Google opened Claude Opus 5 to every engineer, inside Antigravity, on a quota. Even the lab that builds Gemini dual-sources its coding model.
Business Insider reported late on September 14 that Google recently made Anthropic's Claude Opus 5 available to engineers across the company, but only through Antigravity, its internal development platform, and only on per-user quotas. Gemini stays primary. Claude Code and Codex stay barred. For a small shop, this is not a story about who is winning the coding race. It is a template for a vendor file: name a primary, name a specialist path, and write the quota and platform rules before client secrets wander into the second model.















