Letta Code vs Prime Agent

Feature	Letta Code	Prime Agent

Tagline	The memory-first coding agent	Model-agnostic terminal coding agent built on a persistent IPython runtime
Website	https://letta.com	https://www.primeintellect.ai/blog/prime-agent
Language	typescript	rust
Release Date	December 16, 2025	May 8, 2026
Last Updated	August 19, 2026	October 10, 2026
Provider Type	Independent	AI Lab
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	basic	basic
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	No
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	None - Terminal only	Zed, VS Code (via ACP)
Hooks / Extensions	Yes	Yes
Web Search	Yes	No
Local Model Support	Yes	Yes
Context Window	Model-dependent	Model-dependent
Terminal Bench	#44 · 59.1% ±2.4 (Terminal-Bench 2.0) ¹
Supported Models	Multi-provider with Claude, GPT, Gemini and self-hosted (BYOK).	20+ providers: Claude, GPT, Gemini, Mistral, Groq, Cerebras, xAI, DeepSeek, MiniMax, Xiaomi MiMo, Bedrock, Ollama, vLLM, LM Studio
Supported Subscriptions	ChatGPT GitHub Copilot Claude Code OpenCode Go / Zen	ChatGPT Claude Code GitHub Copilot
Pricing Model	Freemium	Free, Subscription, 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/PrimeIntellect-ai/prime-agent
Development State	active	active