Gemini CLI vs Grok Build CLI

Feature	Gemini CLI	Grok Build CLI
Tagline	An open-source AI agent that brings Gemini into your terminal	Bring Grok into your terminal
Website	https://geminicli.com	https://x.ai/cli
Language	typescript	rust
Release Date	June 24, 2025	May 14, 2026
Last Updated	June 29, 2026	August 19, 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	Yes	No
IDE Integration	Antigravity, VS Code, JetBrains IDEs (ACP), Zed (ACP)	None - Terminal only
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	1M tokens	Model-dependent
Terminal Bench	#15 · 65.8% ±2.7 (Terminal-Bench 2.1) 1	#9 · 20.3% ±3.1 (Terminal-Bench 4.0) 2
AA Coding Agent Index	-	47% · Grok 4.6 (xhigh)
Supported Models	Gemini 3.5 Flash, Gemini 3.1 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	Free	Subscription
Free Tier	Yes	Yes
Price Range	Free (1,000 req/day)	$0 (3 Day Trial) / $30 monthly (SuperGrok) / $300 monthly (SuperGrok Heavy)
Source Code Availability	Open Source (Apache-2.0)	Open Source (EULA)
Source Code	https://github.com/google-gemini/gemini-cli	https://github.com/xai-org/grok-build
Development State	active	active

¹ Gemini CLI tested with Gemini 3 Pro on Terminal-Bench 2.1.

² Grok Build CLI tested with Grok 4.6 on Terminal-Bench 4.0.