Few-Shot Prompting - Show, Don't Just Tell
9 min read
Some things are hard to describe but easy to demonstrate. Your brand voice is the classic case: "friendly but professional" means something different to every reader. The fix is one of the most powerful techniques in prompting — give the AI examples of what you want. This is called few-shot prompting ("shots" just means examples).
Why examples beat descriptions
LLMs are pattern-completion machines: show them two or three examples of a pattern and they will continue it with uncanny accuracy. An example carries dozens of unspoken decisions — sentence length, warmth, emoji or no emoji, how you sign off, how formal you get — that you would struggle to list as rules.
Descriptions tell the AI about the target. Examples are the target.
Few-shot in action
Priya runs an independent bookshop and answers every Google review personally. She wants AI drafts that sound like her. Instead of describing her style, she shows it:
I reply to customer reviews for my bookshop. Here are two real
replies I've written, so you can match my voice:
Review: "Lovely little shop, staff helped me find a gift in
5 minutes."
My reply: "Thanks so much, Dana! Five-minute gift rescues are
our specialty. Hope they love the book — come tell us!"
Review: "Nice selection but a bit cramped in the back."
My reply: "Thanks for the honest note, Sam — you're right, the
back corner gets cozy. We're rearranging shelves this spring.
Glad the selection made up for it!"
Now draft a reply in my voice to this new review:
"Ordered online, pickup was ready in an hour. Great service."The draft comes back warm, brief, first-name, lightly playful — because the examples said all of that without a single rule being written.
Getting few-shot right
- Use 2 to 4 examples. One can be a fluke; five or more rarely adds much for everyday tasks.
- Use your best real material, not invented samples. Your actual sent emails, your actual top-performing posts.
- Keep examples consistent. If one is chatty and one is formal, the AI will wobble between them.
- Match the format exactly. If you label examples "Review:" and "My reply:", label the new item the same way.
- Include a tricky case if you have one. An example of how you handle a negative review teaches more than three happy ones.
Where few-shot shines for small businesses
- Matching your voice: emails, review replies, social captions, product descriptions.
- Enforcing a structure: show one perfect meeting summary and every future summary follows it.
- Classifying and sorting: show how you tag customer inquiries ("billing," "warranty," "general") and the AI will tag the rest of the inbox the same way.
- Rewriting to a house style: show a before-and-after pair, then hand over new "befores."
One caution: examples steer style and format powerfully, but they do not verify facts. If your examples mention a discount or policy, the AI may happily reuse it in new drafts — so always check names, numbers, and promises before anything goes out.
Try it now
Find two emails or posts you have written that sound exactly like you and got a good response. Build a few-shot prompt: paste both as examples, labeled consistently, then ask the AI to write one new item in the same voice. Compare it with what you get from a description-only prompt like "write in a friendly professional tone." Most people never go back.