Antigravity CLI vs. zerostack

Feature	Antigravity CLI	zerostack

Tagline	Google's coding agent for the terminal, and the replacement for Gemini CLI	Minimal Rust coding agent optimized for memory footprint
Website	https://antigravity.google/product/antigravity-cli	https://gi-dellav.github.io/zerostack/
Language	go	rust
Release Date	May 19, 2026	May 12, 2026
Last Updated	August 19, 2026	September 4, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	deep
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Antigravity IDE	Zed (via ACP), Neovim (via CodeCompanion.nvim + ACP)
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model-dependent	Model-dependent; auto-compaction
Supported Models	Gemini 3.5 Pro/Flash, Gemini 3.1 Pro, Gemini 3 Flash, Claude Sonnet / Opus 4.7, GPT-OSS-120b	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Pricing Model	Freemium, Subscription, Usage Based, BYOK	Free, BYOK
Free Tier	Yes	Yes
Price Range	$0 - $200	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (GPL-3.0)
Source Code	N/A	https://github.com/gi-dellav/zerostack
Development State	active	active