KasiPay

AI Copywriting Process & Editorial Judgement Case Study

Overview

KasiPay is a fictional low-fee money transfer app for township entrepreneurs and informal traders in South Africa. The goal: write 10 headlines and one hero body paragraph for a launch campaign, targeting a spaza shop owner in Soweto who sends money home to family in Limpopo every month.

Rather than running the brief through a single AI tool and shipping the output, I ran the same brief through three different tools — ChatGPT, Gemini, and DeepSeek — then compared, edited, verified, and rewrote. This case study shows exactly how that process works.

The Brief

• Product: KasiPay — low-fee money transfer app
• Audience: A spaza shop owner in Soweto sending money to family in Limpopo monthly
• Key fact: KasiPay charges 2.5% per transfer. Competitors charge up to 8%
• Tone: Warm, empowering, plain-spoken. No corporate clichés ("revolutionary", "seamless", "game-changer", "financial freedom")
• Output: 10 headlines (max 10 words each) + 1 hero paragraph (max 60 words)

Step 1: The AI Draft

I ran the identical brief through three tools. Same product, same audience, same banned words, same word limits. Only the framing shifted slightly to test how each one responded to context.

ChatGPT

Clean, safe, forgettable

• Send More Home. Keep More Here.
• Stop Losing Your Money to Fees.
• Why Pay 8% When 2.5% Works?

My reaction: Functional. Followed the brief. But almost every headline is a 3-word swap from the next. No risk. No personality. It reads like a bank wrote it — which is exactly what the brief said not to do.

Gemini

Competent but off-brand

• Keep 5.5% more cash in your pocket every month.
• Send money to family for less than traditional banks.
• Spaza shop owners: stop losing your profits on transfer fees.

My reaction: Two problems jumped out immediately (see Step 3). And "heavy graft" — that's British slang. A Sowetan spaza owner doesn't say "graft". Gemini doesn't know the audience.

DeepSeek

The clear winner on voice

• You send R1,000. They get R1,000. Almost.
• Your mother shouldn't pay for your transfer.
• Every rand you keep is a rand home.

My reaction: Finally. Real language. Real scenarios. Emotional truth without melodrama. DeepSeek wrote like someone who understands the reader.

Step 2: Comparing the Tools

Step 3: Editorial Judgement

Here's the part AI can't do. I read every line across all three tools and asked three questions:

• Does it sound like a real person — specifically, a spaza owner in Soweto?
• Is every claim defensible, or did the AI embellish?
• Would this line survive being said aloud to the actual customer?

Lines I rejected, and why

The one line I fought for

It names the loss in the reader's own language and lets them feel the gap before we explain it. That's what 8% versus 2.5% actually means at a counter in Soweto. It's honest, specific, and trusts the reader to do the math.

Step 4: Verification

AI writes confidently, even when it's wrong. So every claim that reaches the final copy gets checked.

Three real issues I caught in this run

• The "5.5% more" sleight of hand (Gemini): Assumes the reader pays 8%. The brief only stated competitors charge up to 8%. The math is technically plausible but strategically dishonest. Cut.
• The invented competitor category (Gemini): "Traditional banks" were never mentioned in the brief. Gemini invented a competitor set. Cut.
• The tone-deaf word choice (Gemini): "Heavy graft" is British working-class slang. A Sowetan spaza owner doesn't say it. Subtler failure — cultural, not factual. Rewritten.

Step 5: Final Output

Headline chosen

Hero paragraph (rewritten)

Every month, you send money home. You count it. You hand it over. And somewhere between your counter and your mother's door, up to 8% disappears. KasiPay takes 2.5%. Same transfer. Same family. More of your money arrives. Download KasiPay. Send more. Lose less.

Why this made the cut

• Opens with a specific, familiar moment — not an abstract benefit
• Names the loss in rands, not percentages
• Trusts the reader to feel the gap
• Ends with a plain, human call to action

What This Case Study Shows

Skills Demonstrated

A Note on How I Use AI

I don't use AI to write for me. I use it to think faster. ChatGPT gives me volume. Gemini gives me a second opinion. DeepSeek gives me range. But every line that reaches a client passes through my judgement first.

If it sounds like AI wrote it, I haven't finished my job.