HumanSignal provides data labeling and annotation infrastructure for machine learning teams. The company's core product, Label Studio, is an open-source platform that enables data scientists to configure annotation workflows, capture nuanced human decisions, and scale operations with automation. Founded in 2019, the company has grown to serve over 250,000 users and counts Zendesk, Outreach, and Trivago among its customers.
The platform addresses a fundamental challenge in AI development: preparing high-quality training data. Label Studio allows teams to customize every aspect of the annotation process rather than relying on one-size-fits-all solutions. The tool emphasizes the role of human oversight in machine learning pipelines, enabling organizations to combine human judgment with automated workflows as they scale their data labeling operations.
HumanSignal has raised $30 million in venture funding and operates as a remote-first organization with staff across North America, Europe, and South America. The company maintains an open-source development model while building commercial offerings around its core labeling infrastructure, serving enterprise data science teams across industries including customer service software, sales platforms, travel technology, and broader enterprise AI applications.
