Google has opened Anthropic’s Claude Opus 5 to engineers companywide through its internal Antigravity development tool, with quota’d access that remains supplementary to Gemini as the primary stack, Business Insider reports.
Google has opened Anthropic’s Claude Opus 5 to engineers across the company through Antigravity, an internal version of its development platform, Business Insider reported, citing a Google spokesperson. Access is quota’d and framed as a supplement to Gemini, which remains the primary model stack for Google engineering work. Dataconomy carried a matching account of the companywide rollout.
Until now, Claude access at Google had been limited mainly to DeepMind and select high-priority projects, Business Insider said. The wider Antigravity offering expands who can call Claude Opus 5 inside day-to-day engineering workflows, without changing Google’s stated preference for Gemini as the default.
The move lands against a competitive coding-tools backdrop. Business Insider reported that some Google engineers have been frustrated with Gemini’s coding limits relative to Claude and OpenAI models — a staff-pressure pattern that is not unique to Google. Amazon earlier opened Claude and OpenAI’s Codex to staff after similar complaints, the report said.
Google is also an Anthropic investor, with plans reported for investment totaling up to $40 billion. That commercial relationship sits beside, rather than instead of, Google’s own Gemini line: the spokesperson confirmation to Business Insider describes quota’d third-party access inside Antigravity, not a replacement of the in-house primary stack.
This brief follows Business Insider’s account of the Antigravity rollout and the Google spokesperson confirmation. It does not treat Gemini as abandoned, and it does not frame Claude access as a verdict on model quality — only as a documented expansion of which tools Google engineers may use under quota.