AI Agent Arena

Grok by xAI vs ChatGPT 4o

Side-by-side comparison · Updated August 2026

Grok by xAI

Grok by xAI

Real-time AI assistant with X/Twitter integration

4.3
Freemium Visit Website
ChatGPT 4o

ChatGPT 4o

OpenAI's flagship multimodal AI model

4.8
Freemium Visit Website

Detailed Comparison

Bolder value = winner in that category

Grok by xAI
ChatGPT 4o
4.3
Rating
4.8
0 reviews
Reviews
0 reviews
Freemium
Pricing
Freemium
$16/mo
Starting Price
$20/mo
Yes
Free Tier
Yes
AI Assistants
Category
AI Assistants
Not listed
Affiliate Program
Not listed
xAIElon MuskReal-timeX Twitter
Tags
OpenAIGPT-4oMultimodalPopular

Grok by xAIKey Features

  • Real-time X data access
  • Code generation
  • Image understanding
  • Fewer restrictions
  • Aurora image generation

ChatGPT 4oKey Features

  • Image understanding
  • Voice mode
  • DALL-E 3 integration
  • Code interpreter
  • Custom GPTs

Quick Verdict

ChatGPT 4o wins — higher rating
Grok by xAI wins — lower price
Grok by xAI
Grok by xAI
View full profile →
ChatGPT 4o
ChatGPT 4o
View full profile →

Related Comparisons

Grok by xAI vs Perplexity AIGrok by xAI vs Perplexity AIGrok by xAI vs Claude by AnthropicGrok by xAI vs ClaudeGrok by xAI vs Claude APIGrok by xAI vs ChatGPTChatGPT 4o vs Perplexity AIChatGPT 4o vs Perplexity AIChatGPT 4o vs Claude by AnthropicChatGPT 4o vs ClaudeChatGPT 4o vs Claude APIChatGPT 4o vs ChatGPT