Labelbox
AI-powered data labeling platform for ML teams
- Freemium
- Web
- Data & AnalyticsWritingAI Data Labeling
- Free plan available
- No credit card

What is Labelbox?
Key features
Multi-type data annotation
label images, text, video, audio, and other data formats within a single interface
Collaborative workspace
assign labeling tasks to team members or external annotators with clear instructions and quality control checks
Project management tools
organise datasets into projects, track completion status, and manage multiple labeling campaigns simultaneously
Quality assurance workflows
implement review stages and consensus-based labeling to catch errors before training
API and integrations
connect Labelbox to existing ML pipelines and tools for automated data preparation
Dataset versioning
maintain records of labeled data versions to support model iteration and reproducibility
Pros & cons
Advantages
- Handles multiple data types, so you don't need separate tools for image versus text annotation
- Freemium option lets small teams or individuals test the tool without immediate cost
- Reduces friction in the data labeling workflow through a unified interface rather than manual processes
- Built-in quality control features help maintain consistency across large labeling efforts
Limitations
- Pricing for teams beyond the free tier can increase significantly as labeling volume grows
- Requires setup and configuration time to integrate with existing ML workflows and tools
- Managing large external labeling workforces may require additional coordination outside the platform
Use cases
Computer vision projects needing large volumes of labeled images for object detection or classification
Natural language processing tasks where text documents must be categorised, tagged, or annotated
Video analysis projects requiring frame-by-frame or segment-level annotations
Quality assurance for ML models by creating test datasets with verified labels
Crowdsourced data labeling efforts where work is distributed to multiple annotators
Ready to try Labelbox?
Pricing
Free
Free
Basic labeling functionality; limited to small teams and datasets; suitable for evaluation and small-scale projects
Pro
Custom pricing
Advanced features including API access, enhanced collaboration tools, priority support, and larger dataset capacity
Enterprise
Custom pricing
Dedicated account management, custom integrations, on-premise deployment options, and service level agreements
Get started with Labelbox
Click through to Labelbox and start using it now.
- Free plan available
- No credit card