Everyone talks about "getting recommended by AI" as if AI is one thing. It is not. I put the same 40 buying questions to ChatGPT, Gemini and Perplexity on the same day, read every answer, and counted which products each one named. The three do not agree, and the size of the disagreement surprised me.
Here is what came back.
Across the 39 questions where all three answered, they named 437 distinct products between them. Of those:
Only 30% were named by all three.
47% were named by exactly one of the three.
