Prime Agent vs. zerostack

Feature	Prime Agent	zerostack

Tagline	Model-agnostic terminal coding agent built on a persistent IPython runtime	Minimal Rust coding agent optimized for memory footprint
Website	https://www.primeintellect.ai/blog/prime-agent	https://gi-dellav.github.io/zerostack/
Language	typescript	rust
Release Date	May 8, 2026	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	basic	deep
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	No	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Zed, VS Code (via ACP)	Zed (via ACP), Neovim (via CodeCompanion.nvim + ACP)
Hooks / Extensions	Yes	Yes
Web Search	No	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Model-dependent; auto-compaction
Supported Models	20+ providers: Claude, GPT, Gemini, Mistral, Groq, Cerebras, xAI, DeepSeek, MiniMax, Xiaomi MiMo, Bedrock, Ollama, vLLM, LM Studio	OpenRouter (default), OpenAI, Anthropic, Gemini, Ollama, plus unlimited custom OpenAI-compatible endpoints (vLLM, LiteLLM, enterprise gateways)
Supported Subscriptions	ChatGPT Claude Code GitHub Copilot	—
Pricing Model	Free, Subscription, BYOK	Free, BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (BYOK)
Source Code Availability	Open Source (MIT)	Open Source (GPL-3.0)
Source Code	https://github.com/PrimeIntellect-ai/prime-agent	https://github.com/gi-dellav/zerostack
Development State	active	active