Kiro CLI vs Letta Code

Feature	Kiro CLI	Letta Code

Tagline	AI coding agent by Amazon	The memory-first coding agent
Website	https://kiro.dev/cli	https://letta.com
Language	rust	typescript
Release Date	November 17, 2025	December 16, 2025
Last Updated	April 28, 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	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration		None - Terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Not disclosed	Model-dependent
Terminal Bench		#44 · 59.1% ±2.4 (Terminal-Bench 2.0) ²
Supported Models	Frontier and open weight models with auto routing: Opus / Sonnet 4.6, MiniMax 2.5, DeepSeek 3.2, Qwen3.	Multi-provider with Claude, GPT, Gemini and self-hosted (BYOK).
Supported Subscriptions	—	ChatGPT GitHub Copilot Claude Code OpenCode Go / Zen
Pricing Model	Freemium	Freemium
Free Tier	Yes	Yes
Price Range	Free / $0-200/mo	Free (BYOK) / $20-200/mo
Source Code Availability	Proprietary Software	Open Source (Apache-2.0)
Source Code	N/A	c
Development State	active	active