Google Opens Claude Opus 5 to All Engineers on September 15, Internally Acknowledges Gemini's Coding Capabilities Are Insufficient
On September 15, 2026, Google gave all engineers quota access to Anthropic Claude Opus 5 through its internal Antigravity platform while officially keeping Gemini as its primary internal foundation model and acknowledging its weaker performance on complex coding tasks. The move marks the first time the world's largest AI vendor has systematically let its own engineers use a competitor's model.