How to Get ChatGPT or Claude to Draft Attorney Letters That Look and Sound Like You

To get ChatGPT or Claude to draft attorney letters that look and sound like you, give it a letter you already trust, provide the facts and terms for the new matter, explain what should stay the same, and tell it not to guess about missing information. Then review the result carefully before sending it.

Why do AI-generated legal letters sound generic?

A prompt like “write a demand letter for my client” leaves too much open. ChatGPT or Claude has to guess how you organize the letter, how much law you include, how aggressive the tone should be, and how you normally state a demand or deadline.

“Write like an experienced employment lawyer” is still too broad. Give the AI a representative letter you have already reviewed and tell it how to use that example.

Start with a letter you already trust

Choose an old letter that is similar to what you want to create. A prior demand letter is usually a better example for a new demand than a brief, complaint, or unrelated client communication.

Define the example’s role:

Use this prior letter as an example of my organization, tone, and writing style. Do not carry over its client names, facts, dates, amounts, legal conclusions, demands, or deadlines.

Asking AI to “update” an old letter without that limitation risks carrying details from the old matter into the new draft.

Before uploading client information, follow your firm’s confidentiality policy and confirm the AI service’s account type, settings, and contractual terms.

Give it the information it cannot find on its own

ChatGPT and Claude need the facts, terms, and instructions for the new letter. You do not need a formal intake sheet to provide them.

You can:

• type the facts directly into your prompt;
• upload a Word document containing your notes;
• attach relevant emails or matter documents;
• dictate what happened;
• upload legible handwritten notes; or
• combine any of these approaches.

Use any format that gives the AI the necessary information, which may include:

• who the client and recipient are;
• what happened and when;
• what the letter is intended to accomplish;
• the claims or issues you want addressed;
• any amounts or terms to include;
• the action you are requesting; and
• the response deadline.

The AI cannot know a fact that is not in the conversation, your uploaded materials, or a connected source it can access. If you have not supplied the settlement amount, hourly rate, recipient address, or response deadline, it should ask—not invent one.

Tell it:

If any information needed for the letter is missing or unclear, ask me about it before drafting. Do not invent facts, dates, amounts, claims, recipients, demands, or deadlines.

Your instructions do not need to be formal

You do not need to write a detailed style guide before ChatGPT or Claude can help. If you have a good prior example, your instructions may be as simple as:

Use my letter from the Smith matter as the starting point. This situation is very similar. Change the client, facts, amount, and deadline as described in my notes, but otherwise leave most of the letter alone.

That is often closer to how lawyers already work: find the best old document, copy it, and change only what needs to change.

The more relevant examples the AI can access, the less you may need to explain in the prompt. You can refer to a particular prior letter, ask it to find the closest example, or give a quick correction in ordinary language:

• Make this less aggressive.
• Keep the opening from the old letter.
• Use shorter paragraphs.
• Do not add any new claims.
• Leave the standard preservation section alone.

Save detailed rules when you repeatedly make the same correction or want several people to follow the same approach. Otherwise, a trusted example and a clear description of what should change can do most of the work.

Use a simple drafting prompt

You can adapt this prompt for ChatGPT or Claude:

Draft a [TYPE OF LETTER] for attorney review.

Use the attached prior letter as an example of my organization, tone, and writing style. Do not carry over its client names, facts, dates, amounts, legal conclusions, demands, or deadlines.

The information for the new letter is in [MY PROMPT / ATTACHED NOTES / ATTACHED MATTER DOCUMENTS]. Use those materials for the new matter.

Change [DESCRIBE WHAT SHOULD CHANGE]. Otherwise, preserve the organization and language that still fit the new matter. [ADD ANY INFORMAL PREFERENCES OR CORRECTIONS HERE.]

Before drafting, identify any important information that is missing or inconsistent. Do not guess. Ask me for what you need.

Answer any questions, review an outline if the letter is complicated, and then request the draft. For a detailed demand involving disputed facts, legal authorities, or damages calculations, work in smaller steps and verify each part against the source materials.

Check for facts carried over from the old letter

A polished draft can still contain the wrong information. Before sending it, check specifically for details inherited from the example:

• names and pronouns;
• employers, companies, and opposing parties;
• addresses and email addresses;
• dates and chronology;
• compensation, damages, rates, and other amounts;
• legal claims and cited authorities;
• settlement terms and deadlines; and
• referenced attachments.

Also verify every important statement against the new matter materials. ChatGPT and Claude can misunderstand a source, omit a qualification, or fill a gap with something plausible. Neither tool eliminates the attorney’s responsibility for the communication.

The final Word document is part of the job

Good text is not yet a finished attorney letter. The document may still need the firm’s letterhead, typography, address block, subject line, signature block, page breaks, and enclosure notation.

The workflow often becomes manual at this point: copy the answer into an old Word file, repair the formatting, save another version, make a substantive change, and repair something again. For firms sending these letters every week, document production can consume much of the time AI was supposed to save.

DocketDrafter handles most of this setup for you

The DIY workflow above works, but it asks the attorney to find the right old letter, upload it, explain how to use it, repeat prior preferences, manage versions, and rebuild the result in Word.

DocketDrafter handles that setup ahead of time. We configure the firm’s trusted letters, reusable preferences, templates, letterhead, and Word-document rules in a playbook that Claude or ChatGPT can use. The attorney can then give ordinary instructions such as:

Use my demand letter from the Smith matter. Update it with the facts in these notes, change the demand to $75,000, and otherwise leave it substantially alone.

The AI assistant can retrieve the prior letter, follow the firm’s saved instructions, and return a polished Word document using the firm’s established layout. The attorney does not have to reassemble the full workflow in every chat.

Claude or ChatGPT still supplies the AI, and the attorney still controls the facts, strategy, terms, and final approval. DocketDrafter makes the surrounding process simpler and more repeatable, so the attorney can focus on the letter rather than prompts, file handling, and Word formatting.

Frequently asked questions

Can ChatGPT write a legal demand letter?

ChatGPT can prepare a first draft from facts, instructions, and examples supplied by an attorney. The attorney must verify the facts, law, calculations, strategy, demands, and final communication.

Can Claude draft an engagement letter from one I used before?

Yes, Claude can adapt a prior engagement letter when you provide the new client and engagement terms. Tell it what may be reused, prohibit it from carrying over old matter information, and review every provision before sending it.

How many writing samples should I provide?

Start with one strong example that closely matches the new letter. One relevant, approved sample is often more useful than a large collection of inconsistent documents. Add more examples when they represent different document types or clearly reinforce the same preferences.

How do I keep AI from inventing missing facts?

Tell it to identify missing information and ask questions before drafting. Do not assume that instruction is foolproof: compare the draft against your prompt, notes, and source documents before sending it.

Can ChatGPT or Claude put the letter on my firm’s letterhead?

That depends on the interface and tools available to the AI. DocketDrafter gives supported ChatGPT and Claude workflows access to the firm’s configured templates and Word-document system.

Does DocketDrafter work with both ChatGPT and Claude?

Yes. DocketDrafter works in ChatGPT Work and Claude. Your firm can use the same playbook, templates, prior work, and Word-document system from either assistant.

Start with one letter your firm already trusts

Start with one recurring demand letter, engagement letter, preservation notice, representation letter, or other document you regularly adapt.