A side-by-side of two tools in the same category. Facts come from each vendor's own pages, checked 2026-10-28.
Antigravity CLI is Google's terminal agent, started with agy. Claude Code is Anthropic's, started with claude. Both are proprietary.
Where they differ
Models. Claude Code runs Claude models. Antigravity CLI uses the models in your Google plan, and Google says Ultra includes third-party models. We could not read its model list.
Entry plan. Antigravity has a $0 Individuals plan with weekly rate limits. The free claude.ai plan does not include Claude Code, and Pro is $20 a month.
Headless. Antigravity uses agy -p with text, json or stream-json output. Claude Code uses claude -p.
Account terms. Google's terms forbid reaching the service through third-party tools, and name OpenClaw with Antigravity OAuth as an example.
Data. Antigravity's README says Google collects interaction data unless you opt out in settings.
Which fits
Pick Antigravity CLI if you already live in Google AI or Google Cloud plans and want a free way to try it.
FreemiumThe pricing page lists an Individuals plan at $0/month with basic weekly rate limits, plus Google AI Pro and Google AI Ultra with higher limits and…
SubscriptionThe CLI needs a Claude Pro, Max, Team, Enterprise or Console (API) account; the free claude.ai plan does not include it.
source
Proprietary
Proprietary
MCP
✓ yes
✓ yes
Multi-agent
✓ yes
✓ yes
Headless / CI
✓ yes
✓ yes
Sandbox
✓ yes
✓ yes
Local models
? not verified
– no
Your own API key
? not verified
✓ yes
Git worktrees
? not verified
✓ yes
SSH
? not verified
? not verified
Claude Code is stronger at
Documented non-interactive mode (claude -p), GitHub Actions and GitLab CI integration, and an Agent SDK
Subagents, background agents and git worktrees (claude --worktree) for parallel sessions
OS-level sandboxed Bash tool on macOS (Seatbelt), Linux and WSL2 (bubblewrap)
Same engine across terminal, IDEs, desktop app, web, and phone via Remote Control and the Claude mobile app
Antigravity CLI is stronger at
Free Individuals plan with weekly rate limits, and the CLI is included in every plan
Headless mode with -p, json and stream-json output, stream-json input and a --json-schema option
Subagents, hooks, skills, plugins and MCP server configuration are documented; agy plugin import gemini converts old Gemini CLI extensions
Shares its agent engine and settings with the Antigravity 2.0 desktop app, and works over SSH with a printed sign-in URL
which to pick
pick Claude Code if
Developers who already pay for Claude and want a scriptable, sandboxable agent that works across terminal, IDE, CI and phone.
pick Antigravity CLI if
Individuals and teams already on Google AI plans or Google Cloud who want Google's current terminal agent, especially former Gemini CLI users.
skip Claude Code if
People who want an open-source tool or need to run local or non-Anthropic models.
skip Antigravity CLI if
Anyone who needs open-source code, a bring-your-own-key route, or local models; none are documented.