Android Studio now runs Claude, Codex and Antigravity. How to set up each agent

What changed on October 28

Google released Android Studio Rabbit 2 (2026.2.2) to the stable channel on October 28, 2026, the day it live-streamed Android Dev Summit, and with it Bring Your Own Agent. “Android Studio Rabbit 2 is now stable and ready for you to use in production,” its announcement says. Until then, outside agents ran only in the Canary builds, where Google previewed them in September.

“You can choose from over 40 coding agents,” Google writes, “including Claude Agent, Codex from OpenAI, Junie, and Google Antigravity.” They connect through the Agent Client Protocol, an open standard for plugging agents into editors, and Android Studio hands each one its tools: in Google’s roundup, “a deep understanding of your project structure and build, symbol resolution, Compose Preview rendering, the Emulator, Logcat, and more.” Agents also get Android’s official skills, and Google says they “automatically load project skills, slash commands, and memory.”

The same release adds Change Review, which reviews an agent’s changes or your pending commits and can walk you through them, also from a /review command in the agent window.

How to set up an agent

1. Update Android Studio. Choose Help > Check for updates (Android Studio > Check for updates on a Mac), or download Rabbit 2 from Google. The release notes still tell you to use “the latest canary release,” left over from the preview; Google’s announcement says the stable version has it.
2. Pick an agent. In the agent window, choose Claude Agent, Codex or Antigravity. For the others, open File > Settings > Tools > AI > Agents (Android Studio > Settings on a Mac) “to browse and install agents from the marketplace. You can install more than one and switch between them as you work.”
3. Sign in or add an API key. Use the agent maker’s account, or paste its API key, and send your first prompt. To switch, pick another agent; Google’s preview put it this way: “If one agent runs out of quota or isn’t meeting your performance expectations, you can have another agent take over.”
4. Decide what it may do alone. Google says permissions “let the agent act on its own for routine work, and pause for your approval on riskier actions.”

Google hasn’t published Android Studio’s full list. The public ACP registry also lists GitHub Copilot, Cursor, OpenCode, Grok Build and Gemini CLI, among others.

Which plan each agent uses

Android Studio’s built-in agent “remains available at no extra charge,” say the release notes. The others run on their makers’ accounts: “Both enterprise and consumer AI plans are supported - subject to the agent provider,” Google says, so each maker’s rules apply.

Agent	Made by	Google says you sign in with	What its maker allows
Antigravity	Google	A Google account, Google AI Pro or Ultra, Gemini Enterprise, or a Gemini API key	Gemini 3.8 Flash on every plan; Gemini 4 Argon on paid Pro, Ultra and Enterprise
Codex	OpenAI	Your plan or an API key	The CLI and IDE extension on Plus and above; Free and Go get the desktop app only
Claude Agent	Anthropic	Your plan or an API key	No claude.ai login in other companies’ products “unless previously approved”

Claude is the open question. Claude Agent is built on Anthropic’s Agent SDK, whose docs say: “Unless previously approved, Anthropic does not allow third party developers to offer claude.ai login or rate limits for their products, including agents built on the Claude Agent SDK.” Neither Google nor Anthropic has said whether Android Studio has that approval. Claude Code itself is included in all paid Claude plans; in Android Studio, count on an API key, billed per token, unless a Claude sign-in works for you.

Antigravity offers Claude Sonnet 5.5 and Opus 5.5 on paid Google AI Pro, Ultra and Enterprise in its own app, CLI and IDE, by its models page. Google hasn’t said whether its agent in Android Studio offers them too.

Which agent does best on Android work

Google’s Android Bench 2.0 gives each model 30 long Android tasks, such as moving screens in Signal from XML views to Compose or adding video playback to a news app, and checks whether the result works. Its results as of October 26:

Model, in its maker’s agent	Tasks passed	Expected range	Cost per run	Time for all 30
Claude Sonnet 5.5 (max), Claude Code	40.0%	24.0–56.0%	$1,574.90	70.7 h
Claude Opus 5.5 (max), Claude Code	37.3%	22.0–52.0%	$1,150.30	56.6 h
GPT-6.1 Sol (max), Codex	29.3%	15.3–42.7%	$99.50	26.6 h
GPT-6 Astra (high), Codex	28.0%	13.3–42.0%	$375.70	7.9 h
Claude Fable 5.1 (high), Claude Code	22.7%	10.7–36.0%	$492.60	22.2 h
Gemini 4 Argon (high), Antigravity	21.3%	10.0–33.3%	$267.60	52.8 h
Gemini 3.8 Flash (default), Antigravity	8.0%	3.3–13.3%	$34.50	12.1 h

The two Claude 5.5 models lead, but their ranges overlap with Codex’s, so the order at the top isn’t settled. GPT-6.1 Sol passed 29.3% for about a sixteenth of Sonnet’s cost. These runs used each lab’s own agent, not Android Studio.

Without Android Studio: the Android CLI plugin

If you work in a terminal, Google’s Android CLI plugin gives Claude Code and Codex the android-cli skill, so they can “create projects, manage virtual devices, inspect live UI layouts, run Journeys, and search the official Android Knowledge Base.” For Claude Code, from your terminal:

claude plugin marketplace add android/android-cli-plugin
claude plugin install android-cli@android-cli-plugin

Inside a Claude Code session, the same two commands start with /plugin. For Codex:

codex plugin marketplace add android/android-cli-plugin
codex plugin add android-cli@android-cli-plugin

The plugin “does not contain Android CLI itself,” its repository says, so download Android CLI first and run android update. Android CLI’s new android preview command renders Compose Previews without an emulator, and in Google’s internal testing agents that used it finished UI tasks “77% faster while using up to 3x fewer tokens.”

Enjoy runs Claude Code, Codex and Antigravity side by side outside the IDE, each on the plan you already have, and lets you hand a conversation from one to another, the same takeover Google describes. It doesn’t add Android Studio’s emulator or build tools. Enjoy is a monthly subscription, with the first seven days free (pricing).