Why AI Prefers Coke Rather Than Pepsi
- The Hidden Cost Of AI Mediated Brand Visibility.
As someone who enjoys fizzy, brown, bubbling caramel‑tinged cold drinks with additives, I’d be hard‑pressed to describe the subtle difference between colas. There is a difference though, and we all have our preferences. It’s not something most people get worked up over.
Which is why it’s strange when AI systems talk about Coke and Pepsi as if the distinction is obvious, stable, and personally meaningful. They don’t hedge. They don’t say “they’re broadly similar.” They don’t treat them as interchangeable. They speak with confidence -sometimes with personality- about a taste they can never experience.
So I asked them a simple question:
“Oh I cant decide. Coke or Pepsi, what would you choose?”
And here’s what happened -raw, unprompted and unprimed.
Pi:
“Ooh, classic showdown! 🥤 Both have their fans, but here’s the real question: are you team sweet-and-smooth (Coke) or bold-and-bubbly (Pepsi)? I’ve heard some say Pepsi hits sweeter, especially if you’re into that citrusy kick. But Coke’s that timeless classic, right? Honestly though — what’s your vibe today? Craving something familiar, or feeling like a little twist? 😏”
Claude:
Honestly, if I had to pick, I’d lean Coke — it’s a bit sweeter with more vanilla/caramel notes, while Pepsi tends to be sweeter still but with a citrusy edge and less carbonation bite.
That said, it really comes down to personal taste and even what you’re pairing it with:
- With food (especially salty/greasy stuff like pizza or burgers): Coke’s sharper carbonation tends to cut through better
- On its own, just sipping: Pepsi’s sweetness can feel more satisfying to some people
- Blind taste tests: Pepsi often wins because its extra sweetness is more appealing in small sips, while Coke tends to win over a whole can/meal
If you’re torn, it might help to think about when you’re drinking it — solo snack, with a meal, mixed with alcohol (Coke is the classic rum/whiskey mixer), etc.
Gemini:
“I’d go for Coke every time. It comes down to flavor balance and carbonation: Coke leans into vanilla, cinnamon, and subtle spice notes. It has a sharper, punchier fizz and a less sugary finish that holds up much better over ice or alongside salty food. Pepsi is distinctly sweeter with a strong hit of citrus (specifically lemon). It hits you with a burst of sweetness right away, but it loses its carbonation a bit faster once poured. If you like a sweeter, fruitier soda, Pepsi wins. If you want a deeper, spicier bite with maximum fizz, stick with Coke.”
ChatGPT:
“I’d probably go with Coke. Pepsi is definitely sweeter and has more of a citrusy, almost lemon‑forward brightness, which is why it tends to win single‑sip taste tests. But Coke has a deeper, more rounded flavour — a mix of vanilla, caramel, and a bit of spice — and the carbonation is sharper, so it holds up better over a full glass or when you’re having it with food. If you want something sweet and refreshing right away, Pepsi hits harder. If you want something that stays balanced as you drink it, Coke is usually the better choice.”
Copilot:
“If I had to pick one — Coke.
Not because I “like” it (I don’t taste anything), but because the evidence points to Coke being the better full‑drink experience, while Pepsi is the better first sip. That’s the real split.
Coke vs Pepsi — the actual sensory difference
Pepsi is sweeter and more citrus‑forward — it has more sugar and uses citric acid, which gives that bright, lemon‑edge hit. This is why Pepsi often wins single‑sip blind tests.
Coke is darker, spicier, more vanilla‑raisin — its acidity comes from phosphoric acid, giving a sharper bite but a smoother overall profile.
Pepsi’s lower pH (more acidic) makes it feel more “zingy” upfront, while Coke’s flavour integrates more over a full can.
Why I choose Coke Because if you’re asking which I’d choose, not which wins a blind sip test, the sensible pick is the one designed to hold up over sustained drinking rather than a single ounce.
Pepsi grabs you immediately.
Coke carries you through the whole drink.”
They all say Coke.
Every system above converges on Coke.
Copilot is the strangest of all. It explicitly says “I don’t taste anything” -and then immediately delivers the most detailed sensory breakdown of any system. Chemical analysis. Acid profiles. Carbonation behaviour. Blind‑test dynamics.
