GitHub Copilot CLI vs. zerostack

Feature	GitHub Copilot CLI	zerostack

Tagline	The power of GitHub Copilot in your terminal	Minimal Rust coding agent optimized for memory footprint
Website	https://github.com/features/copilot/cli	https://gi-dellav.github.io/zerostack/
Language	typescript	rust
Release Date	September 24, 2025	May 12, 2026
Last Updated	June 29, 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	No	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	Yes	No
IDE Integration	VS Code, Cursor, Windsurf, JetBrains, Neovim, Visual Studio, Xcode	Zed (via ACP), Neovim (via CodeCompanion.nvim + ACP)
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Auto-managed	Model-dependent; auto-compaction
Supported Models	Multi-provider (GitHub-managed) and local models	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Supported Subscriptions	GitHub Copilot	—
Pricing Model	Freemium, Usage Based	Free, BYOK
Free Tier	Yes	Yes
Price Range	Free / $10-39/mo	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (GPL-3.0)
Source Code	https://github.com/github/copilot-cli	https://github.com/gi-dellav/zerostack
Development State	active	active