Grok Build CLI vs. OpenBlock

Feature	Grok Build CLI	OpenBlock

Tagline	Bring Grok into your terminal	A self-improving coding agent that handles the full dev lifecycle
Website	https://x.ai/cli	https://openblocklabs.com/
Language	rust	typescript
Release Date	May 14, 2026	March 16, 2026
Last Updated	July 15, 2026	June 28, 2026
Provider Type	AI Lab	Independent
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	None - Terminal only	None - Terminal onle
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model dependent	Model-dependent
Supported Models	SuperGrok Heavy, Grok 4.5, 4.20, Grok 4, Grok Build 0.1, custom models including OpenAI compatible models	400+ via OpenRouter (Claude, GPT, Gemini, Grok, open-source)
Supported Subscriptions	SuperGrok X Premium	—
Pricing Model	Subscription	Freemium
Free Tier	Yes	Yes
Price Range	$0 (3 Day Trial) / $30 monthly (SuperGrok) / $300 monthly (SuperGrok Heavy)	$10-100 (credit-based)
Source Code Availability	Open Source (EULA)	Proprietary Software
Source Code	https://github.com/xai-org/grok-build	N/A
Development State	active	active