Tech entrepreneur Elon Musk has warned Microsoft CEO Satya Nadella that AI company OpenAI will eat his company alive.

Nadella remarked on a day when OpenAI chief Sam Altman-led tech giant rolled out GPT-5 across its platforms.

Nadella on Thursday shared an update on GPT-5 and wrote on X: "Today, GPT-5 launches across our platforms, including Microsoft 365 Copilot, Copilot, GitHub Copilot, and Azure AI Foundry."

"It's the most capable model yet from our partners at OpenAI, bringing powerful new advances in reasoning, coding, and chat, all trained on Azure," he said.

He further said: "It’s hard to believe it’s only been two and a half years since @sama joined us in Redmond to show the world GPT-4 for the first time in Bing, and it’s incredible to see how far we’ve come since that moment. "

Nadella further said: "The pace of progress is only accelerating, and I can’t wait to see what developers, enterprises, and consumers will do with this latest breakthrough"

In the comment section of the thread, Musk wrote: "OpenAI is going to eat Microsoft alive."

Responding to Musk's remark, Nadella said: " People have been trying for 50 years and that’s the fun of it! Each day you learn something new, and innovate, partner, and compete. Excited for Grok 4 on Azure and looking forward to Grok 5!"

GPT-5

OpenAI termed GPT-5 as the best AI system implemented so far.

"We are introducing GPT‑5, our best AI system yet. GPT‑5 is a significant leap in intelligence over all our previous models, featuring state-of-the-art performance across coding, math, writing, health, visual perception, and more," read the OpenAI website.

GPT‑5 is available to all users, with Plus subscribers getting more usage, and Pro subscribers getting access to GPT‑5 pro.

The website said: " GPT‑5 is a unified system with a smart, efficient model that answers most questions, a deeper reasoning model (GPT‑5 thinking) for harder problems, and a real‑time router that quickly decides which to use based on conversation type, complexity, tool needs, and your explicit intent (for example, if you say “think hard about this” in the prompt)."

"GPT‑5 is our strongest coding model to date. It shows particular improvements in complex front‑end generation and debugging larger repositories," it said.