNoReview workflownot statedExport formatsXMLAPI accessYesDeploymentself-hosted 6/8spec lines stated 6.0
15 Scale Rapid Free plannot statedPaid fromnot statedAnnotation typesbounding box, polygon, line, cuboid, ellipse, pointAI-assisted labelingnot statedReview workflowYesExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 5.8
16 Dataloop Free plannot statedPaid fromnot statedAnnotation typesbounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 2/8spec lines stated 5.7
17 Guanex AI Annotation Platform Free plannot statedPaid fromnot statedAnnotation typesclassification, object detection, segmentation, multi-object trackingAI-assisted labelingYesReview workflowYesExport formatsnot statedAPI accessnot statedDeploymentself-hosted 4/8spec lines stated 5.7
18 SuperAnnotate Free plannot statedPaid fromnot statedAnnotation typesclassification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeletonAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 2/8spec lines stated 5.7
19 Kili Technology Free planNoPaid fromnot statedAnnotation typesbounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classificationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 5.5
20 RectLabel Free planNoPaid fromnot statedAnnotation typesboxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labelsAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessnot statedDeploymentnot stated 2/8spec lines stated 5.5
21 Segments.ai Free planNoPaid fromnot statedAnnotation typessegmentation, bounding box, polygon, polyline, keypoint, cuboidAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 5.5
22 Encord Free planNoPaid fromnot statedAnnotation typesbounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classificationsAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 5.4
23 Keylabs Free planNoPaid fromnot statedAnnotation typesBounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotationAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessYesDeploymentnot stated 3/8spec lines stated 5.4
24 VGG Image Annotator Free planYesPaid fromnot statedAnnotation typesrectangle, circle, ellipse, point, polygon, polylineAI-assisted labelingnot statedReview workflownot statedExport formatsnot statedAPI accessnot statedDeploymentnot stated 2/8spec lines stated 5.4
Compare all 24 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Annotation types | AI-assisted labeling |
|---|---|---|---|---|---|---|---|---|
| 1 | Label Studio | 7.8 | Free plan | $99/mo | Yes | — | rectangles, ellipses, keypoints, polygons, brush masks, image classification | — |
| 2 | Amazon SageMaker Autopilot | 7.3 | No | — | No | — | — | — |
| 3 | COCO Annotator | 7.3 | Free plan | Free | Yes | — | bounding boxes, polygons, segmentation masks, keypoints, points | Yes |
| 4 | Prodigy | 7.3 | No | — | No | — | bounding boxes, polygons, image segments, image classification | Yes |
| 5 | Roboflow | 7.3 | Free plan | $39/mo | Yes | — | bounding boxes, polygons, segmentation masks, classification labels, keypoints | — |
| 6 | Supervisely | 7.3 | Free plan | €199/mo | Yes | — | rectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboid | — |
| 7 | CVAT | 7.1 | Free plan | $1.92/mo | Yes | 23 /user/mo | Rectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/mask | — |
| 8 | Pixano | 7.1 | No | — | Yes | — | bounding boxes, polygons, pixel masks, keypoints, cuboids, classification, tracking | — |
| 9 | YoloLabel | 7.0 | No | — | Yes | — | bounding boxes | Yes |
| 10 | Labelbox | 6.7 | No | — | Yes | — | bounding boxes, segmentation masks, image classification, radio classification | — |
| 11 | BasicAI | 6.5 | No | $550/mo | Yes | 9 /user/mo | object detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentation | — |
| 12 | V7 Darwin | 6.5 | No | — | Yes | — | Polygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance ID | — |
| 13 | MakeSense.ai | 6.1 | Free plan | Free | Yes | — | point, line, rectangle, polygon, label | — |
| 14 | LabelMe | 6.0 | No | — | Yes | — | polygon, scribble, mask | No |
| 15 | Scale Rapid | 5.8 | No | — | — | — | bounding box, polygon, line, cuboid, ellipse, point | — |
| 16 | Dataloop | 5.7 | No | — | — | — | bounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotation | — |
| 17 | Guanex AI Annotation Platform | 5.7 | No | — | — | — | classification, object detection, segmentation, multi-object tracking | Yes |
| 18 | SuperAnnotate | 5.7 | No | — | — | — | classification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeleton | — |
| 19 | Kili Technology | 5.5 | No | — | No | — | bounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classification | — |
| 20 | RectLabel | 5.5 | No | — | No | — | boxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labels | — |
| 21 | Segments.ai | 5.5 | No | — | No | — | segmentation, bounding box, polygon, polyline, keypoint, cuboid | — |
| 22 | Encord | 5.4 | No | — | No | — | bounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classifications | — |
| 23 | Keylabs | 5.4 | No | — | No | — | Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation | — |
| 24 | VGG Image Annotator | 5.4 | No | — | Yes | — | rectangle, circle, ellipse, point, polygon, polyline | — |
Is your tool on this list?
Numbered spots on this list can be sponsored, and a sponsored row is labelled as paid.
Questions about this list
Which AI image annotation tool is ranked first on Specifiction?
Label Studio is ranked #1 of 24 with a score of 7.8. Amazon SageMaker Autopilot is second and COCO Annotator third.
How many of these have a free plan?
6 of the 24 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, CVAT has the lowest first paid tier we found: $1.92/mo.
How is this list ranked?
Ranked on what each maker publishes, the fullest spec sheet first: how deeply the product is documented, the platforms it runs on, a free tier or trial to test it, and its standing.