AI observability

OpenAI has agreed to acquire Neptune, a startup that provides monitoring and debugging tools for training large AI models. The two firms, already collaborators on a metrics dashboard, plan to deepen integration, with Neptune’s services being phased out as its technology is embedded into OpenAI’s training stack. The deal’s financial terms were undisclosed. This acquisition follows OpenAI’s recent purchases of Software Applications Incorporated, Statsig, and io, signaling its push to become a full‑stack AI infrastructure provider and strengthen model observability for enterprise customers.