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M&A Deal Summary

OpenAI Acquires Neptune.ai

On December 3, 2025, OpenAI acquired information technology company Neptune.ai

Acquisition Highlights
  • This is OpenAI’s 2nd transaction in the Information Technology sector.
  • This is OpenAI’s 5th transaction in the United States.
  • This is OpenAI’s 3rd transaction in California.

M&A Deal Summary
Date 2025-12-03
Target Neptune.ai
Sector Information Technology
Buyer(s) OpenAI
Deal Type Add-on Acquisition

Target

Neptune.ai

Palo Alto, California, United States
Neptune.ai monitors per-layer metrics, losses, gradients, and activations at any scale. It helps to visualize them with no lag and no missed spikes. Drill down into logs and debug training issues fast. Neptune.ai was formed in 2017 and is based in Palo Alto, California.

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Buyer(S) 1

Buyer

OpenAI

San Francisco, California, United States
Category Company
Founded 2015
Sector Information Technology
DESCRIPTION

OpenAI is an AI research and deployment company provides artificial intelligence products ChatGPT, DALL·E 2 and Whisper. OpenAI was founded in 2015 and is based in San Francisco, California.

DEAL STATS #
Overall 5 of 5
Sector: Information Technology M&A 2 of 2
Type: Add-on Acquisition M&A Deals 5 of 5
State: California M&A 3 of 3
Country: United States M&A 5 of 5
Year: 2025 M&A 3 of 3
PREVIOUS DEAL
DATE TARGET DEAL TYPE VALUE
2025-10-23 Software Applications

San Francisco, California, United States

Software Applications developed Sky, a macOS-native AI interface that enables contextual, screen-aware assistance across writing, planning, coding, and productivity workflows. Software Applications was founded in 2023 and is based in San Francisco, California.

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