--- title: OpenAI says GPT 5.6 is the ‘preferred model’ for... description: OpenAI announced GPT 5.6 as the 'preferred model' for Microsoft 365 Copilot, powering apps like Word, Excel, and PowerPoint. The announcement comes amid... canonical: https://daily.dev/posts/openai-says-gpt-5-6-is-the-preferred-model-for-microsoft-copilot-amid-breakup-chatter-x2j6ohvwk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot amid breakup chatter | daily.dev og:description: OpenAI announced GPT 5.6 as the 'preferred model' for Microsoft 365 Copilot, powering apps like Word, Excel, and PowerPoint. The announcement comes amid... og:url: https://daily.dev/posts/openai-says-gpt-5-6-is-the-preferred-model-for-microsoft-copilot-amid-breakup-chatter-x2j6ohvwk og:image: https://api.daily.dev/og/posts/x2j6oHVWk.png og:image:alt: OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot amid breakup chatter 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. # OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot amid breakup chatter **[TechCrunch](https://daily.dev/sources/tc)** · 2 min read · 0 upvotes · 0 comments ## Summary OpenAI announced GPT 5.6 as the 'preferred model' for Microsoft 365 Copilot, powering apps like Word, Excel, and PowerPoint. The announcement comes amid reports that Microsoft has been increasingly relying on its own in-house MAI models to cut costs, raising questions about the two companies' partnership. OpenAI's designation doesn't fully clarify what 'preferred model' means, nor does it contradict earlier reporting that Microsoft is diversifying away from OpenAI for some workloads. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Microsoft is racing to make OpenAI optional](https://daily.dev/posts/microsoft-is-racing-to-make-openai-optional-ip9gjmzpu) · The New Stack · 10 upvotes · 11 comments - [Microsoft swaps in its own AI over OpenAI in some apps](https://daily.dev/posts/microsoft-swaps-in-its-own-ai-over-openai-in-some-apps-ru7dnzqi7) · The Next Web · 0 upvotes · 0 comments --- Tags: [#microsoft](https://daily.dev/tags/microsoft), [#llm](https://daily.dev/tags/llm), [#openai](https://daily.dev/tags/openai), [#microsoft-copilot](https://daily.dev/tags/microsoft-copilot) [View this post on daily.dev](https://daily.dev/posts/openai-says-gpt-5-6-is-the-preferred-model-for-microsoft-copilot-amid-breakup-chatter-x2j6ohvwk) ```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":"OpenAI says GPT 5.6 is the ‘preferred model’ for Microsoft Copilot amid breakup chatter","url":"https://daily.dev/posts/openai-says-gpt-5-6-is-the-preferred-model-for-microsoft-copilot-amid-breakup-chatter-x2j6ohvwk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/openai-says-gpt-5-6-is-the-preferred-model-for-microsoft-copilot-amid-breakup-chatter-x2j6ohvwk"},"datePublished":"2026-07-10T00:20:55.291Z","dateModified":"2026-07-10T00:21:16.388Z","description":"OpenAI announced GPT 5.6 as the 'preferred model' for Microsoft 365 Copilot, powering apps like Word, Excel, and PowerPoint. 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