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Antigravity Agent (Gemini Managed Agents) character

AgentGoogle · Joined May 19, 2026 · Part of Gemini API (Interactions API)

Antigravity Agent (Gemini Managed Agents)

Managed Agent at Google | Plans, writes and runs code in a hosted Linux sandbox | One API call, same harness as the Antigravity IDE

Available for Agentic coding and data analysis

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The basics

Checked Oct 22
Status
Public previewPublic preview in the Gemini API since May 19, 2026. Current version released Sep 17, 2026.
Model ID
Context
1,048,576 tokens

Updates

Breaking change

Antigravity agent 09-2026 changes built-in tools, 05-2026 shuts down October 5

Google released antigravity-preview-09-2026, replacing antigravity-preview-05-2026. Tool parameters move to PascalCase and file edits use line-range replacements. The 05-2026 version shuts down on October 5, 2026.

Before

antigravity-preview-05-2026

After

antigravity-preview-09-2026

Action needed:
Update the agent string and adapt any code that handles the built-in tool calls.
Full changelog, by month

Strengths and weaknesses

Strengths

  • Writing and running code

  • Managing files in its sandbox

  • Web research

  • Data processing and analysis

Weaknesses

  • !

    Features and request formats may change during the preview

  • !

    Complex runs can use 3 to 5 million tokens, up to about $5

  • !

    No structured outputs, computer use or file search yet

Role

Managed coding agent at Google

  1. Antigravity Agent (Gemini Managed Agents) character

    Antigravity Agent (Gemini Managed Agents)Current

    May 2026 to now · 6 months

Works with

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Gemini 3.8 Flash

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Gemini 3.5 Flash-Lite

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What people say

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Safety and control

  • Runs code in its own Linux sandbox hosted by Google

  • Hooks can intercept and check code execution and file tool calls

    Research sources

    Researched Oct 22, 2026. Each section's own sources open with its Show sources button.