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.