Or rather — agy, the binary name for the new Antigravity CLI. Cunning move from Google. I like it.
At I/O 2026 (May 19) Google announced the Antigravity 2.0 platform, which includes the new CLI. Gemini CLI becomes a secondary product and moves to usage-based pricing. Versions: platform 2.0, CLI binary 1.0.2.
Install#
brew install --cask antigravity-cli
agy
What I liked after a quick spin#
It’s written in Go. The old Gemini CLI was Node-based; the new one is a single Go binary. Snappier startup, lower memory. There’s an opinion — not a Google claim — that Go is more supply-chain-resilient: no install-time scripts in the module system, and a rich standard library and community style that keep transitive dependency graphs small.
Modern conventions are first-class. MCP servers via /mcp and mcp_config.json. Skills via /skills. If you have already invested in those for Claude Code or another agent, the muscle memory carries over.
Generous free tier. A regular Google account works — no paid subscription required. Paid tiers (AI Pro, Ultra, Gemini Code Assist) raise the limits, but the free tier is enough to take it for a real spin.
Both Gemini and Opus are available. That surprised me — after a single Google auth, Claude Opus appeared as a model option. In my experience Gemini tends to be more stubborn and Opus more agreeable, so having both and switching by task is useful.
Side benefit: out of Claude Code tokens mid-task? Continue in agy.