Google makes Interactions API the default way to build with Gemini agents

Google makes Interactions API the default way to build with Gemini agents

Google has moved its Interactions API to general availability and says it is now the primary API for working with Gemini models and agents.

This matters now because Google is not just adding another endpoint. It is telling developers that the agent-shaped API is the default path for new Gemini work, while the older generateContent API remains supported but may not get every frontier agent capability first.

What Google announced

Google says the Interactions API is now generally available after a public beta that began in December 2025. The GA release brings a stable schema and makes Interactions API the default across Google AI Studio, the Gemini API documentation, and new code snippets.