Antigravity CLI vs. Ralph TUI

Feature	Antigravity CLI	Ralph TUI

Tagline	Google's coding agent for the terminal, and the replacement for Gemini CLI	AI agent loop orchestrator for terminal
Website	https://antigravity.google/product/antigravity-cli	https://ralph-tui.com
Language	go	typescript
Release Date	May 19, 2026	January 14, 2026
Last Updated	May 20, 2026	April 28, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	deep integration with git worktrees
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Antigravity IDE	None - terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model dependent	Depends on underlying agent
Supported Models	Gemini 3.5 Pro/Flash, Gemini 3.1 Pro, Gemini 3 Flash, Claude Sonnet / Opus 4.7, GPT-OSS-120b	Orchestrates Coding Agents: Claude Code, OpenCode, Gemini CLI, Codex, Kiro, Droid, Cursor CLI.
Pricing Model	Freemium	BYOK
Free Tier	Yes	Yes
Price Range	$0 - $200	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (MIT)
Source Code	N/A	https://github.com/subsy/ralph-tui
Development State	active	active