Letta Code vs Plandex

Feature	Letta Code	Plandex

Tagline	The memory-first coding agent	Open source AI coding agent for large projects and real world tasks
Website	https://letta.com	https://github.com/plandex-ai/plandex
Language	typescript	go
Release Date	December 16, 2025	March 14, 2024
Last Updated	August 19, 2026	August 19, 2026
Provider Type	Independent	Independent
MCP Support	Yes	No
Multi-Agent Support	Yes	No
Git Integration	basic	deep
Multi-File Editing	Yes	No
Auto Test Running	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	No
Voice Mode	No	No
IDE Integration	None - Terminal only	None - Terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	No
Local Model Support	Yes	Yes
Context Window	Model-dependent	2M tokens effective
Terminal Bench	#44 · 59.1% ±2.4 (Terminal-Bench 2.0) ¹
Supported Models	Multi-provider with Claude, GPT, Gemini and self-hosted (BYOK).	Any OpenAI-compatible models and 400+ models from OpenRouter.
Supported Subscriptions	ChatGPT GitHub Copilot Claude Code OpenCode Go / Zen	—
Pricing Model	Freemium	Free
Free Tier	Yes	Yes
Price Range	Free (BYOK) / $20-200/mo	Free (self-hosted)
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	c	https://github.com/plandex-ai/plandex
Development State	active	inactive