Prime Agent vs. Ralph TUI

Feature	Prime Agent	Ralph TUI

Tagline	Model-agnostic terminal coding agent built on a persistent IPython runtime	AI agent loop orchestrator for terminal
Website	https://www.primeintellect.ai/blog/prime-agent	https://ralph-tui.com
Language	typescript	typescript
Release Date	May 8, 2026	January 14, 2026
Last Updated	September 4, 2026	August 19, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	basic	deep integration with git worktrees
Multi-File Editing	Yes	Yes
Auto Test Running	No	No
Sandbox / Permissions	No	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Zed, VS Code (via ACP)	None - Terminal only
Hooks / Extensions	Yes	No
Web Search	No	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Depends on underlying agent
Supported Models	20+ providers: Claude, GPT, Gemini, Mistral, Groq, Cerebras, xAI, DeepSeek, MiniMax, Xiaomi MiMo, Bedrock, Ollama, vLLM, LM Studio	Orchestrates Coding Agents: Claude Code, OpenCode, Gemini CLI, Codex, Kiro, Droid, Cursor CLI.
Supported Subscriptions	ChatGPT Claude Code GitHub Copilot	—
Pricing Model	Free, Subscription, BYOK	BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK)	Free (BYOK)
Source Code Availability	Open Source (MIT)	Open Source (MIT)
Source Code	https://github.com/PrimeIntellect-ai/prime-agent	https://github.com/subsy/ralph-tui
Development State	active	active