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Why You Should Pick One Tool Before Comparing Five
By Nigel Guy · 2 min read
The instinct, faced with several AI tools that all claim to do roughly the
same thing, is to open accounts with all of them and run the same test
prompt through each, side by side, looking for the clear winner. It feels
rigorous. What it actually produces, most of the time, is five shallow
impressions from a test prompt that doesn't resemble your real work, and no
tool used deeply enough to know if it's actually good for you.
The rule: pick one tool that plausibly fits, commit to it for a real task
over a real week, and only compare once you know what you're actually
comparing against.
Why the side-by-side comparison fails you
A single test prompt run across five tools tells you about that prompt, not
about the tool. Real usefulness shows up over a string of exchanges, on your
actual recurring tasks, once you've learned the small habits — how it likes
to be asked, where it needs more context, what it's good at by default. None
of that shows up in round one of a bake-off, and five shallow round-ones
teach you less than one real week.
The mechanism
- Narrow to one candidate using the three questions — cost, data
handling, actual task fit — rather than trying every option that comes
up in a search.
- Commit to it for one real, recurring task for a full week. Not a demo
task — the thing you'd otherwise do by hand or with your current tool.
- Notice specifically what it's bad at, not just whether you liked it
overall. A specific gap ("struggles with X format") is comparable
information; a vague impression isn't.
- Only then compare, if you still want to. Now you have one real
reference point and a specific gap to test the alternative against,
instead of five surface impressions.
What to skip
Skip running the same generic test prompt across multiple tools as your
main evaluation method — it measures the prompt, not the fit. Skip switching
tools mid-task because a headline about a competitor's new feature came out;
finish the week you committed to first.
Guardrails
- This assumes the first candidate was chosen reasonably, using something
like the three-questions check. Committing a week to an obviously wrong
fit wastes the week rather than saving it.
- Some decisions genuinely are close enough that a direct side-by-side is
the right call — high-stakes, one-off choices where you won't get a week
of real use either way. Use judgement about which situation you're in.
- None of this is a claim that any specific tool is better than another;
it's a method for finding out for yourself, since that answer depends on
your actual tasks.
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