Best AI Image Annotation Tools in 2026
Updated
In short: Label Studio is ranked #1 of 24 as of 4 October 2026, ahead of COCO Annotator and Roboflow. 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 visual data, and their differences matter when you need particular annotation types or a specific review process. Compare AI-assisted labeling with available annotation types, review workflow, and export formats. API access and deployment options can help you assess integration and where the tool runs, while free plans and starting prices give cost context. The ranking begins with CVAT, Roboflow, and Label Studio, followed by BasicAI and Pixano. Consider how labels will be created and reviewed, what formats you need to export, and whether API access or a particular deployment model matters for your work.
24 AI image annotation tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 Label Studio Top pick · 7.3 Free plan · $99/mo
#2 COCO Annotator Runner-up · 7.1 Free plan · Free
#3 Roboflow Also great · 7.1 Free plan · $39/mo
- Free planFree trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Annotation types
- rectangles, ellipses, keypoints, polygons, brush masks, image classification
RecognisedDocumentedFree planPlatforms$99/mofirst paid tier About Label StudioVisit site - Free plan apiLinuxself-hostedWebWindows
- Free plan
- Yes
- Annotation types
- bounding boxes, polygons, segmentation masks, keypoints, points
- AI-assisted labeling
- Yes
- Export formats
- COCO JSON
RecognisedDocumentedFree planPlatforms - Free plan AndroidapiiOSself-hostedWeb
- Free plan
- Yes
- Annotation types
- bounding boxes, polygons, segmentation masks, classification labels, keypoints
RecognisedDocumentedFree planPlatforms$39/mofirst paid tier About RoboflowVisit site - Free plan apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 23 /user/mo
- Annotation types
- Rectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/mask
RecognisedDocumentedFree planPlatforms$1.92/mofirst paid tier About CVATVisit site - Free trial apiWeb
- Free plan
- No
- Review workflow
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiself-hostedWeb
- Free plan
- Yes
- Annotation types
- rectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboid
RecognisedDocumentedFree planPlatforms€199/mofirst paid tier About SuperviselyVisit site - apiLinuxmacOSself-hostedWebWindows
- Free plan
- Yes
- Annotation types
- bounding boxes, polygons, pixel masks, keypoints, cuboids, classification, tracking
RecognisedDocumentedFree planPlatforms - apiLinuxmacOSself-hostedWindows
- Free plan
- Yes
- Annotation types
- bounding boxes
- AI-assisted labeling
- Yes
- Review workflow
- Yes
- Export formats
- YOLO TXT
RecognisedDocumentedFree planPlatforms - Free trial apiLinuxmacOSself-hostedWebWindows
- Free plan
- No
- Annotation types
- bounding boxes, polygons, image segments, image classification
- AI-assisted labeling
- Yes
- Review workflow
- Yes
- Export formats
- JSON, JSONL
RecognisedDocumentedFree planPlatforms - apiWeb
- Free plan
- Yes
- Annotation types
- bounding boxes, segmentation masks, image classification, radio classification
RecognisedDocumentedFree planPlatforms - apiself-hostedWeb
- Free plan
- Yes
- Paid from
- 9 /user/mo
- Annotation types
- object detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentation
RecognisedDocumentedFree planPlatforms$550/mofirst paid tier About BasicAIVisit site - Web
- Free plan
- Yes
- Annotation types
- polygon, scribble, mask
- AI-assisted labeling
- No
- Export formats
- XML
RecognisedDocumentedFree planPlatforms - WebWindowsmacOSLinux
- Free plan
- Yes
- Annotation types
- point, line, rectangle, polygon, label
RecognisedDocumentedFree planPlatforms - Web
- Annotation types
- bounding box, polygon, line, cuboid, ellipse, point
- Review workflow
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Annotation types
- Polygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance ID
RecognisedDocumentedFree planPlatforms - Web
- Annotation types
- bounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotation
RecognisedDocumentedFree planPlatforms -
- Annotation types
- classification, object detection, segmentation, multi-object tracking
- AI-assisted labeling
- Yes
- Review workflow
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Annotation types
- classification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeleton
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Annotation types
- bounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classification
RecognisedDocumentedFree planPlatforms - macOS
- Free plan
- No
- Annotation types
- boxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labels
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Annotation types
- segmentation, bounding box, polygon, polyline, keypoint, cuboid
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Annotation types
- rectangle, circle, ellipse, point, polygon, polyline
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Annotation types
- bounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classifications
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
- Annotation types
- Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation
RecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which AI image annotation tool is ranked first on Everything Xiaomi?
Label Studio is ranked #1 of 24 with a score of 7.3. COCO Annotator is second and Roboflow third.
How many of these have a free plan?
5 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: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.