Google makes Interactions API the default interface for Gemini models and agents

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Google makes Interactions API the default interface for Gemini models and agents


Matthias Bastian[View the LinkedIn Profile of Matthias Bastian](https://www.linkedin.com/in/matthias-bastian-128b71b1/ "View the LinkedIn Profile of Matthias Bastian")

Jun 22, 2026

Google Deepmind has released the Interactions API as the default interface for Gemini models and agents. The API,in beta since December 2025, is now generally available and replaces the old generateContent interface inGoogle AI Studioand alldocumentation. The old API still works, but new agent features will only ship through the Interactions API going forward. "Interactions sets the stage for the new era of Agents," Google's developer relations leadLogan Kilpatrick writes. Google has published amigration guidefor the switch.

Recent additionsinclude Managed Agents with their own Linux sandbox, background execution for long-running tasks, tool chaining with Google Search and Maps, and media generation for images, music, and speech.

Google also simplified the schema since the beta. The old role structure with labels like "user" and "model" is now replaced by typedsteps, where every action from user input to function calls is its own defined step. Developers can choose betweenFlex and Priority mode. Flex cuts costs by 50 percent, while Priority optimizes for speed.

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Source:Google Blog

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