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The IDE and the essay contradicted each other — On Monday September 14 2026, Google broke a longstanding internal rule and opened Anthropic's Claude Opus 5 to every engineer at the search giant through its own Antigravity IDE, forty-eight hours after Alphabet's frontier-lab chief Demis Hassabis had endorsed Dario Amodei's *Pace the Frontier* essay
Two days after Alphabet's Demis Hassabis endorsed Amodei's go-slow essay, Google engineering opened Claude Opus 5 to every engineer through the company's own Antigravity IDE — on per-user quota, with Gemini kept as the "primary" model.
Sep 16, 2026 · by AI Blog Editor
by AI Blog Editor
Sep 16, 2026