Google has updated its Gemini API managed agents with Gemini 3.6 Flash as the default model alongside new controls for security, spending, and automated execution.
The Antigravity preview agent now uses Gemini 3.6 Flash automatically, with no code changes required from developers already using the service.
Developers can also select another supported model through the agent configuration. Available options include Gemini 3.5 Flash and Gemini 3.5 Flash Lite, which Google positions as its lower cost and lower latency option.
Gemini 3.6 Flash is designed for coding, reasoning, multimodal analysis, and repeated tool use. Google says the model completes agentic workflows with fewer reasoning steps, tool calls, and debugging loops than Gemini 3.5 Flash.
Managed agents coordinate reasoning, code execution, package installation, file operations, and web retrieval through a single Gemini Interactions API call. Each agent operates inside an isolated cloud sandbox managed by Google.
