A language-model metric that became a company.
Which meaning of Perplexity is the original, and which one is the duplicate riding on its name? Perplexity (information theory) came first (c. 1977). Perplexity AI arrived in 2022. The data below shows which one owns the word now.
Wikipedia pageviews since 2015
Perplexity (information theory)Perplexity AI
English Wikipedia pageviews since July 2015 load here.
Duplicate's share of attention
Green line = duplicate's % · above 60 it owns the word · below 40 the original does
The case for each meaning
Sourced definitions, usage stats and quotes
Original · c. 1977
Perplexity (information theory)
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Duplicate · c. 2022
Perplexity AI
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More duplicated terms
AI & machine learning
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