Google Adds Managed Agents to Gemini API
Google has introduced Managed Agents to its Gemini API at I/O 2026, offering developers a complete, turnkey execution environment for AI agents that can be launched with a single API call. This move abstracts away complex infrastructure management, allowing teams to focus on agent behavior rather than backend systems.
Antigravity Agent Powered by Gemini 3.5 Flash Model
The core of the new offering is the Antigravity Agent, built on the newly announced Gemini 3.5 Flash model. It operates within a secure Linux sandbox hosted by Google, with default capabilities to execute code, perform Google searches, and read URLs. Developers can customize instructions, tools, and data, then save the configuration as a reusable managed agent for future deployments.
Free Infrastructure Preview with Token-Based Pricing
During the preview period, environmental computing resources (CPU, memory, and sandbox) are provided at no cost, with charges applied only for token consumption and tool usage. However, limitations remain: the preview does not support structured output, restricts input to text and images, and excludes certain tools such as file_search, computer_use, and google_maps. This abstracted approach eliminates the need for developers to manage sandboxes, file systems, or multi-process handling, enabling a sharper focus on product design and agent functionality.