Series A · AI & Machine Learning · Warsaw, Poland · Founded 2017 · 90–94 employees
Neptune.ai is an MLOps experiment tracking platform that provides tools for monitoring and analyzing AI model training, particularly for large-scale foundation models. The company was recently acquired by OpenAI in December 2025 for under $400 million, validating its technology's importance in AI model development. Founded in 2017 and spun out from Deepsense.ai, Neptune has raised over $18 million from investors including Almaz Capital and TDJ Pitango Ventures, serving customers like Samsung, Roche, and HP with its scalable platform that can ingest 100k data points per second.
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