Cosine vs. zerostack

Feature	Cosine	zerostack

Tagline	Your coding agent in your terminal.	Minimal Rust coding agent optimized for memory footprint
Website	https://cosine.sh/cli	https://gi-dellav.github.io/zerostack/
Language	go	rust
Release Date		May 12, 2026
Last Updated	September 4, 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	VS Code	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	Lumen Scout, Lumen Outpost; GPT-5.5/5.4, Claude Opus 4.7/4.6, Claude Sonnet 4.6, Gemini 3.1 Pro, Gemini 3 Flash, Kimi K2.6, GLM 5.1, MiniMax M2.7, Qwen 3.6 Plus, DeepSeek v4 Pro	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Pricing Model	Usage Based, Freemium, Subscription	Free, BYOK
Free Tier	No	Yes
Price Range	$19-999/mo	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