AI Search and Deep Research Tools Compared: Perplexity vs ChatGPT vs Gemini vs Claude vs Grok vs Google in 2026
Update, July 2026: xAI has since announced Grok 4.5. See our Grok 4.5 breakdown, and our Grok 4.3 review for the model DeepSearch runs on today. A single Perplexity Deep Research query now runs dozens of searches, reads hundreds of sources, and delivers a cited report in 2 to 4 minutes. On the heavier end, […]
