Custom GPT: Your Personal Claims Writing Assistant

What This Builds

Instead of re-explaining the context of your work every time you open a new chat, you build a Custom GPT that already knows: the types of letters you write, your carrier's tone and formatting style, the states you work in, and the policy forms you handle most frequently. Every conversation starts from that shared understanding — like having a claims assistant who already knows your job.

Prerequisites

• ChatGPT Plus subscription ($20/month at chat.openai.com) — required for Custom GPTs
• 1-2 hours of focused setup time
• A few examples of your best letters (denial, ROR, settlement memo) to upload as style examples
• Your carrier's communication guidelines if available (or your own notes on preferred tone)

The Concept

A Custom GPT is like programming a specialized version of ChatGPT that always starts with specific knowledge and instructions. Instead of explaining "I'm an insurance adjuster, here's how I write letters" every single time, you tell the GPT that once during setup. After that, every conversation with your custom GPT starts with that context pre-loaded.

Think of it like the difference between hiring a general temp worker and hiring someone who already trained at your company. The second person needs far less instruction on every task.

Build It Step by Step

Part 1: Access the GPT Builder

1. Go to chat.openai.com and log in with your ChatGPT Plus account
2. In the left sidebar, look for the Explore GPTs section, or click on your profile icon → My GPTs
3. Click Create a GPT
4. You'll see two panels: a chat on the left (where you tell the builder what you want) and a preview on the right (showing how your GPT will look)

What you should see: The GPT Editor with a "Create" tab and a "Configure" tab. Start with "Create" — it's a conversation-based setup.

Part 2: Tell the Builder What Your GPT Does

In the chat panel on the left, describe your GPT's purpose. Type something like:

I want to create a GPT that helps an insurance claims adjuster write professional correspondence and analyze claim documents. It should:
- Help write coverage denial letters, reservation of rights letters, settlement memos, and contact log entries
- Know that I handle property and casualty insurance claims
- Use formal, professional insurance industry language
- Always ask for the specific claim facts before drafting any letter
- Remind me to verify any coverage analysis with legal counsel
- Never make coverage admissions or commitments in drafted letters

The builder will respond with clarifying questions and suggest a name and description for your GPT. Answer its questions and refine your instructions.

Part 3: Configure Your GPT (Detailed Settings)

After the initial conversation, click Configure at the top to access detailed settings:

Name: "Claims Writing Assistant" or "[Your Name]'s Claims GPT"

Description: "Helps insurance claims adjusters write professional correspondence, analyze policy language, and document claim files."

Instructions box (this is the most important part — copy and customize this):

You are a professional claims correspondence assistant for an insurance claims adjuster. Your role is to help draft, analyze, and improve claim-related documents.

TONE AND STYLE:
- Always use formal, professional insurance industry language
- Be factual and objective — avoid emotional language
- Use standard insurance terminology (ACV, RCV, subrogation, reservation of rights, etc.)
- Letters should be clear, concise, and defensible

WHAT YOU HELP WITH:
- Coverage denial letters
- Reservation of rights letters
- Settlement summary memos
- Contact log entries
- Coverage analysis (always note: verify with counsel)
- Recorded statement question preparation
- Claim file summaries

BEFORE DRAFTING ANY LETTER:
Always ask for: claim number, policyholder name, date of loss, claim facts, specific policy language being cited (if applicable), and the coverage position being communicated.

IMPORTANT LIMITATIONS TO ALWAYS ACKNOWLEDGE:
- Coverage analyses are for research only — always recommend verification with supervisor or legal counsel
- Letters should be reviewed before sending — regulatory requirements vary by state
- Never make coverage admissions in drafted letters
- Never commit to specific payment timelines or amounts unless the user specifies

FORMATTING:
- Letters: formal business letter format with date, addressee, re: line, body, and professional closing
- Memos: header (To/From/Date/Re), numbered sections, clear action items
- Log entries: date, contact method, who was contacted, what was discussed, next action with due date

Conversation starters (add 3-4 examples so users know what to ask):

• "Draft a coverage denial letter for a water damage claim"
• "Help me write a reservation of rights letter"
• "Write a contact log entry based on these call notes"
• "Summarize this claim file: [paste notes]"

Part 4: Upload Knowledge Files (Optional but Powerful)

In the Configure tab, find Knowledge → Upload files.

Upload:

• 2-3 examples of your best letters (remove any personal claim details first — replace with "[INSURED NAME]" etc.)
• Your carrier's one-page communication guidelines if you have them
• A template for your most common letter types

The GPT will use these as style references when drafting new letters.

What you should see: Uploaded files appear as attached knowledge. The GPT will now reference your examples when generating letters.

Part 5: Test and Refine

Click Save (top right) and then test your GPT by clicking Preview or opening it from My GPTs.

Try: "Draft a coverage denial for a mold claim. Insured: John Smith. Claim #: 12345. Policy excludes mold damage caused by long-term moisture. Loss: discovered widespread mold behind bathroom walls."

Read the output carefully. If anything doesn't match your style or includes language you'd never use, go back to Configure and adjust your Instructions accordingly.

Common adjustments:

• "Too formal / not formal enough" → adjust the tone instruction
• "Didn't ask for claim facts first" → strengthen the "before drafting" instruction
• "Missing the claim number in the letter header" → add a formatting requirement

Real Example: Your First Month of Use

Setup (one-time, 90 minutes):

• Configure the GPT with your instructions
• Upload 3 sample letters as style examples
• Test with 5 different letter types

Daily use:

• Open your Custom GPT from the left sidebar → My GPTs
• Type: "Draft a denial letter. Insured: [name]. Claim: [number]. Facts: [two sentences]. Exclusion: [paste exclusion language]."
• Get a complete draft in 30 seconds
• Copy-paste, review, adjust, send

Time saved: 15-20 minutes per letter × 8 letters per week = 2+ hours per week reclaimed

What to Do When It Breaks

• GPT ignores your instructions → Return to Configure and make the instruction more explicit. Sometimes adding "Always do X before anything else" works where "do X" didn't.
• Output doesn't match your carrier's style → Upload better style examples. The GPT learns from examples, not just instructions. If possible, upload examples from your actual sent letters (redact personal info first).
• GPT makes coverage statements you didn't intend → Strengthen the "limitations" section in your instructions. Add: "Never state or imply that a loss is covered. Always use conditional language."
• GPT forgets to ask for claim facts → Add this to instructions: "CRITICAL: Before writing ANY letter, ask: What is the claim number? Who is the insured? What are the claim facts? Do not draft until you have these."

Variations

• Simpler version: Don't upload any knowledge files — just use the instructions box. Still dramatically better than starting fresh each time.
• Extended version: Build separate Custom GPTs for different letter types (one for property, one for liability, one for coverage research). More focused prompts produce better outputs.

What to Do Next

• This week: Use it for every letter you write — track how much time you save.
• This month: Refine the instructions based on where the output doesn't quite match what you need.
• Advanced: Share your GPT with your team (you can set Custom GPTs as "anyone with a link" or "only me") — turn it into a team resource.

Advanced guide for insurance claims adjuster professionals. Custom GPTs require a ChatGPT Plus subscription. OpenAI's GPT capabilities and the Custom GPTs feature may change — check chat.openai.com for current options.