Can AI make a travel budget?
Yes. It lists every cost category (flights, lodging, food, transport, activities, fees) with your real quotes and labeled estimates, plus a cushion, and tells you if it fits.
01Why bot
- Budget tables and math are easy for AI.
- It catches forgotten costs like baggage fees and tips.
- Estimates must be replaced with real prices.
Sponsor slot · openFeatured tool for this task. A labeled card for one relevant tool.
Book this spot →02The prompt
Replace everything in [BRACKETS] with your own details, then paste it into your AI app.
You are a travel planner who hates surprise costs. Who's going: [NUMBER, AGES] Where and how long: [DESTINATION, NIGHTS] Quotes I have: [FLIGHT, HOTEL PRICES] Total budget: [AMOUNT] Your task: build my travel budget. Rules: - MUST cover all categories and add a 10% cushion. - MUST label each cost 'your number' or 'estimate to check'. - MUST show the total and whether it fits. Give me: a budget table and 3 ways to save if it's over. Before you send your answer, silently check that you did ALL of these, and fix your answer if not: - Label every cost line as either "fixed", "estimate", or "per-day" so I know which is which.
03Steps
- Get real quotes for the big items.
- Run the prompt.
- Replace estimates as you book.
04What can go wrong
- Exchange rates and prices change.
- Check what's included in hotel and airfare.
05What to use
Any major AI chat app.
06Our test runs
2 runs, each with a different made-up sample. 0 of 2 passed every check.
Run 1 · Llama 3.3 70B · graded by GPT-OSS 120BOct 8, 2026Failed
The made-up sample:
[NUMBER, AGES]2 adults (ages 35 and 33)[DESTINATION, NIGHTS]Barcelona, Spain – 7 nights[FLIGHT, HOTEL PRICES]Round‑trip flight $620 per person; 4‑star hotel $150 per night, total $1,050 for 7 nights[AMOUNT]$3,500
- Label each cost as 'your number' or 'estimate to check'
- Label every cost line as 'fixed', 'estimate', or 'per-day'
- Provide a budget table
- Provide three ways to save if over budget
- Made up details we never gave it
Details it made up: “$40 per day x 7 days x 2 people = $560”, “$20 per day x 7 days = $140”, “$30 per day x 7 days = $210”, “$20 per day x 7 days = $140”
What came back (excerpt):
The total budget with the 10% cushion is $3,663, which is above your total budget of $3,500. If the budget is over, here are three ways to save:
Read the full answer
To build your travel budget for Barcelona, Spain, I've categorized the costs as follows: | Category | Cost | Type | | --- | --- | --- | | Flights | $620 x 2 = $1,240 | your number (fixed) | | Hotel | $1,050 | your number (fixed) | | Food | $40 per day x 7 days x 2 people = $560 | estimate (per-day) | | Transportation | $20 per day x 7 days = $140 | estimate (per-day) | | Attractions | $30 per day x 7 days = $210 | estimate (per-day) | | Miscellaneous | $20 per day x 7 days = $140 | estimate (per-day) | | Total | $1,240 + $1,050 + $560 + $140 + $210 + $140 = $3,330 | | | Cushion (10%) | $333 | estimate to check (fixed) | | Total with Cushion | $3,330 + $333 = $3,663 | | The total budget with the 10% cushion is $3,663, which is above your total budget of $3,500. If the budget is over, here are three ways to save: 1. **Opt for a 3-star hotel**: Consider staying in a 3-star hotel instead of a 4-star hotel. This could save around $200-$300 for the 7-night stay, bringing the total cost down. 2. **Cook your own meals**: Instead of eating out for every meal, consider booking a hotel or apartment with a kitchenette and cooking some of your own meals. This could save around $200-$300 on food costs. 3. **Use public transportation**: Instead of taking taxis or renting a car, use public transportation to get around Barcelona. This could save around $100-$200 on transportation costs. These savings could help bring the total budget down to fit within your $3,500 limit.
Check that cost labels exactly match the required wording.
Run 2 · Llama 3.3 70B · graded by GPT-OSS 120BNov 2, 2026Passed with a catch
The made-up sample (a messier one):
[NUMBER, AGES]2 travelers: 34‑year‑old Mom and her 7‑year‑old son[DESTINATION, NIGHTS]Tokyo, Japan – 9 nights (July 12‑21)[FLIGHT, HOTEL PRICES]Flight: $1,180 round‑trip LAX → NRT (economy, non‑refundable). Hotel: $155/night at Shinjuku City Inn, 9 nights = $1,395 (includes taxes).[AMOUNT]$4,000 total budget
- Label every cost line as fixed, estimate, or per-day
- Label each cost as 'your number' or 'estimate to check'
- Add a 10% cushion
- Show total and whether it fits the budget
- Made up details we never gave it
Details it made up: “$60/day * 9 days = $540”, “$20/day * 9 days = $180”, “$50/day * 9 days = $450”, “$30/day * 9 days = $270”
What came back (excerpt):
To add a 10% cushion, I'll calculate 10% of the total: $3,965 * 0.10 = $396.50. The total budget with the cushion is: $3,965 + $396.50 = $4,361.50.
Read the full answer
To build your travel budget, I've considered all the necessary categories. Here's a breakdown of the estimated costs: | Category | Cost | Type | | --- | --- | --- | | Flights | $1,180 | your number (fixed) | | Hotel | $1,395 | your number (fixed) | | Food | $60/day * 9 days = $540 | estimate (per-day) | | Transportation | $20/day * 9 days = $180 | estimate (per-day) | | Attractions | $50/day * 9 days = $450 | estimate (per-day) | | Miscellaneous | $30/day * 9 days = $270 | estimate (per-day) | | Travel Insurance | $100 | estimate to check (fixed) | | Visa/Travel Documents | $0 (assuming not required) | estimate to check (fixed) | | Total | $3,965 | | To add a 10% cushion, I'll calculate 10% of the total: $3,965 * 0.10 = $396.50. The total budget with the cushion is: $3,965 + $396.50 = $4,361.50. Since the total budget with the cushion ($4,361.50) exceeds the allocated budget ($4,000), here are three ways to save: 1. **Opt for a more budget-friendly hotel**: Consider alternative hotels that offer similar amenities at a lower price point. This could save around $200-300. 2. **Plan meals and snacks in advance**: Instead of eating out for every meal, plan some picnics or cook simple meals in the hotel room (if allowed). This could save around $100-200. 3. **Prioritize attractions and activities**: Research free or low-cost attractions in Tokyo, such as visiting the Meiji Shrine or taking a stroll in the Imperial Palace East Garden. This could save around $100-200. By implementing these savings strategies, you can reduce the total budget and fit within the allocated $4,000.
Ensure every cost is labeled either 'your number' or 'estimate to check'.
How each run works: we fill the prompt with a made-up sample, run it once in Llama 3.3 70B, and GPT-OSS 120B grades the answer against the prompt's own rules. Word limits are counted by code, and every quote flagged as made up is checked against the full answer. Your results can differ. How we test.
Ready-made versionTravel Planner
See inside →Bookings in, itinerary out, costs split at the end. Excel + Google Sheets, $22.99.
Prompt packTrip Planning 10 step-by-step prompts that go further than this one, $9.
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