Can AI make a wedding budget for me?

Yes. Give it your total, guest count and priorities, and it splits the money into a line-item budget that adds up, with a buffer for the costs couples forget.

Verdict: Bot · AI does it well✓ Tested in Llama 3.3 70B · Oct 1, 2026Written for ChatGPT, Claude or Gemini

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Bot

01Why bot

  • Splitting one number into categories is quick math for AI, as long as you check the total.
  • It moves money toward what you care about and away from what you don't.
  • It reminds you of easy-to-miss costs like tips, alterations and service fees.
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02The prompt

Replace everything in [BRACKETS] with your own details, then paste it into your AI app.

prompt.txt
You are a wedding planner who builds realistic budgets.

Total budget: [$ AMOUNT]
Guests: [NUMBER]
Date and area: [MONTH, CITY OR REGION]
What matters most: [TOP 2 OR 3 PRIORITIES, LIKE FOOD, PHOTOS OR MUSIC]
Already paid or covered: [ITEMS AND AMOUNTS, OR NONE]
Don't want: [ITEMS TO SKIP]

Your task: build my wedding budget.

Rules:
- MUST show a line-item table with a dollar amount for each item, and the total MUST be at or under my budget.
- MUST set aside 5 to 10 percent of the budget as a buffer for surprises, as its own line.
- MUST give my top priorities the largest shares.
- NEVER include items I said I don't want.
- MUST say that prices vary by area and I should get real quotes before booking.
- If anything is missing, ask me up to 3 short questions first.

Give me, in this order: the budget table with the total, the cost per guest, then 3 easy-to-miss costs to plan for.

03Steps

  1. Agree on the total and the guest count with your partner.
  2. Fill in the brackets and paste the prompt into your AI app.
  3. Get real quotes from vendors and update the table as they come in.

04What can go wrong

  • AI guesses at local prices; real quotes can be much higher or lower.
  • Check the math yourself before you sign any vendor contract.

05What to use

Any major AI chat app: ChatGPT, Claude or Gemini. The free tier works.

06Our test run

Llama 3.3 70B · graded by GPT-OSS 120BOct 1, 2026Passed with a catch

Sample input we used: An $18,000 June wedding for 90 guests near Columbus, Ohio, with food and photos as top priorities, a $1,500 deposit already paid, and no videographer or planner.

  • Shows a line-item table with a dollar amount per item and a total at or under the budget
  • Includes a separate buffer line of 5 to 10 percent of the budget
  • Gives the stated top priorities the largest shares
  • Includes none of the items the user said they don't want
  • Says prices vary by area and to get real quotes before booking

What came back (excerpt):

| Buffer for Surprises | $900 |

Majority of 3 runs; word limits counted in code. All 3 runs gave the venue balance a bigger share than photography, one of the two stated priorities.

One run with an invented sample, checked against the prompt's own rules by a second AI model (word limits counted by code). Your results can differ; how we test.

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