Think Build Implement Repeat
London, UK +44 7367 067226
WhatsApp FOLLOW f in X
  1. Home
  2. Blog
  3. Five Times an AI App Is the Wrong Answer
AI Apps

Five Times an AI App Is the Wrong Answer

When not to build an AI app: knowable rules, low volume, explainable decisions, output nobody can check, or an existing product that already does the job.

Updated 2 min readBy SpiderHunts Technologies

Free estimateNo obligation

Get a free estimate

Tell us what you need. A senior engineer reads every enquiry.

Takes under a minute. We never share your details.

  • Free consultation
  • No commitment
  • NDA on request

Prefer to talk? Book a free 30-minute call →

Quick answer — TL;DR

When the rules are knowable, when the volume is small, when the decision must be explainable, when nobody can check the output, and when a product already does it. Each has a cheaper answer that works better.

Turning down AI work is part of the job

We build AI applications and we decline them regularly. The projects that should not have been built are the ones that damage a business's appetite for the ones that should.

Check yours against these five before commissioning anything from anyone.

1. The rules are knowable

If you can write the logic down — and for pricing, eligibility, routing and thresholds you usually can — rules are faster, cheaper, perfectly explainable and impossible to talk into doing something strange.

Try writing them first. Succeeding solves the problem for a fraction of the cost; failing teaches you why it is hard.

2. The volume is small

The build, the evaluation and the monitoring are largely fixed costs regardless of volume. Below a few hundred instances a month, a person doing it carefully is usually better and cheaper.

3. The decision must be explainable

Where you must explain to a customer, a regulator or a tribunal exactly why a decision went the way it did, probabilistic output is a liability. Use rules for the decision and AI at most for surfacing information.

4. Nobody can check the output

If verifying an answer takes as long as producing it, automation has moved effort rather than removed it. The four shapes that work — extraction, classification, retrieval-based answering, first drafts — all allow a human to check in seconds.

5. A product already does it

  • Transcription, translation, general document extraction, meeting notes — mature markets
  • Standard support deflection for common products
  • General-purpose writing assistance

Building a bespoke version of a solved problem is how budgets disappear with nothing distinctive to show.

What to do instead

Write the rules. Buy the product. Fix the data capture so a future project is possible. Or wait six months and see whether it is still a problem — a surprising number are not.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Will you actually tell us not to build?

We have, in first calls. It costs us a project and it is the only way the recommendation means anything.

What if a competitor has one?

Ask what they specifically have in production and whether it is working. A great deal of announced AI capability is a pilot that never widened.

How do we know if our rules are knowable?

Ask an experienced person to write down how they decide. If they can, it is rules. If they say “you get a feel for it” and their decisions are demonstrably good, a model might help.

Is it worth building for the marketing value?

Customers increasingly discount AI claims, and a poor AI feature damages reputation more than not having one. Build it because it works.

Keep reading

More on AI Apps

AI Apps

The Hidden Work in 'Simple' AI Features

Why an AI feature that took an afternoon to demo takes weeks to ship: the evaluation, edge cases, guardrails, cost control and monitoring nobody sees.

Start here

Want us to talk you out of it?

Describe the problem and we will say plainly whether an AI app is right, or whether rules, a product or nothing serves you better.

  1. You tell us what you needTwo minutes on the form, or a message on WhatsApp.
  2. A senior engineer reviews itAnd comes back with questions, a realistic range and an honest view on fit.
  3. Free 30-minute scoping callWe talk through scope, options and a realistic estimate — with no obligation.
Free estimateNo obligation

Talk to someone who builds this

Send a short brief and we will come back with an honest view and a realistic range.

Takes under a minute. We never share your details.

  • Free consultation
  • No commitment
  • NDA on request

Prefer to talk? Book a free 30-minute call →