Cosine vs Grok Build CLI

Feature	Cosine	Grok Build CLI

Tagline	Your coding agent in your terminal.	SpaceXAI's coding agent harness and TUI
Website	https://cosine.sh/cli	https://x.ai/cli
Language	go	rust
Release Date		May 14, 2026
Last Updated	September 4, 2026	October 18, 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	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	No
IDE Integration	VS Code	None - Terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model dependent	Model-dependent
Terminal Bench		#9 · 20.3% ±3.1 (Terminal-Bench 4.0) ²
AA Coding Agent Index	-	47% · Grok 4.6 (xhigh)
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	SuperGrok Heavy, Grok 4.5, 4.20, Grok 4, Grok Build 0.1, custom models including OpenAI compatible models
Supported Subscriptions	-	SuperGrok X Premium
Pricing Model	Usage Based, Freemium, Subscription	Subscription
Free Tier	No	Yes
Price Range	$19-999/mo	$0 (3 Day Trial) / $30 monthly (SuperGrok) / $300 monthly (SuperGrok Heavy)
Source Code Availability	Proprietary Software	Open Source (EULA)
Source Code	N/A	https://github.com/xai-org/grok-build
Development State	active	active