One Terminal, Three Model Families
Switching between AI models usually means switching tabs, tools and API keys. Antigravity CLI — the command is agy — is Google's official successor to the Gemini CLI, and it puts Gemini, Claude and an open-weight GPT model in one terminal suite you can open right inside VS Code.
One Terminal, Every Model
Type agy and you're in a multi-model suite: Gemini 3.x (Flash and Pro), Claude Sonnet and Opus, and GPT-OSS. Switch between them with /model or the --model flag without leaving the shell. Subagents, planning and MCP support are built in.
Install in One Line
On macOS or Linux, paste Google's official install command, sign in with your Google account, then run agy in your terminal. There are no API keys to set up, and during the public preview it's free — so you can query top models without a per-token bill.
Read the Fine Print
- Free during preview, with quotas. Usage limits apply, and preview pricing won't necessarily last.
- "GPT" means GPT-OSS. It's OpenAI's open-weight model, not the paid GPT-5.
- It's a Google product. It needs a Google sign-in and ships as a closed-source binary.
What's in the Guide
Which models are available and how to switch between them, the official install command and sign-in, what "free during preview" covers, and a link to the official site.
The full field guide is in the PDF.
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