OpenAI models on Google Cloud: one invoice, keep routing portable

OpenAI models are now on Google Cloud. On October 21, Google put GPT-6 Astra, GPT-6.1 Sol and GPT-6 Luna into Model Garden as a private preview for select enterprise customers, billed through Google Cloud Marketplace. Google says that makes it the only hyperscale cloud selling Gemini, Claude and GPT side by side. For a business that already pays Google for compute, the interesting part isn't the models. It's the invoice.

What actually happened

Google's announcement and OpenAI's companion post lay out the terms:

• Three models in private preview. Astra for heavy coding, computer use and research. Sol for near-Astra work at lower cost. Luna for fast, high-volume everyday tasks. Access starts with an interest form. OpenAI says general availability is planned in the coming weeks.
• Billing through Marketplace. Usage lands on your single Google Cloud invoice, draws down existing cloud commitments, and counts toward Flexible Savings Plans across model providers. No separate OpenAI contract.
• Codex now, more later. Developers can point local Codex CLI and Desktop workflows at Google's platform for inference today. Google Antigravity and Gemini for business support are listed as "coming soon."
• Data terms. Prompts and outputs stay inside your data perimeter and are not used for training. Zero Data Retention and Confidential Compute are both marked "coming soon," not live.
• No public per-token prices on Google's page.

Why OpenAI on Google Cloud matters for your business

Committed spend just got more flexible. If you signed a GCP commit and you're under it, GPT usage can now burn it down. That's real money for a shop that was paying OpenAI directly on a card while Google credits sat idle.

Don't trade one lock-in for another. Moving every call into Vertex because the bill is convenient makes Google your switching cost. Keep model selection behind your own routing layer: one interface, provider and model as config. Then Google, Azure, AWS or OpenAI direct becomes a price comparison, not a migration.

Wait for ZDR if you handle sensitive data. Customer records, payment details, health notes: the zero-retention option isn't live yet. Check the terms on the day you move, not the press release.

Price it before you switch. With no public rates, compare your actual monthly token bill against what Google quotes you, including any commit discount.

Sources: Google Cloud blog, OpenAI.