Claude has three different ways to handle a hard question. Web search fits a current fact that needs one or two tool calls. Extended thinking fits complex reasoning that does not need fresh web information. Research fits a question that needs multiple searches, cross-source synthesis, and citations.
Turn it on from the chat's bottom-left
+ menu, then choose Research. A blue indicator shows that the mode is active. Web search must be enabled for Research to work. Research is available on paid Claude plans and uses the same conversation limits as regular Claude, although multi-source sessions can consume those limits faster.References
- 1Use research on Claude
support.claude.com
- 2When should I use web search, extended thinking, and research?
support.claude.com


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