--- title: What’s Perplexity in AI? | daily.dev description: Perplexity measures how well an AI can predict the next word. Lower perplexity indicates better AI models. Practical calculation involves probability... canonical: https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What’s Perplexity in AI? | daily.dev og:description: Perplexity measures how well an AI can predict the next word. Lower perplexity indicates better AI models. Practical calculation involves probability... og:url: https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1 og:image: https://api.daily.dev/og/posts/EUnu1xUM1.png og:image:alt: What’s Perplexity in AI? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # What’s Perplexity in AI? **[GoPenAI](https://daily.dev/sources/gopenai)** · 2 min read · 2 upvotes · 0 comments ## Summary Perplexity measures how well an AI can predict the next word. Lower perplexity indicates better AI models. Practical calculation involves probability calculation, logarithm, and average log probability. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#ai](https://daily.dev/tags/ai), [#llama-cpp](https://daily.dev/tags/llama-cpp), [#llm](https://daily.dev/tags/llm), [#perplexity](https://daily.dev/tags/perplexity) [View this post on daily.dev](https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"What’s Perplexity in AI?","url":"https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1"},"datePublished":"2024-01-23T12:21:53.490Z","dateModified":"2026-05-14T02:14:55.968Z","description":"Perplexity measures how well an AI can predict the next word. Lower perplexity indicates better AI models. Practical calculation involves probability...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fd613e8aab90dcdc53e04f6ea8b211b9?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/fd613e8aab90dcdc53e04f6ea8b211b9?_a=AQAEufR","isAccessibleForFree":true,"articleSection":"GoPenAI","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"GoPenAI","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/f34dfd0c312c4a59b897eb64ad28d895","url":"https://daily.dev/sources/gopenai"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/what-s-perplexity-in-ai--eunu1xum1","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"ai,llama-cpp,llm,perplexity","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"GoPenAI","item":"https://daily.dev/sources/gopenai"},{"@type":"ListItem","position":3,"name":"What’s Perplexity in AI?"}]} ```