Cosine vs. Keen Code

Feature	Cosine	Keen Code

Tagline	Your coding agent in your terminal.	Terminal coding agent in Go with a deliberately lean tool set
Website	https://cosine.sh/cli	https://mochow13.github.io/keen-code/
Language	go	go
Release Date		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	No	No
IDE Integration	VS Code	None - terminal only
Hooks / Extensions	Yes	No
Web Search	Yes	No
Local Model Support	No	Yes
Context Window	Model dependent	Model-dependent; auto-compaction
Supported Models	Lumen Scout, Lumen Outpost; GPT-5.5/5.4, Claude Opus 4.7/4.6, Claude Sonnet 4.6, Gemini 3.1 Pro, Gemini 3 Flash, Kimi K2.6, GLM 5.1, MiniMax M2.7, Qwen 3.6 Plus, DeepSeek v4 Pro	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	—	ChatGPT
Pricing Model	Usage Based, Freemium, Subscription	Free, BYOK
Free Tier	No	Yes
Price Range	$19-999/mo	Free (BYOK)
Source Code Availability	Proprietary Software	Open Source (MIT)
Source Code	N/A	https://github.com/mochow13/keen-code
Development State	active	active