--- title: IBM says AI is insane in the mainframe as z17 sales surge description: IBM reported strong Q4 2025 results with mainframe revenue reaching a 20-year high, driven by the z17 series launch. The company accumulated $12.5 billion in... canonical: https://daily.dev/posts/ibm-says-ai-is-insane-in-the-mainframe-as-z17-sales-surge-flvanbvn4 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: IBM says AI is insane in the mainframe as z17 sales surge | daily.dev og:description: IBM reported strong Q4 2025 results with mainframe revenue reaching a 20-year high, driven by the z17 series launch. The company accumulated $12.5 billion in... og:url: https://daily.dev/posts/ibm-says-ai-is-insane-in-the-mainframe-as-z17-sales-surge-flvanbvn4 og:image: https://api.daily.dev/og/posts/fLvANbvn4.png og:image:alt: IBM says AI is insane in the mainframe as z17 sales surge 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. # IBM says AI is insane in the mainframe as z17 sales surge **[The Register](https://daily.dev/sources/theregister)** · 4 min read · 0 upvotes · 0 comments ## Summary IBM reported strong Q4 2025 results with mainframe revenue reaching a 20-year high, driven by the z17 series launch. The company accumulated $12.5 billion in GenAI business and achieved $4.5 billion in annual productivity savings. IBM is positioning AI-powered tools like Watson Code Assistant to modernize COBOL codebases by refactoring to Java, while emphasizing mainframes as cost-effective platforms for AI workloads with millisecond latency when processing transactions inline. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [AI Is Slowing Mainframe Sales. But Can the World Really Do Without Them?](https://daily.dev/posts/ai-is-slowing-mainframe-sales-but-can-the-world-really-do-without-them--jblwtwnhi) · Codemotion · 0 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#infrastructure](https://daily.dev/tags/infrastructure), [#ibm](https://daily.dev/tags/ibm) [View this post on daily.dev](https://daily.dev/posts/ibm-says-ai-is-insane-in-the-mainframe-as-z17-sales-surge-flvanbvn4) ```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":"IBM says AI is insane in the mainframe as z17 sales surge","url":"https://daily.dev/posts/ibm-says-ai-is-insane-in-the-mainframe-as-z17-sales-surge-flvanbvn4","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ibm-says-ai-is-insane-in-the-mainframe-as-z17-sales-surge-flvanbvn4"},"datePublished":"2026-01-29T15:48:41.745Z","dateModified":"2026-01-29T15:49:42.485Z","description":"IBM reported strong Q4 2025 results with mainframe revenue reaching a 20-year high, driven by the z17 series launch. 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