Crystal Pepsi vs Diet Pepsi: what AI actually recommends
The same buying questions, every week, to ChatGPT, Claude, Gemini, and Perplexity: the record of which of these two they name first. No opinions, no scores we invented: what the models said.
AI currently favors Crystal Pepsi. Ahead in 1 of 1 shared category on consensus rank.
That is this week’s close, not a verdict for all time. The model-by-model board below shows where they agree, where they split, and how both brands moved.
On this week's close, Crystal Pepsi leads 1 and Diet Pepsi leads 0 across the 1 category they both appear in.
Beyond this pairing, Crystal Pepsi is ranked in 1 category; Diet Pepsi is ranked in 1 category. The board below is the shared slice — where the four models place these two side by side.
The record, category by category.
Consensus rank · weekly close- #11Crystal PepsiNew entry this weekspread 10GPT#1Claude#10Gemini#8PPLX#11
- #13Diet PepsiNew entry this weekspread 10GPT#1Claude#6Gemini#10PPLX#11
On consensus rank, Crystal Pepsi leads here, #11 to Diet Pepsi's #13 — 14 to 11 on the 0–100 score. The models split: Claude rank Diet Pepsi ahead, while Gemini keep Crystal Pepsi in front. Crystal Pepsi is new to the board this week.
Where the models split.
Across all 1 category these two share, at least one model breaks from the others every time — there is no category where the four line up cleanly.
Model by model, Gemini is Crystal Pepsi's strongest backer, placing it ahead in 1 of the 1; Claude leans the other way, favoring Diet Pepsi in 1.
- ChatGPTsplit 0-0
- Claudefavors Diet Pepsi 1-0
- Geminifavors Crystal Pepsi 1-0
- Perplexitysplit 0-0