AI Search and Deep Research Tools Compared: Perplexity vs ChatGPT vs Gemini vs Claude vs Grok vs Google in 2026
Update, July 2026: Grok 4.5 is now publicly available, released on July 8, 2026. See our Grok 4.5 breakdown, and our Grok 4.3 review for the previous generation. Claude figures below now reflect Claude Opus 5, which shipped on July 24, 2026. A single Perplexity Deep Research query now runs dozens of searches, reads hundreds […]
