Two of the fiercest rivals in artificial intelligence are now doing business together. OpenAI announced Wednesday that its frontier AI models and Codex agentic workflows will be available through Google Cloud's Model Garden, giving enterprise customers native access inside the cloud environment where they already work.

"Google Cloud's longstanding investment in machine learning and AI has made it a destination for AI workloads and the developers and data scientists building them," OpenAI said. "Bringing OpenAI models to its model garden gives these teams access to OpenAI's frontier models within the environment where they already work, enabling enterprises to modernise their software development lifecycle, build agentic workflows, and change how people work."

Google Cloud customers will be able to buy the OpenAI models through Model Garden, with availability in Google Antigravity and the Gemini Agent to follow, the companies said. Google Cloud chief executive Thomas Kurian has previously described his platform as an open one that welcomes any model popular with developers, Reuters reported.

The deal reflects a broader industry shift: hyperscale cloud companies are becoming the chief commercial channels for frontier AI labs, taking a percentage of sales made through their platforms. For customers, it means model choice increasingly happens inside a cloud console rather than through direct contracts with each lab.

It also underlines how completely the AI race has scrambled old alliances. Google, whose Gemini models compete directly with OpenAI's, now profits when its cloud customers choose the rival's models — a arrangement that would have been unthinkable in the software wars of a decade ago.