Label Studio is an open-source platform for data labelling, AI evaluation and human-in-the-loop workflows. Data scientists use it to build training, fine-tuning and validation datasets and the review workflows around them. The open-source edition is available under the Apache-2.0 licence and can be installed on the organisation's own servers. The vendor also offers Label Studio Enterprise, a commercial version with added security, automation and quality-review features, which is offered as a cloud service.
HumanSignal, Inc. maintains Label Studio. The company was founded in 2019, was formerly named Heartex, and is headquartered in San Francisco, California. The company's website does not state where its cloud service stores data, so European organisations considering the cloud edition should ask for hosting locations first. Because the open-source edition runs on the organisation's own infrastructure, sensitive datasets can stay on infrastructure it controls.