Cosine vs. Muse Code

Feature	Cosine	Muse Code

Tagline	Your coding agent in your terminal.	Meta's coding agent for the terminal and CI, built on Muse Spark
Website	https://cosine.sh/cli	https://developer.meta.com/ai/products/muse-code/
Language	go	rust
Release Date		August 5, 2026
Last Updated	September 4, 2026	September 4, 2026
Provider Type	AI Lab	AI Lab
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	deep
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	No
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	Yes
IDE Integration	VS Code	None - terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	No
Local Model Support	No	No
Context Window	Model dependent	1M tokens
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	Muse Spark 1.2, Muse Spark 1.1
Pricing Model	Usage Based, Freemium, Subscription	Usage Based
Free Tier	No	No
Price Range	$19-999/mo	Usage-based (from $0.10/M tokens)
Source Code Availability	Proprietary Software	Proprietary Software
Source Code	N/A	N/A
Development State	active	active