Labelbox

Track and analyze per-sample annotation costs and budget allocation across projects.

Detailed metrics on annotator performance, speed, accuracy, and consistency patterns.

Gamified performance tracking with leaderboards to motivate high-quality annotations.

Interface and documentation available in multiple languages for global teams.

Multiple annotators work simultaneously on shared projects with live updates and conflict resolution.

SOC 2 Type II certified platform with HIPAA compliance support for healthcare data.

Pre-built templates for common annotation tasks including object detection, classification, and segmentation.

Create domain-specific classification hierarchies and annotation schemas tailored to your models.

Tools for drawing bounding boxes, polygons, and segmentation masks on images for computer vision tasks.

Named entity recognition, sentiment analysis, and text classification tools for NLP model training.

Frame-by-frame annotation tools with tracking capabilities for object detection and action recognition in video data.

Filter and search datasets by metadata, annotations, and custom attributes with saved searches.

Export labeled data in multiple formats including COCO, Pascal VOC, YOLO, and custom formats.

Upload and process large datasets in bulk with support for multiple file formats.

Track changes to datasets and annotations over time with full audit history and rollback capabilities.

Automatically add tags, categories, and custom metadata to datasets based on annotation patterns.

Automatically identify and flag duplicate or near-duplicate samples in your dataset.

Fully-featured REST API for programmatic access to annotation data and workflow automation.

Official Python library for seamless integration with ML pipelines and data processing workflows.

Extend platform functionality with custom annotation tools and integrations through plugin architecture.

Direct connections to AWS S3, Google Cloud Storage, and Azure Blob for seamless data access.

Send real-time notifications and trigger downstream processes when labeling tasks are completed.

Compare multiple annotator responses and use consensus algorithms to improve label accuracy.

Compare annotation quality against industry standards and best practices for your domain.

Monitor annotation quality metrics, accuracy rates, and reviewer performance in real-time.

Complete tracking of all user actions and data modifications for compliance and accountability.

End-to-end encryption for data in transit and at rest with support for customer-managed keys.

Fine-grained permissions for team members with project, task, and data-level security controls.

Single sign-on support for enterprise authentication systems including Okta and Azure AD.

Dedicated account manager and priority support queue for enterprise customers.

24/7 access to documentation, knowledge base articles, and community forums.

Eye-friendly dark theme option for extended annotation sessions.

Customizable keyboard shortcuts and hotkeys to accelerate annotation workflows.

Responsive design supporting tablet and mobile devices for on-the-go annotation work.

Continue annotating without internet connectivity with automatic sync when reconnected.

Real-time visibility into project completion percentage, task status, and team productivity metrics.

Automated and manual distribution of annotation tasks to team members with workload balancing.

Define conditional logic and rules to automatically route tasks and manage annotation workflows.