Devin for Terminal vs Letta Code

Feature	Devin for Terminal	Letta Code
Tagline	A local coding agent that runs directly in your terminal from Cognition AI	The memory-first coding agent
Website	https://devin.ai/terminal	https://letta.com
Language	rust	typescript
Release Date	April 9, 2026	December 16, 2025
Last Updated	September 27, 2026	August 19, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	basic
Multi-File Editing	Yes	Yes
Auto Test Running	No	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	Windsurf IDE	None - Terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model-dependent	Model-dependent
Terminal Bench	#8 · 18.6% ±3.0 (Terminal-Bench 3.0) 1	#44 · 59.1% ±2.4 (Terminal-Bench 2.0) 2
AA Coding Agent Index	62% · Fable 5.1 XHigh + SWE-2 Medium	-
Supported Models	Cognition (SWE-2), Anthropic (Fable, Opus, Sonnet, Haiku), OpenAI (GPT, GPT-mini, GPT-Codex), Google (Gemini), Kimi (Kimi K3), GLM (GLM 5)	Multi-provider with Claude, GPT, Gemini and self-hosted (BYOK).
Supported Subscriptions	-	ChatGPT GitHub Copilot Claude Code OpenCode Go / Zen
Pricing Model	Subscription, Usage Based	Freemium
Free Tier	Yes	Yes
Price Range	$0, $20 - $200 per month	Free (BYOK) / $20-200/mo
Source Code Availability	Proprietary Software	Open Source (Apache-2.0)
Source Code	N/A	c
Development State	active	active

¹ Devin for Terminal tested with SWE-1.7 Lightning on Terminal-Bench 3.0.

² Letta Code tested with Claude Opus 4.5 on Terminal-Bench 2.0.