Google announced Antigravity, an agent-first coding tool built for Gemini 3 Pro, on November 18, 2025. The tool supports third-party models including Claude Sonnet 4.5 and OpenAI’s GPT-OSS. It provides agents with direct access to code editors, terminals, and browsers. Antigravity enters free public preview for Windows, macOS, and Linux.
Antigravity accompanies the launch of Gemini 3 Pro. Google positions the tool for an “agent-first future.” It supports multiple agents operating simultaneously without constant human intervention. Agents access the code editor to write and edit files, the terminal to execute commands and run scripts, and the browser to interact with web applications and test interfaces.
A central feature is the reporting mechanism. Agents report work plans before starting tasks. As they execute work, Antigravity generates Artifacts. These include task lists outlining objectives, detailed plans specifying steps, screenshots capturing visual states of the workspace or application, and browser recordings documenting interactions within web pages. Artifacts verify completed actions and upcoming intentions. Antigravity also logs actions and external tool usage. Google states that Artifacts are “easier for users to verify” than lists of model actions and tool calls. Developers review these outputs to confirm agent behavior matches expectations.
Antigravity offers two interface views. The Editor view provides an Integrated Development Environment (IDE) experience similar to Cursor and GitHub Copilot. A single agent operates in a side panel alongside the main editing area for real-time assistance during interactive coding sessions. The Manager view enables oversight of multiple agents across various workspaces. Google describes this as “mission control for spawning, orchestrating, and observing multiple agents across multiple workspaces in parallel.” Agents handle tasks independently, with users directing high-level coordination.
Feedback occurs through comments on specific Artifacts. Agents incorporate these comments without pausing ongoing work, preserving workflow continuity while enabling refinements. Agents retain knowledge from previous sessions. They store code snippets for reuse in similar contexts and preserve detailed steps for recurring tasks. This supports progressive improvement as agents build on accumulated experience.
A demonstration video shows Antigravity building a basic flight tracker application. Agents construct the app’s components, conduct tests to ensure functionality, and generate a browser recording of test outcomes. The recording captures the app’s performance in a live browser environment, providing visual proof of execution.
The public preview is free with generous Gemini 3 Pro rate limits that refresh every five hours. Google notes that only “a very small fraction of power users” encounter these limits during typical operation.
