OpenAI moves to acquire Neptune to strengthen AI model training tools

OpenAI has entered into a definitive agreement to acquire neptune.ai, a startup that builds experiment-tracking and training-monitoring tools used to debug and improve large AI models. The deal, reportedly valued at under $400 million in stock according to media accounts, will bring Neptune’s metrics and dashboarding stack in-house as OpenAI seeks deeper visibility into how its frontier models learn and to accelerate research workflows.