AI Search and Deep Research Tools Compared: Perplexity vs ChatGPT vs Gemini vs Claude vs Grok vs Google in 2026
Update — May 2, 2026: Read our new Grok 4.3 review. 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, ChatGPT Deep Research can browse the web for up to 30 minutes and pull from hundreds of pages. In 2026, every major AI tool has shipped its own version of search, deep research, or both, and the gap between “ask a question” and “commission a research assistant” has collapsed into a single click. This guide compares the six AI search and deep research tools most people will actually use in […]
