Letta Code vs Ralph TUI

Feature	Letta Code	Ralph TUI

Tagline	The memory-first coding agent	AI agent loop orchestrator for terminal
Website	https://letta.com	https://ralph-tui.com
Language	typescript	typescript
Release Date	December 16, 2025	January 14, 2026
Last Updated	August 19, 2026	August 19, 2026
Provider Type	Independent	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	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	None - Terminal only	None - Terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Depends on underlying agent
Terminal Bench	#44 · 59.1% ±2.4 (Terminal-Bench 2.0) ¹
Supported Models	Multi-provider with Claude, GPT, Gemini and self-hosted (BYOK).	Orchestrates Coding Agents: Claude Code, OpenCode, Gemini CLI, Codex, Kiro, Droid, Cursor CLI.
Supported Subscriptions	ChatGPT GitHub Copilot Claude Code OpenCode Go / Zen	—
Pricing Model	Freemium	BYOK
Free Tier	Yes	Yes
Price Range	Free (BYOK) / $20-200/mo	Free (BYOK)
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	c	https://github.com/subsy/ralph-tui
Development State	active	active