--- title: 987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai,... description: Multiple AI models, including GPT-4, Claude-2, and Perplexity.ai, incorrectly answered a three-digit multiplication question. The correct answer is 987 * 897 =... canonical: https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: 987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai, they all got wrong and Hallucination! | daily.dev og:description: Multiple AI models, including GPT-4, Claude-2, and Perplexity.ai, incorrectly answered a three-digit multiplication question. The correct answer is 987 * 897 =... og:url: https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6 og:image: https://api.daily.dev/og/posts/W8D6Ow5Y6.png og:image:alt: 987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai, they all got wrong and Hallucination! 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. # 987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai, they all got wrong and Hallucination! **[GoPenAI](https://daily.dev/sources/gopenai)** · 1 min read · 1 upvotes · 2 comments ## Summary Multiple AI models, including GPT-4, Claude-2, and Perplexity.ai, incorrectly answered a three-digit multiplication question. The correct answer is 987 * 897 = 885339. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@coin\_spark** · 0 upvotes > Wow, i am really curious of why the AI cant do a simple math calculation. I have asked it, here is the response from GPT-4: > > As an AI, I don't "think" or process errors the same way humans do. The error in the multiplication was not due to a logical thought process, but rather it was a mistake in the output I provided. My responses are generated based on patterns in data and sometimes, despite the high accuracy of the model, incorrect information can be given due to a variety of factors including how the input question is interpreted or a rare lapse in the model's reliability. > > In this case,... **@alwaisy** · 0 upvotes >  > > From calculator is 885339 --- Tags: [#ai](https://daily.dev/tags/ai), [#machine-learning](https://daily.dev/tags/machine-learning), [#math](https://daily.dev/tags/math), [#llm](https://daily.dev/tags/llm), [#gpt](https://daily.dev/tags/gpt) [View this post on daily.dev](https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6) ```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":"987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai, they all got wrong and Hallucination!","url":"https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6"},"datePublished":"2023-10-25T12:01:26.671Z","dateModified":"2023-10-25T12:00:58.911Z","description":"Multiple AI models, including GPT-4, Claude-2, and Perplexity.ai, incorrectly answered a three-digit multiplication question. The correct answer is 987 * 897 =...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f7823de321bb3f08fb471449724ed059?_a=AQAEufR","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/f7823de321bb3f08fb471449724ed059?_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":2,"discussionUrl":"https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":2}],"keywords":"ai,machine-learning,math,llm,gpt","timeRequired":"PT1M"} {"@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":"987 * 897 = ? Ask GPT-4, Claude-2, and Perplexity.ai, they all got wrong and Hallucination!"}]} {"@context":"https://schema.org","@type":"WebPage","@id":"https://daily.dev/posts/987-897-ask-gpt-4-claude-2-and-perplexity-ai-they-all-got-wrong-and-hallucination--w8d6ow5y6","comment":[{"@type":"Comment","text":"Wow, i am really curious of why the AI cant do a simple math calculation. I have asked it, here is the response from GPT-4:\nAs an AI, I don’t “think” or process errors the same way humans do. The error in the multiplication was not due to a logical thought process, but rather it was a mistake in the output I provided. My responses are generated based on patterns in data and sometimes, despite the high accuracy of the model, incorrect information can be given due to a variety of factors including how the input question is interpreted or a rare lapse in the model’s reliability.\nIn this case, it seems there was just a simple error in the output provided, not a logical process that led to the incorrect calculation. I strive to provide accurate information and I apologize for the mistake. Your correction is noted, and the accurate product of 987 multiplied by 897 is indeed 885,339.","datePublished":"2023-11-09T11:14:10.324Z","url":"https://daily.dev/posts/W8D6Ow5Y6#c-RZEUFluDa","author":{"@type":"Person","name":"Alessio Cenizzi","url":"https://daily.dev/coin_spark","image":"https://avatars.githubusercontent.com/u/79489078?v=4"}},{"@type":"Comment","text":"From calculator is 885339","datePublished":"2023-10-26T18:03:37.647Z","dateModified":"2023-10-26T18:05:10.061Z","url":"https://daily.dev/posts/W8D6Ow5Y6#c-O1Skbokck","author":{"@type":"Person","name":"Awais Alwaisy","url":"https://daily.dev/alwaisy","image":"https://avatars.githubusercontent.com/u/102944304?v=4"}}]} ```