Overview
Grok is the conversational AI from xAI (Elon Musk's AI company), deeply integrated with the X platform (formerly Twitter). It specializes in real-time knowledge thanks to direct X feed access, plus DeepSearch, image generation (Imagine), and video generation. As of 2026, the flagship is Grok 4, with Grok 4 Heavy — a multi-agent system — available on the Heavy plan.
Latest / Key Features
Grok 4 / Grok 4 Heavy
Grok 4 brings real-time search, tool use, and a 128K context window. Grok 4 Heavy is a multi-agent system that parallelizes tasks across specialist agents, scoring 50.7% on Humanity's Last Exam and 100% on AIME 2025.
Big Brain Mode
Allocates extra compute for complex multi-step reasoning — math, deep analysis, and structured problem solving.
Four Operating Modes
- Auto — picks the best approach automatically
- Fast — speed-optimized brief answers
- Expert — long-form, high-quality work output
- Heavy — exclusive to SuperGrok Heavy; multi-agent parallel execution
Grok Imagine (Images & Video)
The Imagine image model gained a Grok Imagine Video companion in 2026, producing 10-second clips. Available on Plus / SuperGrok.
X Platform Integration
Grok pulls live data from X timelines and trends, giving it the freshest take on currently trending topics.
New SuperGrok Lite Tier
In March 2026, xAI introduced SuperGrok Lite ($10/mo) with unlimited Grok 3.5 access, lowering the entry price significantly.
Plans & Pricing
| Plan | Monthly | Highlights |
|---|---|---|
| Free | $0 | Limited use, base model |
| SuperGrok Lite | $10 | Unlimited Grok 3.5, limited image generation |
| SuperGrok | $30 | Grok 4, DeepSearch, unlimited image gen, Expert mode |
| SuperGrok Heavy | $300 | Grok 4 Heavy multi-agent, top priority access |
| X Premium+ | $40 | Includes X platform benefits + Grok |
Common Use Cases
- Real-time information: Follow X trends and breaking news
- Research: DeepSearch investigations
- Image generation: Imagine visuals
- Video generation: 10-second Grok Imagine Video clips
- Hard problems: Heavy mode multi-agent solving
Strengths
- ✅ Real-time X integration — fastest on trending topics
- ✅ Heavy multi-agent mode — strong on hard problems
- ✅ Unified image and video generation
- ✅ Looser content policies — answers topics other AIs refuse
- ✅ New Lite tier makes entry cheap
Weaknesses
- ❌ SuperGrok Heavy at $300/mo is an outlier in price
- ❌ Answer quality can be inconsistent vs Claude/GPT
- ❌ Many flows assume you have an X account
- ❌ Fewer enterprise / compliance deployments
- ❌ Small plugin and extension ecosystem
Official Links
- Website: https://grok.com
- xAI: https://x.ai
- Plans: https://grok.com/plans