Guides

Claude for Long Documents and PDFs

ClaudeAIHub. For legal, medical, or financial documents, always consult a qualified professional. Claude can assist but cannot replace expert review.

Why Claude Works Well for Long Documents

Claude is designed for long-context work. The current top models support context windows of up to 1 million tokens for Claude Fable 5, Claude Opus 4.8, and Claude Sonnet 4.6 — enough for very long documents, transcripts, or multiple documents in a single session. This makes Claude well-suited for work that requires reading, summarizing, or reasoning across large amounts of text.

See our Claude models guide for current context window sizes, which can change as models are updated.

What You Can Do with Long Documents in Claude

  • PDF summaries: Upload or paste a PDF and ask for a summary at any length or level of detail.
  • Contract and agreement review support: Ask Claude to identify key terms, obligations, deadlines, or unusual clauses. Always have legal counsel review before signing.
  • Research paper analysis: Summarize methodology, findings, limitations, and implications of academic papers.
  • Transcript review: Process meeting, interview, or podcast transcripts — extract decisions, action items, themes, or quotes.
  • Policy document review: Identify the key rules, who they apply to, and what actions they require.
  • Long report processing: Turn a 50-page report into a 1-page executive summary, or extract specific sections.
  • Side-by-side document comparison: Provide two versions of a document and ask Claude to list what changed.

Practical Workflow

  1. Upload or paste the document. Claude accepts pasted text, uploaded files (PDF, Word, txt), or text copied directly.
  2. Ask for structure first. Before diving in, ask Claude to outline the document: main sections, key themes, overall structure.
  3. Ask targeted questions. “What are the payment terms in Section 4?” is more useful than “summarize everything.”
  4. Extract specific elements. Ask for risks, obligations, action items, dates, or names as separate extractions.
  5. Summarize by audience. “Summarize this for a non-technical executive” produces a different output than “summarize this for an engineer.”
  6. Verify important claims. Always verify extracted facts against the original document before acting on them.

Prompt Templates for Long Documents

Executive Summary

Summarize this document in [LENGTH] for an executive audience.
Focus on: key findings, business impact, recommended next steps.
Avoid technical jargon. Use plain language.

[PASTE DOCUMENT]

Risk Extraction

Review this document and list all potential risks, liabilities, or obligations mentioned.
For each: describe the risk, who it applies to, and what the consequence could be.
Flag anything that may need professional (legal/financial/technical) review.

[PASTE DOCUMENT]

Table of Obligations

Create a table of all obligations in this agreement.
Columns: Party responsible | Obligation | Deadline or trigger | Consequence if not met

[PASTE AGREEMENT]

Compare Two Documents

Here are two versions of the same document.

Version 1: [PASTE]
Version 2: [PASTE]

List all meaningful differences between them. Ignore formatting changes — focus on substantive changes to content, terms, or requirements.

Study Notes from a Long Text

Turn this text into structured study notes.
Format: main topics as headings, key points as bullet points, important definitions called out.

[PASTE TEXT]

Find Contradictions

Review this document for internal contradictions or inconsistencies — places where one section conflicts with another.

List each contradiction with the relevant section references.

[PASTE DOCUMENT]

Important Cautions

  • Claude can make mistakes. It can miss content, misread terms, or confidently state something inaccurate. Always verify against the original document.
  • Legal documents need a lawyer. Claude can help you understand a contract or identify issues to discuss, but it cannot replace legal advice. Do not sign legal documents based solely on Claude’s review.
  • Medical documents need a doctor. For medical records, clinical reports, or healthcare decisions, consult a qualified medical professional.
  • Financial documents need an advisor. For investment contracts, tax documents, or financial filings, consult a qualified financial or tax advisor.
  • Sensitive documents and privacy: Be careful about uploading documents that contain personal, confidential, or proprietary information. Review Anthropic’s terms and your organization’s data policy before uploading sensitive files.

Which Claude Plan for Long Documents?

The free Claude plan includes document work, but usage limits may restrict long or complex sessions. Claude Pro or Max gives more sustained access. For very large documents or high-volume processing, the API may be more appropriate. See Is Claude Free? for plan details.

Related Guides

Frequently Asked Questions

For organized prompt templates, see Claude Prompts for Summarization — 20+ copy-paste prompts for documents, meetings, research papers, and study notes. To choose the right model for large documents, use the Claude Model Selector.