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Label Studio

Open-source data labeling and AI evaluation platform

Updated May 2026

Overview

Founded
2020
Headquarters
New York, NY, USA
Segment
Data Labeling & Annotation

Product overview

Label Studio is an open-source data labeling and annotation platform for building training and evaluation data across computer vision, NLP, audio, video, and LLM workflows. It supports human-in-the-loop labeling, model-assisted annotation, and AI evaluation workflows for teams building and monitoring machine learning systems.

Revenue model

Open-source software with enterprise subscriptions and support services

Moat

  • Switching Costs
  • Proprietary Technology
  • Ecosystem Lock-in

Label Studio’s moat is its open-source, highly flexible, multimodal annotation platform that users can customize for many data types and workflows, which lowers adoption friction and makes it a strong default for teams that want control. Its enterprise tier adds security, compliance, collaboration, and ML integration, creating switching costs for teams that build their labeling and fine-tuning pipelines around it.

Headwinds

Increasing competition from cloud providers offering integrated labeling services within their ML platforms.

Active layers