Everywhere a dollar figure belongs in a Quofo quote, it says [PRICE]. You fill that in. There is not one rate, unit price or benchmark number anywhere in the package. That is not unfinished work — it is the single most important design decision in the product, and this page explains why.
The problem: AI is good at writing and bad at pricing
A language model predicts text from patterns. It has no access to what your supplier charged you last week, it does not know your hourly rate, it does not know what your sub costs, and it has no idea what your margin needs to be. Ask it for a number anyway and it will produce one — in exactly the same confident tone as the rest of the document.
This is not theory. It is in the reviews of the AI estimating tools that do fill the numbers in:
“To install and paint 8 doors, Handoff came up with a bid for $7,500.”
“I would’ve lost $10,000 in 1 job alone.”
“Inconsistent price quotes on same products despite the quotes being completed minutes apart.”
“I end up having to change most numbers as it does not reflect real world costs.”
That last one is the nastiest. Not that it gets it wrong, but that you do not see that it got it wrong. A quote with an invented number looks exactly as professional as a quote with your number.
What the research says
- An independent 2025 test found 65 to 75 percent accuracy when AI reads construction drawings, with hallucination rates of 15 to 18.7 percent on the more complex tasks. The model invents quantities without flagging that it is guessing.
- On commercial estimates, error rates from general-purpose AI chats run as high as 15 to 40 percent.
- A Dutch analysis calculates that close to 40 percent of the time AI saves leaks straight back out again into correcting low-quality output.
Work that last one through. If you save twenty minutes per quote but spend eight minutes checking whether the model invented any figures, you keep twelve minutes. And you still have to distrust every line.
What Quofo does: the price is not a field the AI gets to fill
The prompt carries one hard rule that overrides everything else:
Never calculate a price yourself. Every amount stays [PRICE] until I fill it in.
A second rule handles the quieter kind of error:
Never invent square footage, material quantities or prices you cannot read off the photo or that I have not given you. Ask for it, or leave it as a blank to fill in.
The result is that you never get a quote that looks finished but is not. You get a document where it is visible exactly which decisions are still yours. You cannot accidentally send it with a guessed number in it, because there is no guessed number in it — there is [PRICE], and that stands out.
For the arithmetic itself there is a margin calculator with working formulas: your hourly rate and your material costs in, floor price, target price and margin out. You type those numbers too. It calculates; it does not estimate.
What the AI does do for you
To be straight about where the line sits: Quofo absolutely does let the model exercise judgment. It reads the photo, describes the situation, puts the work in the right order, picks the line item descriptions that are standard in your trade, and attaches the exclusions where things usually go wrong. That is the work a language model is good at: structuring and phrasing.
The difference is where the liability sits. A badly phrased line is fixed with one sentence. A wrong number costs you the job — or worse, costs you money on a job you win.
What you still have to do yourself
This is not a button that produces a sendable quote. What is expected of you:
- Fill in the amounts. Every
[PRICE], from your own rates and your own purchasing. - Check the quantities. If the text says 900 sq ft, that came from your measurement or your description — not from the photo. Measure it yourself.
- Read it before you send it. Every time. Including the fiftieth time.
- Go look at the job. A photo does not replace an inspection. What is not in the photo is not in the quote.
If what you want is something that sets a price fully automatically, Quofo is not that, and you will not read anywhere on this site that it is.
Frequently asked questions
Can I trust ChatGPT to write a quote for me?
For the writing: yes, as long as you give it a clear structure. For the numbers: no. A language model has no access to current material prices, your hourly rate or your margin, and it does not announce when it is guessing. Let it do the words and keep the arithmetic yourself.
Does Quofo invent prices?
No. Every amount stays [PRICE] until you fill it in. There is not a single rate or benchmark figure in the package. That is an explicit rule in the prompt, not a side effect.
Why not just have Quofo fill the prices in? That would be faster.
Because the number that came out would not be your number. Your cost base, your margin and your region are not known to the model. A benchmark that is a hundred dollars off costs you the job or costs you money — and it saves you thirty seconds of typing at most.
So where does the time saving actually come from?
Not from typing numbers. From the fact that the structure, the line item descriptions and the exclusions are already there, so you are not starting from a blank document and not working out at half past ten at night what you forgot to write down.
Could I not just ask ChatGPT for this myself?
Yes. You can build it yourself. What you are buying is the tested structure, the trade language and the exclusions list per trade — plus the rules that stop the model from guessing. There is a step-by-step version on writing quotes with ChatGPT. If you want to see whether that makes a difference first: the Photo to Quote prompt is free, no account and no email address.
Try it yourself
The free version of the prompt carries the same [PRICE] rule as the paid packages. In five minutes you can see for yourself what it does and what it refuses to do.
Try the free prompt See the packages
More on quoting
- Writing quotes with ChatGPT: what works and what you still do yourself
- Quote follow-up: what to send on day 3, day 7 and day 14
- Quoting without a subscription: what it costs once
Sources
Review quotes: Capterra — Handoff reviews and App Store — Handoff Construction Estimator. Accuracy and hallucination on construction drawings: ProfitDig and Quotr. Error rates on commercial estimates: Augmented Trades. Time lost correcting AI output: Timmermans Media (Dutch-language analysis). All sources consulted in August 2026. Quotes are reproduced verbatim from public reviews and are not shortened in a way that changes their meaning.