Ask any AI writing tool for a post about getting your roof ready for winter and it will write you something sensible about ice dams. Ice dams are not a thing here. That is the whole problem in one example, and it repeats in dozens of smaller ways that are harder to spot.
These models learned to write from an internet that is overwhelmingly American. Nothing is wrong with the writing. What is wrong is a set of quiet assumptions underneath it, and most of them survive a quick read.
The short answer
The failures are not random, which is good news — a fixed checklist catches nearly all of them. Spelling drifts American, seasons invert, the money is wrong, the regulations are invented, the place names are thin, and the examples default to industries that barely exist here at our scale. Fifteen minutes with those six in mind will fix a draft that would otherwise quietly undermine you.
Seasons run backwards
This is the most common error and the most embarrassing, because customers notice immediately.
Ask for a seasonal piece and you will get advice pegged to a northern calendar: winterising in November, peak demand in July, a summer slowdown in January. For a New Zealand trade business, January is often the busiest month of the year and July is when the phone stops.
It is rarely as blatant as naming the wrong month. More often it is a phrase like "as the weather warms up in spring" attached to a paragraph that also mentions October, which happens to be right, sitting next to another that assumes the school year starts in September, which is not. Read anything seasonal twice.
The spelling drifts, and it drifts back
You will get "optimize", "color", "organization", "license" as a noun and verb interchangeably. Fine — you can ask for New Zealand English and it will comply.
The catch is that it does not hold. Long drafts start correctly and slide back to American spelling somewhere in the second half, particularly in list items and headings where the model is working from pattern rather than instruction. Search the finished draft for "ize" and "yze" before you publish. It takes five seconds and it catches most of it.
A related one: "gotten", "oftentimes", "reach out", "trash", "faucet", "realtor", "vacation", "HVAC". None of these are how anyone here talks, and a reader clocks them even if they could not tell you why the page felt off.
The money is subtly wrong
Dollar figures come out looking plausible and being wrong, because they are American dollars converted to nothing in particular.
A generated post about what a service costs will quote a range from the US market, drop a dollar sign in front and present it with total confidence. Sometimes it is out by a factor of two. It will also quietly ignore GST, which is unavoidable in any New Zealand pricing conversation and the first thing a customer asks about.
Never publish a number you did not supply. If you want a pricing post, give it your real figures and tell it whether they include GST. We wrote out the actual numbers for content pricing here as an example of what that looks like when the figures are real.
It will invent regulations
This is the failure that can genuinely hurt you.
Ask about anything touching building, employment, tax, tenancy, health and safety or food handling, and you will get a confident, specific, coherent paragraph about the rules. The structure will be right. The content will be a blend of Australian, British and American regulation with the names changed.
Consent thresholds, tenancy notice periods, employment entitlements, minimum standards — it states all of these as fact. A customer who acts on a wrong one and comes back to you has a legitimate complaint, and "the AI wrote it" is not a defence anyone will accept.
The rule we use is simple: if a sentence describes a legal obligation, either verify it against the actual source that morning or delete the sentence. There is no middle option.
The geography is a list of four cities
Ask for local colour and you get Auckland, Wellington, Christchurch, and Queenstown if it is feeling adventurous. That is the extent of it.
Which is a shame, because place is where the genuine opportunity sits. A post about what a job costs in Te Awamutu, or access problems on the Hibiscus Coast, or what southerlies do to a Dunedin exterior, competes against almost nothing. There may be two or three pages in the country properly answering it. That is a first-page ranking in six to eight weeks rather than six months.
The model will not reach for those places because it barely knows them. You have to supply them, and they are the most valuable thing you can add to any draft. The same applies to the details that go with them — the suburbs people actually name when they ring, the travel time that makes a job worth quoting, the supplier everyone in your trade uses.
The examples come from the wrong economy
Generated business advice assumes a bigger company than yours. It will reference your marketing team, your content calendar, your quarterly strategy session and your CRM workflow.
The median New Zealand business has under five staff. The person reading your blog post is frequently the same person who does the quoting, the invoicing and the actual work, reading it at nine at night. Advice pitched at a marketing department does not just miss — it signals that the page was not written for them, which is worse than saying nothing.
Watch for scale assumptions in the recommendations too. "Run A/B tests on your headlines" is reasonable advice for a site with ten thousand monthly visitors and useless for one with two hundred.
The tells that have nothing to do with New Zealand
Separately from the local problems, there is a house style these tools fall into, and readers are getting quicker at spotting it every year.
- The throat-clearing opening. "In today's fast-paced digital landscape, businesses must..." Delete the entire first paragraph and check whether anything was lost. Usually nothing was.
- The rule of three, endlessly. Three bullet points, three adjectives, three examples, in every section. Real writing is lumpier than that.
- Hedging where an answer belongs. "It depends on your unique circumstances" is what it produces when it does not know, and readers correctly read it as evasion.
- The summary that repeats the article. A closing section restating what you just read adds nothing and eats the space where a real conclusion should be.
- Headings that are labels, not questions. "Key Considerations" tells a reader nothing about whether to keep reading.
What to actually do about it
None of this argues against using these tools. It argues against publishing their output unread, which is a different and much easier problem to solve.
Give the tool more to work with than a topic — your region, your prices, your seasonality, the objections you hear. Most of the local failures above happen in the gaps where you supplied nothing and it filled in with the average of the internet. Then read the draft once with this list in your head, which after two or three posts takes about ten minutes.
Being a New Zealand business writing genuinely for New Zealand readers is a real advantage in search, because most of what ranks against you is generic international content that could have been written anywhere. Handing that advantage back by publishing the same generic content with your logo on it is the one mistake worth avoiding entirely.