Deep research with web search plus your own private documents — uniquely grounded.
Claude Research combines live web search with Claude's ability to analyze large uploaded documents simultaneously — making it the strongest choice when research needs to bridge public web sources with private internal context, like company reports, proprietary data, or unpublished materials.
Claude's research capability sits at the intersection of web search and document analysis — its strongest differentiator among deep research tools. With a 200K token context window, Claude can simultaneously search the web for current information and reason across large uploaded documents (reports, spreadsheets, PDFs, codebases) in a single research session. This makes it uniquely powerful for research questions that require integrating public web sources with private internal context. Projects feature stores persistent context and documents across sessions — enabling ongoing research workflows rather than one-off queries. Web search (Pro and Max) brings real-time information into the analysis. For users who want the research grounded in their own proprietary sources alongside the public web, no other tool matches this combination.
Upload a company's internal strategy documents, financial data, or proprietary research, then ask Claude to research the competitive landscape on the web and synthesize findings that directly inform your internal context. No other tool handles this private-public research bridge as well.
Upload a 300-page industry report or regulatory document and ask Claude to research current developments that update or contradict the document's findings. The 200K context window handles documents that would overflow competing tools.
Use Projects to build a persistent research workspace — upload key documents, store research context, and return across multiple sessions to continue building on previous work. Claude remembers the project context without re-uploading or re-explaining.
Yes — web search is available on Pro ($20/mo) and Max ($100/mo) plans. Free tier users can analyze uploaded documents but cannot search the web. Web search combined with document uploads in a single session is Claude's most powerful research mode — particularly useful when you need to augment internal documents with current external context.
Projects is a persistent workspace feature where you upload documents, set context, and continue research across multiple sessions. Unlike a one-off conversation, Claude remembers your project's documents and context each time you return. This is ideal for ongoing research — you don't need to re-upload documents or re-explain context for each new research query.
The 200K token context window (roughly 150,000 words) means Claude can hold an entire book, a 300-page report, or a full codebase in its active context simultaneously. For research involving very long documents — regulatory filings, technical specifications, academic dissertations — Claude can analyze the entire document at once rather than chunking it, preventing context loss that affects shorter-window tools.
The gold standard for AI research — 50-100 sources, one cited report.
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