June 27, 2025 — xAI has officially announced the release of Grok 4, the latest iteration of its groundbreaking AI designed to accelerate human discovery and deepen our understanding of the universe. Building on the success of its predecessors, Grok 4 promises enhanced capabilities, improved reasoning, and a more intuitive user experience, positioning it as a pivotal tool for researchers, creators, and curious minds worldwide.
What’s New with Grok 4?
Grok 4 introduces several advancements that set it apart from earlier models:
- Enhanced Reasoning Abilities: Grok 4 leverages cutting-edge algorithms to provide more accurate and contextually relevant responses, making it adept at tackling complex queries across diverse domains, from scientific research to creative problem-solving.
- Improved Multimodal Processing: The new model seamlessly integrates text, images, and other data types, enabling users to interact with Grok 4 in more dynamic ways, such as analyzing visual content or generating detailed reports from mixed inputs.
- Faster Response Times: Optimized for efficiency, Grok 4 delivers near-instantaneous answers, ensuring a smoother and more productive user experience, even for computationally intensive tasks.
- Expanded Accessibility: xAI has made Grok 4 available across multiple platforms, including grok.com, x.com, and mobile apps for iOS and Android, with free access subject to usage quotas. Subscribed users on x.com and SuperGrok subscribers on grok.com will enjoy higher quotas for more extensive interactions.
Availability and Features
Grok 4 is accessible immediately on the following platforms:
- grok.com: Free access with the option to upgrade to SuperGrok for enhanced usage limits.
- x.com: Available to all users, with premium subscribers receiving increased quotas.
- Mobile Apps: Grok 4 is integrated into the Grok iOS and Android apps, as well as the X iOS and Android apps, complete with a voice mode for hands-free interaction.
Additionally, Grok 4 includes specialized modes to cater to different user needs:
- Think Mode: Activated via a dedicated button in the UI, this mode allows Grok 4 to deliberate longer for more thoughtful and nuanced responses.
- DeepSearch Mode: Also UI-activated, this feature enables iterative web searches for real-time, data-driven answers.
For developers, xAI has announced that Grok 4 will be available through its API service. Interested parties can explore integration options at x.ai/api.
A Note on BigBrain Mode
While rumors have circulated about a “BigBrain Mode,” xAI has clarified that this feature is not part of Grok 4’s public release. It remains exclusive and unavailable in the free plan, SuperGrok subscription, or x.com premium tiers.
