xAI Launches Grok 4 with Native Tools, Real-Time Search, and SuperGrok Heavy Tier
Grok 4 claims 'most intelligent' status with native tool use and real-time search integration.
xAI has officially launched Grok 4, positioning it as their most advanced AI model with native tool use and real-time search integration. This new model is available immediately to SuperGrok and X Premium+ subscribers, as well as through the xAI API. Alongside the standard Grok 4, xAI introduced a new SuperGrok Heavy tier, which grants access to Grok 4 Heavy — the most powerful version of the model designed for complex reasoning and multi-step agentic tasks.
Beyond the model itself, Grok 4 powers several new ecosystem features. A new coding agent called Grok Build (now in early beta) runs directly from the terminal for all SuperGrok and X Premium+ users. Additionally, xAI has rolled out Skills for web, iOS, and Android, enabling users to generate documents, decks, spreadsheets, and automate workflows. The company also launched Connectors — deep integrations with daily-use apps — and expanded voice capabilities with custom voice cloning and a voice library. These updates position Grok 4 as a competitive frontier model against GPT-5 and Claude 4, emphasizing agentic workflows and real-time data access.
- Grok 4 features native tool use and real-time search integration directly in the model, enabling agentic behavior.
- New SuperGrok Heavy tier offers access to Grok 4 Heavy, the most powerful version for complex reasoning tasks.
- Available to SuperGrok and X Premium+ subscribers; also powers Grok Build (terminal coding agent) and ecosystem tools like Skills and Connectors.
Why It Matters
Grok 4's native tool use and search integration bring advanced agentic capabilities, challenging OpenAI and Anthropic in the frontier model race.