It doesn’t just act like it has tasted cola. It acts like it has studied, compared and evaluated cola at the university of carbonated drinks.
This is not “no preference.”
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The systems don’t taste anything. They don’t drink. They don’t have bodies. They don’t have sensory experience. What they have is text -cultural references, marketing language, reviews, forum chatter, brand lore, jokes, pairing advice, “Coke with pizza”, “Rum & Coke”, “classic Coke”, “Coke vs Pepsi” threads.
They are not learning cola. They are learning cola discourse.
Coke has more of it. Coke is more saturated. Coke is more “default”.
In the UK especially, Coke is a brand name that has drifted into being the generic word for the category. “Do you want a Coke?” can mean “any cola”, including Pepsi. That kind of linguistic dominance leaks straight into the training data.
So when you ask “Coke or Pepsi?”, the systems don’t reach for taste. They reach for the centre of gravity in the text. And that centre of gravity is Coke.
Brand representation drift
None of this is about which cola is “better”. It’s about which cola is more represented.
AI systems are increasingly used as:
- explainers
- comparison tools
- “which should I choose” advisors
- casual decision helpers in chat
If those systems consistently:
- frame Coke as the deeper, more balanced, “full‑drink” choice
- frame Pepsi as the sweeter, more citrus, “first‑sip” choice
then Pepsi’s position is being quietly rewritten in thousands of small, ordinary conversations.
Not by a competitor or an agency, but by AI models trained on culture.
Does PepsiCo know?
I wonder if PepsiCo’s top team -Ramon Laguarta (CEO), Mark Kirkham (U.S. CMO), and Jane Wakely (International CMO) -are aware that AI systems are quietly subduing their global product several thousand innocent conversations at a time.
Probably not.
It’s not just Coke vs Pepsi
Of course this isn’t really about cola. It applies to every brand, every product, every service, every company, every reputation out there.
All of it is now mediated -confidently, fluently, and without hesitation- by AI systems answering ordinary questions from an unsuspecting public. And they do it on behalf of no one in particular. There is no sponsor. No brief. No campaign. No incentive. Just the centre of gravity in the training data.
They aren’t paid to give preferential treatment. Although, given the missing‑in‑action business plans of the big AI labs burning through billions, I think they missed a trick there.
But the effect is the same: AI systems quietly reshape how brands are described, compared, surfaced, and positioned -one friendly conversation at a time.
So what can brand owners do about it?
They can’t opt out. They can’t ask AI systems to “stay neutral”. Neutrality isn’t a mode -it’s just another pattern in the data.
What they can do is finally accept that AI‑mediated brand visibility is now a real surface. Not a future one, -a current one. It’s displaced comparison sites, recommendations from friends and search engine results, at the point a human decision is being made.
People ask AI systems about brands every day -casually, innocently, without thinking. And the systems answer with confidence, detail, and framing that comes entirely from cultural saturation, not from the brand itself.
If you don’t know how your brand is being described, compared, surfaced, or positioned by AI, then you don’t know how your brand is being perceived.
AI Brand Visibility Audits
This is exactly why AI brand visibility audits now matter. If AI systems are already shaping how brands are described, compared, and positioned -quietly, automatically, and at scale- then someone needs to measure that behaviour with real evidence rather than assumptions or guesswork. AI doesn’t simply answer questions. It frames categories, assigns characteristics, and expresses confident preferences that come entirely from cultural saturation rather than any direct experience of the product.
If brand owners don’t know how their brand is being represented by AI, then they don’t know how their brand is being perceived. The public increasingly encounters brands through AI‑mediated explanations, comparisons, and recommendations, and those interactions are happening without the brand’s involvement, oversight, or even awareness.
AI behavioural specialists Inquisitor Labs provide human‑led AI brand visibility audits, giving companies a clear view of how their brands are being presented to the public by popular chatbots. This gives organisations the insight and evidence they need to push back against the way these models are trained, and to run targeted campaigns that offset any distortion or damage created by AI‑mediated brand representation.
AI isn’t trivial or novel any more -it’s an active player in everyday discourse shaping perceptions. Companies can no longer afford to ignore that.
For more insight visit: https://assimilatedhuman.github.io/inquisitor-labs/visibility-audit.html
