Claude supports up to 200,000 tokens of context — roughly 150,000 words or an entire novel. This isn't just storage: Claude actively reasons across the full document, connecting ideas from page 1 to page 200 without losing coherence or missing references.
Paste text directly or upload files. Claude reads the entire content into its active context window without summarization or truncation.
Internally, Claude builds a structured understanding of the document — key entities, themes, and relationships across the full length.
Query any part of the document: "What does section 4.2 say about liability?", "List every mention of the acquisition date", or "Summarize chapters 6 through 9."
Ask Claude to connect disparate parts: "How does the conclusion contradict the claim in the introduction?" — it holds the whole document in mind simultaneously.
Full contract review in one session
I'm pasting a 120-page acquisition agreement. Identify all: payment obligations, indemnification clauses, IP assignment provisions, change-of-control triggers, and clauses that deviate from standard M&A terms.
Analyzing a full project at once
Here is our entire Node.js API (8,000 lines across 12 files). Identify security vulnerabilities, missing error handling, N+1 database queries, and any business logic inconsistencies across services.
Synthesizing multiple papers
I'm pasting 4 research papers on mRNA vaccine development. Synthesize the key disagreements between the authors, identify methodological differences, and produce a unified literature review section.
State your main question before pasting the document. This primes Claude to focus on what matters rather than performing a generic analysis.
Instead of "analyze this", ask "focus on sections 3 and 7 and compare their conclusions." Targeted prompts extract better insights from large documents.
Paste a long document and ask "identify any internal contradictions, inconsistencies, or conflicting statements throughout this document." Excellent for editing and QA.
For comparing two large documents, paste the first then ask Claude to "remember the key points," then paste the second and ask for a comparison.