{"product_id":"generate-social-media-captions-with-openai-gpt-5-in-n8n","title":"Generate Social Media Captions with OpenAI GPT-5 in n8n","description":"\u003ch3\u003eTurn one idea into ready-to-post captions for every major social platform—automatically\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow uses OpenAI GPT-5-mini to generate platform-specific social media captions from a single topic, then parses and validates each result for character limits and hashtag rules across Instagram, TikTok, YouTube Shorts, and Threads—returning a structured content report you can use immediately.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eManual run with a topic:\u003c\/strong\u003e Start the workflow when you manually execute it, then enter your content topic.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eApply reusable content settings:\u003c\/strong\u003e Configure tone, target audience, language, brand voice, call to action, and whether you want emoji\/hashtag preferences included.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eGenerate captions via OpenAI:\u003c\/strong\u003e Send the topic and settings to OpenAI to produce distinct captions for:\u003c\/p\u003e\u003c\/li\u003e\n  \u003cul\u003e\n    \u003cli\u003eInstagram\u003c\/li\u003e\n    \u003cli\u003eTikTok\u003c\/li\u003e\n    \u003cli\u003eYouTube Shorts (title and description)\u003c\/li\u003e\n    \u003cli\u003eThreads\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eParse and validate output:\u003c\/strong\u003e Break the single JSON response into separate platform fields, then verify presence, character counts, and that hashtag usage matches your configured rules.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eReturn a structured content report:\u003c\/strong\u003e Includes generated content, the settings used, character counts, hashtag counts, and validation status.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eSaaS operators\u003c\/strong\u003e quickly draft consistent posts for product updates, features, or launch announcements.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eAutomation engineers\u003c\/strong\u003e build a reliable “caption factory” in n8n that enforces platform constraints before content goes live.\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eCreators and marketing teams\u003c\/strong\u003e reuse the same topic and brand voice to produce variations for Instagram, TikTok, YouTube Shorts, and Threads.\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eManual Trigger\u003c\/strong\u003e to run on demand\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003e\u003cstrong\u003eOpenAI (n8n-nodes-langchain-open ai)\u003c\/strong\u003e using \u003cstrong\u003eGPT-5-mini\u003c\/strong\u003e via your OpenAI API credential\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003eNodes used include \u003cstrong\u003eset\u003c\/strong\u003e, \u003cstrong\u003ecode\u003c\/strong\u003e, and a \u003cstrong\u003esticky note\u003c\/strong\u003e for workflow organization\u003c\/p\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cp\u003eGenerates a single JSON response, then parses, counts characters\/hashtags, and validates limits and hashtag rules\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eGet started:\u003c\/strong\u003e Add your OpenAI credential in the “Generate Social Captions” node (ensure GPT-5-mini is available), replace the placeholder topic, then tune tone, audience, language, brand voice, and CTA to match your content strategy.\u003c\/p\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":45985519665331,"sku":"N8N-19393","price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/Yf35NM6NuSNeEFaVNydz6_S2x0z6On.png?v=1788945291","url":"https:\/\/buyflowscripts.com\/products\/generate-social-media-captions-with-openai-gpt-5-in-n8n","provider":"N8N Commerce","version":"1.0","type":"link"}