Best AI Data Labeling Tools in 2026
Updated
In short: doccano is ranked #1 of 21 as of 5 October 2026, ahead of Label Studio and Amazon SageMaker Autopilot. The best-ranked option with a free plan is Label Studio. The lowest first paid tier on this page is CVAT at $1.92/mo.
Preparing labeled data involves choices about the kinds of inputs a tool can support and how labeling work is reviewed. Compare supported modalities with model-assisted labeling and human review workflows. Custom ontologies and deployment options can help you assess fit with your setup, while API access, free-plan availability and paid-from pricing round out the criteria. doccano, Label Studio and Amazon SageMaker Autopilot are among the entries shown, alongside Roboflow and Supervisely. Consider the data you need to label, whether model assistance is relevant, and how people will review the results. The listed capabilities provide a basis for comparing tools against those practical needs.
21 AI data labeling tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
21ranked
8free plans on this page
$1.92/molowest paid tier
5 Oct 2026last checked
Input list AI Data Labeling Tools 21 channels on this page · 72 of 168 spec lines stated by the makers
Ch Tool Free planPaid fromSupported modalitiesModel-assisted labelingHuman review workflowsCustom ontologiesDeployment optionsAPI access Spec sheet Score
01 doccano Free plannot statedPaid fromnot statedSupported modalitiestext, image, audioModel-assisted labelingYesHuman review workflowsYesCustom ontologiesYesDeployment optionsself hostedAPI accessYes 6/8spec lines stated 7.8
02 Label Studio Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 7.8
03 Amazon SageMaker Autopilot Free planNoPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionscloudAPI accessnot stated 3/8spec lines stated 7.3
04 Roboflow Free planYesPaid from$79/moSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 4/8spec lines stated 7.3
05 Supervisely Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 7.3
06 BRAT Free plannot statedPaid fromnot statedSupported modalitiestextModel-assisted labelingYesHuman review workflowsYesCustom ontologiesYesDeployment optionsself hostedAPI accessYes 6/8spec lines stated 7.2
07 Prodigy Free planNoPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingnot statedHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 2/8spec lines stated 7.2
08 Alibaba Cloud PAI iTAG Free planYesPaid fromnot statedSupported modalitiesimage, text, video, audio, multimodalModel-assisted labelingYesHuman review workflowsYesCustom ontologiesYesDeployment optionscloudAPI accessnot stated 6/8spec lines stated 7.1
09 CVAT Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 7.1
10 LabelU Free plannot statedPaid fromnot statedSupported modalitiesimage, video, audioModel-assisted labelingYesHuman review workflowsYesCustom ontologiesYesDeployment optionsself hostedAPI accessYes 6/8spec lines stated 7.1
11 Argilla Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessnot stated 2/8spec lines stated 7.0
12 Labelbox Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 6.7
13 V7 Darwin Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 6.5
14 BasicAI Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 6.4
15 MoniSa DataOps Free plannot statedPaid fromnot statedSupported modalitiestext, image, audio, videoModel-assisted labelingnot statedHuman review workflowsYesCustom ontologiesnot statedDeployment optionsnot statedAPI accessnot stated 2/8spec lines stated 6.3
16 Intellisane Annotation Platform Free planYesPaid fromnot statedSupported modalitiesimage, video, audio, text, 3D point cloudsModel-assisted labelingnot statedHuman review workflowsYesCustom ontologiesYesDeployment optionscloudAPI accessnot stated 5/8spec lines stated 5.9
17 Dataloop Free plannot statedPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 2/8spec lines stated 5.7
18 SuperAnnotate Free plannot statedPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 2/8spec lines stated 5.7
19 Kili Technology Free planNoPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 5.5
20 Encord Free planNoPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingYesHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessYes 3/8spec lines stated 5.4
21 VGG Image Annotator Free planYesPaid fromnot statedSupported modalitiesnot statedModel-assisted labelingNoHuman review workflowsnot statedCustom ontologiesnot statedDeployment optionsnot statedAPI accessnot stated 2/8spec lines stated 5.4
Compare all 21 in a table
| # | Tool | Score | Free plan | From | Free plan | Paid from | Supported modalities | Model-assisted labeling |
|---|---|---|---|---|---|---|---|---|
| 1 | doccano | 7.8 | Free plan | Free | — | — | text, image, audio | Yes |
| 2 | Label Studio | 7.8 | Free plan | $99/mo | Yes | — | — | Yes |
| 3 | Amazon SageMaker Autopilot | 7.3 | No | — | No | — | — | Yes |
| 4 | Roboflow | 7.3 | Free plan | $39/mo | Yes | 79 /mo | — | Yes |
| 5 | Supervisely | 7.3 | Free plan | €199/mo | Yes | — | — | Yes |
| 6 | BRAT | 7.2 | Free plan | Free | — | — | text | Yes |
| 7 | Prodigy | 7.2 | No | — | No | — | — | — |
| 8 | Alibaba Cloud PAI iTAG | 7.1 | Free plan | Free | Yes | — | image, text, video, audio, multimodal | Yes |
| 9 | CVAT | 7.1 | Free plan | $1.92/mo | Yes | — | — | Yes |
| 10 | LabelU | 7.1 | No | — | — | — | image, video, audio | Yes |
| 11 | Argilla | 7.0 | Free plan | Free | Yes | — | — | Yes |
| 12 | Labelbox | 6.7 | No | — | Yes | — | — | Yes |
| 13 | V7 Darwin | 6.5 | No | — | Yes | — | — | Yes |
| 14 | BasicAI | 6.4 | No | $550/mo | Yes | — | — | Yes |
| 15 | MoniSa DataOps | 6.3 | No | — | — | — | text, image, audio, video | — |
| 16 | Intellisane Annotation Platform | 5.9 | No | — | Yes | — | image, video, audio, text, 3D point clouds | — |
| 17 | Dataloop | 5.7 | No | — | — | — | — | Yes |
| 18 | SuperAnnotate | 5.7 | No | — | — | — | — | Yes |
| 19 | Kili Technology | 5.5 | No | — | No | — | — | Yes |
| 20 | Encord | 5.4 | No | — | No | — | — | Yes |
| 21 | VGG Image Annotator | 5.4 | No | — | Yes | — | — | No |
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 data labeling tool is ranked first on Specifiction?
doccano is ranked #1 of 21 with a score of 7.8. Label Studio is second and Amazon SageMaker Autopilot third.
How many of these have a free plan?
8 of the 21 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.