Claude Code vs Keen Code

Feature	Claude Code	Keen Code

Tagline	An agentic coding tool that lives in your terminal	Terminal coding agent in Go with a deliberately lean tool set
Website	https://claude.ai/code	https://mochow13.github.io/keen-code/
Language	typescript	go
Release Date	February 22, 2025	February 16, 2026
Last Updated	September 4, 2026	September 4, 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	No
Voice Mode	Yes	No
IDE Integration	VS Code, JetBrains	None - terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	No
Local Model Support	Yes	Yes
Context Window	1M tokens	Model-dependent; auto-compaction
Terminal Bench	#2 · 57.9% ±3.8 (Terminal-Bench 4.0) ¹
AA Coding Agent Index	62% · Fable 5.1 (max, with fallback)	-
Supported Models	Claude Fable 5 / Mythos 5 (Restricted Availability), Opus 4.8, Claude Sonnet 4.6, Claude Haiku 4.5	Anthropic, OpenAI, Codex via ChatGPT OAuth, Google AI, Moonshot Kimi, Z.ai GLM, DeepSeek, MiniMax, Amazon Bedrock, OpenCode Go, plus any OpenAI-compatible endpoint
Supported Subscriptions	Claude Code	ChatGPT
Pricing Model	Subscription	Free, BYOK
Free Tier	No	Yes
Price Range	$17-200/mo	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (MIT)
Source Code	https://github.com/anthropics/claude-code	https://github.com/mochow13/keen-code
Development State	active	active