Perplexity AI
40 pts
0 wins
VS
👑 
Grok (xAI)
85 pts
3 wins
🏆 Overall, Grok (xAI) offers more free value (3/6 categories)
📊 Side-by-Side
Category
Perplexity AI
Grok (xAI)
Free Tier
✅ No limit (basic search)
✅ Limited requests/day
Free API
❌ None
✅ $25/月
Rate Limit
N/A
Varies
Open Source
❌ No
✅ Yes
Free Models
2
2
GitHub Stars
-
⭐ 51,529
🧠 Model Details
Perplexity AI 2 models Perplexity Default
AI search engine, real-time web access
Pro Search
Deep search, 5 per day for free users
Grok (xAI) 2 models Grok 4.20
xAI's latest flagship, reasoning + non-reasoning, lowest hallucination rate
Grok-3
Free on X platform