Nexley vs generic AI assistants
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Nexley vs ChatGPT for trade firms.
ChatGPT writes when you ask it. Nexley is connected to your Xero, inbox, diary and WhatsApp, and does the office work overnight for your yes.
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The short answer
ChatGPT is a clever tool you have to operate: you copy the job in, it writes a draft, and you do the rest. Nexley is more like a second brain plugged into your business. It’s connected to your Xero, inbox, diary and WhatsApp, it remembers your prices, your customers and how you word things, and it does the office work overnight, ready for your yes. £799 a month.
Side by side
What changes.
| ChatGPT | Nexley | |
|---|---|---|
| Who does the typing | You, copying and pasting | Nexley drafts, you approve |
| When it gets done | When you ask it | Overnight, ready by 7am |
| Knows your prices, Xero and diary | No | Yes, it's connected |
| Chases quotes and invoices | No | Yes, on your say-so |
| Sends anything for you | No | Only after your yes |
What Nexley does that ChatGPT can't
It works on your real books and messages.
It reads your Xero
Nexley works inside your own accounts. It drafts each invoice from the finished job, matches supplier bills and receipts to the right job, and keeps CIS straight. ChatGPT can't see your books, so you'd copy every figure in and out yourself.
It remembers your prices and how you work
Your rate card, your merchants' prices, your usual exclusions and the way you word a quote are all kept. You never paste them in again, and every quote comes out priced and worded like yours.
It knows your customers and your diary
Replies to enquiries offer real times from your diary. It knows who's waiting on a quote, who's overdue and which landlord has three gas checks due.
It does the work while you sleep
Send a voice note from the van. The quotes, invoices, orders and replies are drafted overnight and waiting at 7am. ChatGPT only works while you're sat typing to it.
It follows up for you
Quotes that go quiet get a nudge, and late invoices get chased on the schedule you set. Each one waits for your yes first.
When ChatGPT is the better pick
Be honest about what you need.
If you only need the odd letter rewritten, and you’re happy to do your own quoting and chasing, a ChatGPT subscription costs less. Nexley is for owners who want the office work done for them.
In detail
Nexley vs generic AI, in detail.
Plenty of contractors have already tried a general-purpose AI assistant — pasted a spec in, asked for a price, got something confident back. The difference with Nexley is not a cleverer model; it is everything around the model: UK construction context like NRM2 and JCT built in, live connections to your Xero, your price list and your merchants, and outputs you can trace line by line instead of taking on faith.
- Knows UK construction
- Connected to your tools
- Traceable, checkable output
The blank text box problem
A general-purpose assistant starts every conversation knowing nothing about you. It has never seen your price list, does not know your labour rates, cannot open your accounts, and holds no opinion on which merchant actually delivers to your postcode on a Friday. Ask it to price a job and it will produce something plausible — built on national averages and guesswork dressed as confidence. Plausible is precisely the danger: a made-up rate in fluent English is harder to spot than an empty cell in a spreadsheet.
None of this makes generic tools useless. For drafting an email, summarising a document or explaining an unfamiliar term, they are genuinely good — and honestly, for those jobs, a free assistant is all you need. The gap opens where construction stops being text.
Three gaps a text box cannot close
1. The context gap
UK construction runs on specifics: bills structured to NRM2, JCT and NEC terms with real consequences, retention held and released on dates, CIS deductions, RAMS expected before anyone steps on site. Nexley works inside those conventions by default — a bill of quantities comes out in the format a main contractor's surveyor expects, not in whatever shape the model improvised today.
2. The tools gap
A generic assistant can tell you that chasing invoices is important. It cannot raise one in your Xero, chase it when it falls overdue, photograph-capture a receipt from WhatsApp, or price a material list across up to 20 merchants — because it is not connected to anything. Nexley's accounting connection and its links into your other tools are the difference between advice and work. Advice you still have to act on; work is done when you look up.
3. The accountability gap
When a tender is on the line, “the AI said so” is not a defence. Every Nexley quantity traces to the drawing it was measured from and every rate to your own list, so checking the work takes minutes, not faith. A pasted-in answer from a text box offers you nothing to check against — and on a £30,000 package, unverifiable is another word for unusable.
The fair summary
Keep a generic assistant for generic work; there is no need to pay for what a free tool does well. Nexley earns its subscription on the work that needs your drawings, your rates, your books and your industry: tendering, quoting, procurement and the back office admin. The 7-day free trial is the honest test — give both the same tender pack and see which one produces something you would actually submit.
Put it to the testSame question, different answers
What each tool does with a real contractor's request.
“Price this tender pack”
Generic AI: a fluent estimate built on invented rates. Nexley: measured take-offs, an NRM2 bill priced from your list, ready for your review.
AI tendering & estimating →“Chase my unpaid invoices”
Generic AI: a template letter you must send yourself. Nexley: the overdue list read from your live books, and the chasing actually done.
Cashflow & Xero automation →“Get me a better material price”
Generic AI: tips on negotiating. Nexley: the same list priced across up to 20 merchants, with the winners on one table.
Supplier sourcing →Off the Tools: free guides for UK trades
Try it on your own jobs for 7 days.
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