--- title: Arize launches Phoenix, an open-source library to... description: Arize AI has launched Phoenix, an open-source library that monitors large language models (LLMs) for hallucinations. Phoenix helps visualize complex LLM... canonical: https://daily.dev/posts/arize-launches-phoenix-an-open-source-library-to-monitor-llm-hallucinations-vq8uvyl7i twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Arize launches Phoenix, an open-source library to monitor LLM hallucinations | daily.dev og:description: Arize AI has launched Phoenix, an open-source library that monitors large language models (LLMs) for hallucinations. Phoenix helps visualize complex LLM... og:url: https://daily.dev/posts/arize-launches-phoenix-an-open-source-library-to-monitor-llm-hallucinations-vq8uvyl7i og:image: https://api.daily.dev/og/posts/vq8UvYL7i.png og:image:alt: Arize launches Phoenix, an open-source library to monitor LLM hallucinations 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. # Arize launches Phoenix, an open-source library to monitor LLM hallucinations **[Venture Beat](https://daily.dev/sources/venturebeat)** · 4 min read · 2 upvotes · 0 comments ## Summary Arize AI has launched Phoenix, an open-source library that monitors large language models (LLMs) for hallucinations. Phoenix helps visualize complex LLM decision-making, flagging when models fail or give poor responses. It also assists with troubleshooting and fine-tuning LLM models. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#data-science](https://daily.dev/tags/data-science), [#elixir](https://daily.dev/tags/elixir), [#llm-observability](https://daily.dev/tags/llm-observability), [#machine-learning](https://daily.dev/tags/machine-learning) [View this post on daily.dev](https://daily.dev/posts/arize-launches-phoenix-an-open-source-library-to-monitor-llm-hallucinations-vq8uvyl7i) ```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":"Arize launches Phoenix, an open-source library to monitor LLM hallucinations","url":"https://daily.dev/posts/arize-launches-phoenix-an-open-source-library-to-monitor-llm-hallucinations-vq8uvyl7i","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/arize-launches-phoenix-an-open-source-library-to-monitor-llm-hallucinations-vq8uvyl7i"},"datePublished":"2023-04-25T15:46:16.496Z","dateModified":"2026-07-16T02:12:40.490Z","description":"Arize AI has launched Phoenix, an open-source library that monitors large language models (LLMs) for hallucinations. 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