How to Use AI to Summarize Contracts and Reports for Law Firms

AI tools like ChatGPT, Claude, and Gemini can condense lengthy contracts and reports into digestible summaries in minutes. This capability is particularly useful for initial review, due diligence, and client updates. However, AI is not a replacement for human review in regulated legal contexts.

AI's strengths:

• Speed: Summarizes hundreds of pages in the time it takes to read a few dozen.
• Consistency: Applies the same level of detail across multiple documents.
• Extracting key points: Identifies and highlights crucial clauses, obligations, and risks.

AI's limitations:

• Hallucinations: May invent or misinterpret contract clauses.
• Context understanding: Struggles with highly technical or domain-specific language.
• Confidentiality: Requires careful handling of sensitive client information.

The right approach: Use AI as a first-pass tool, not the final word. Human review remains essential for accuracy and compliance.

This workflow produces a reliable summary of a complex contract or report in under an hour, including review time.

Step 1: Prepare your document for AI.

Ensure the document is in a text-readable format (PDF text, not image-scanned). If your contract is heavily redacted or contains many non-standard fonts, OCR (optical character recognition) may be needed first.

Step 2: Brief the AI with your specific needs.

Provide a clear prompt that includes: the type of document, the specific information you need extracted (e.g., key obligations, termination clauses, confidentiality provisions), and any particular legal context.

Example prompt:

"Summarize this commercial lease agreement for a retail space, focusing on tenant obligations, renewal terms, and any unusual clauses. Highlight potential risks for the tenant."

Step 3: Review the AI-generated summary against the original document.

Check every extracted clause or point against the original text. Verify that the summary has not omitted critical information or introduced inaccuracies.

Step 4: Refine the summary for your audience.

If the summary is for a client, edit it to be clear and free of legal jargon. If it's for internal use, ensure it captures all necessary legal nuances.

Step 5: Log the process for your records.

Document that AI was used in the summarization process and that a human review was conducted. This is crucial for audit trails and maintaining compliance.

Use these prompts as a starting point for your AI tool:

General contract summary prompt:

"Summarize this [CONTRACT TYPE] agreement between [PARTIES] executed on [DATE]. Focus on: key obligations, termination conditions, confidentiality provisions, and any unusual clauses. Highlight potential risks for [PARTY]."

Report summarization prompt:

"Summarize this [REPORT TYPE] report dated [DATE] prepared by [AUTHOR]. Extract the main findings, conclusions, and any recommendations. Note any limitations or caveats in the report."

Key clause extraction prompt:

"From this [CONTRACT/AGREEMENT] document, extract and list all clauses related to [SPECIFIC TOPIC, e.g., 'indemnification' or 'intellectual property']. Provide the exact clause text and section number."

When reviewing AI output, watch for:

• Inaccurate or invented clause summaries
• Omission of critical information
• Overly legalistic or unclear language in the summary
• Failure to highlight potential legal risks or compliance issues

While AI is a powerful tool for initial document review, it is not a substitute for human legal judgment. Be aware of:

• Hallucinated clauses or facts: AI may create summaries that include information not present in the original document.
• Misinterpretation of legal language: AI may misread or misinterpret complex legal terminology or context-specific provisions.
• Confidentiality and data security: Ensure your AI tool complies with legal data protection standards.
• Lack of domain-specific knowledge: AI may not fully understand the nuances of specific legal areas or recent case law.

Mitigation strategies include:

• Always cross-reference AI summaries with the original documents.
• Use AI for initial review, not final approval.
• Keep your AI tool updated with the latest legal terminology and precedents.
• Implement strict access controls for sensitive documents processed by AI.

To assess the time savings:

1. Log the time taken to summarize a complex document manually.
2. Use the AI workflow described above for a similar document.
3. Compare the times, considering both the AI processing time and the human review time.

Typical estimates:

• Manual summary of a 50-page contract: 2–4 hours
• AI-assisted summary (including review): 45–90 minutes

These estimates vary based on document complexity, AI tool proficiency, and the depth of human review required. The actual efficiency gain depends on how well the AI output aligns with your needs and how much review is necessary.