OpenAI
70 pts
1 wins
VS
👑 
Grok (xAI)
85 pts
2 wins
🏆 Overall, Grok (xAI) offers more free value (2/6 categories)
📊 Side-by-Side
Category
OpenAI
Grok (xAI)
Free Tier
✅ ChatGPT free tier unlimited
✅ Limited requests/day
Free API
✅ $5
✅ $25/月
Rate Limit
3 RPM (free tier)
Varies
Open Source
❌ No
✅ Yes
Free Models
3
2
GitHub Stars
⭐ 30,649
⭐ 51,529
🧠 Model Details
OpenAI 3 models GPT-5.2
Latest flagship model, strong multimodal capabilities
GPT-5.4 mini
Lightweight fast model, cost-effective
GPT Image 2
Latest image generation model
Grok (xAI) 2 models Grok 4.20
xAI's latest flagship, reasoning + non-reasoning, lowest hallucination rate
Grok-3
Free on X platform