Gemini managed agents switch to the antigravity harness

Google @GoogleOriginally posted 2026.09.18

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We're updating Gemini managed agents with a new harness. antigravity-preview-09-2026 brings @Antigravity tools and behavior to @GoogleAIStudio and the Interactions API. It runs natively on Gemini 3.8 Flash, our best reasoning & coding model yet, and you can change your model selection anytime. Plus, we’re introducing two new APIs to make building easier and more secure 🧵