Company

Neptune Labs, Inc.

Neptune Labs, Inc. operates an experiment tracking platform that helps AI researchers monitor and debug large-scale training runs.

About

Founded in 2017 in Warsaw, Poland, Neptune Labs offers a subscription experiment tracking platform for foundation models, with self-hosted options for on-premises or private cloud use. Its clients are AI research institutions and companies in North America, Europe and Asia. In December 2025, OpenAI agreed to acquire the company from b2venture, Rheingau Founders, TDJ Pitango and Almaz Capital Partners in an all-stock transaction worth approximately USD 400 million.

2Funding rounds

4Investors

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