Grok
xAI's frontier AI assistant with multi-agent architecture and real-time X/Twitter integration
Grok is xAI's AI assistant, now backed by SpaceX following the February 2026 acquisition. The latest Grok 4.20 Beta 2 uses a multi-agent architecture where four specialised components work together for improved instruction-following and reduced hallucinations. Grok offers real-time access to X/Twitter data, image generation via Grok Imagine (top-ranked on Artificial Analysis), and extremely competitive API pricing starting at $0.20/MTok. Context window extends to 2M tokens. Free tier available through X with limited requests.
Last updated: 2026-03-12 00:09:18
AI Models Powering Grok
2 models from 1 vendor
Grok 4
Primary Currentgrok-4 xAI's flagship reasoning model. 256K context. Frontier-tier performance matching o3 on benchmarks. Knowledge cutoff November 2024.
Grok 4.1 Fast
Currentgrok-4.1-fast 2M context window — largest available. Near-Grok 4 quality at 1/15th the price. Excellent for long documents and agentic workflows.
Model data sourced from official vendor documentation. View all models →
Recent Model Updates
Grok Pricing
Free (via X)
~10 requests per 2 hours
X Premium
Higher Grok limits with X Premium subscription
API (Grok 4 Fast)
$0.20/$0.50 per MTok input/output
Pricing verified as of research date. Contact vendor for current pricing.
Grok Features
Platform & Infrastructure
Grok Pros & Cons
Pros
- + Extremely competitive API pricing ($0.20/MTok)
- + 2M token context window
- + Real-time X/Twitter data access
- + Top-ranked image-to-video AI
- + Multi-agent architecture in Grok 4.20
Cons
- - Primarily accessible through X ecosystem
- - Newer platform with less established track record
- - Free tier requires X account
- - Enterprise features less mature than OpenAI/Anthropic
Grok Integrations
Company Info
- Company
- xAI (SpaceX)
- Founded
- 2023
- Headquarters
- San Francisco, CA
- Deployment
- Cloud
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