Building Agentic Workflows With Google Antigravity

If you have used Copilot or a chat sidebar, the mental model is wrong here. Antigravity is not a smarter autocomplete. It is a fork of VS Code rebuilt around the idea that an agent should have its own workspace and the authority to act in it. You describe a goal at the level you would give a junior engineer, and the agent breaks it into subtasks, writes the code, runs the tests, and checks its own output before handing it back.

Google calls this an "agent-first" experience. In practice your role shifts from typing every function to reviewing what an agent produced and deciding whether to accept it. That shift is the whole point, and it is also where the risk lives, which is why a chunk of this guide is about guardrails rather than features.

The agent works across three surfaces at once: your editor (to read and write files), your terminal (to install dependencies and run builds), and a browser (to open Chrome and verify that the UI it just built actually works). That browser loop is the part that genuinely separates it from older assistants. The agent does not just claim the code compiles. It opens the page, clicks through it, and brings back screenshots as evidence.

Nothing here is exotic. The one item people skip is the isolated workspace, and that is exactly the one you should not skip given how much access these agents get.

Here is the end-to-end path from a fresh install to a verified agent run. Check each step off as you go. The progress bar persists in your browser, so you can close the tab and come back.

These are the capabilities that change how you actually work. The first three are why delegation is possible at all. The fourth, Artifacts, is what makes delegation reviewable instead of a leap of faith.

The term Google uses for the front end of this is "vibe coding," which is just shorthand for describing intent at a high level ("build a dashboard that responds smoothly") rather than spelling out every function signature. It works well for greenfield UI and scaffolding. It works less well when the requirement is precise and unforgiving, which is where you still want Editor View and a tight prompt.

Antigravity is optimized for Gemini 3 Pro, but it is model-flexible. You can switch the underlying model per agent, which matters more than it sounds: different models behave differently on long agentic chains, and being able to swap one in without leaving the IDE is a real advantage.

Practical default: start every project on Gemini 3 Pro because that is what the IDE is tuned around. Reach for Claude Opus 4.5 only when an agent keeps losing the thread on a complex, multi-file change, and benchmark before you commit. Switching models is cheap; rewriting a confused agent's output is not.

Antigravity is free for individual developers during the public preview. That is the headline and it is true today. What is changing is how usage gets metered once you push past casual use.

Two things to understand about how limits work. First, Google is moving from daily prompt caps to a "compute-used" model: a complex coding or video prompt consumes more than a simple text prompt, and your limit refreshes every five hours up to a weekly cap. Second, if you hit your cap on the biggest models, you get shifted to faster smaller models rather than cut off. Pro and Ultra subscribers can also buy pay-as-you-go top-up credits specifically for Antigravity to keep using their chosen model.

Once your first agent run is verified and your guardrails are set, the next move is to build a small library of reusable rules for the patterns you repeat: test generation, endpoint scaffolding, dependency upgrades. That is what turns Antigravity from a novelty into something that compounds. If you want the engine underneath, the same Gemini models are available directly through the API, which is where you go when you need agentic behavior outside the IDE.

Google, Gemini, Google Antigravity, Google AI Studio, and Vertex AI are trademarks of Google LLC. Claude is a trademark of Anthropic. This article is not affiliated with, sponsored by, or endorsed by Google LLC.