Google Cloud brings OpenAI’s GPT-6 models to Model Garden and becomes the only hyperscaler with Gemini, Claude and GPT

On October 21, 2026, Google Cloud put OpenAI’s models — GPT-6 Astra, GPT-6.1 Sol and GPT-6 Luna — into its Model Garden, becoming the only hyperscaler offering Gemini, Claude and GPT on a single platform. For a CISO the story is not the catalog but the governance: these models are billed through Marketplace, stay inside your data perimeter and plug into VPC Service Controls.