Auto-Generate & Publish SEO Blog Posts to WordPress with OpenRouter & Runware

Blog posts at near-zero cost. This n8n workflow, BlogBlitz: Runware Edition, automates SEO-optimized WordPress publishing with entirely free OpenRouter AI models for text and metadata, plus ultra-low-cost Runware AI for realistic featured images (as low as $0.0016 per image). It runs every 3 hours or on demand via Telegram. Each run generates 1,500–3,500-word articles on trending topics in Technology, AI, Tech Facts, History, or Tips, all with catchy titles, slugs, meta descriptions, and visuals. Last updated: September 2026. --- Why This Is So Cost-Efficient - Free metadata + article generation (OpenRouter free-tier models) - Only cost is image generation via Runware: - Image generation: ~$0.0016/image (the cheapest model could be $0,00065) This is ideal for scale: dozens of high-quality blog posts with minimal expense. --- Who Is This For? - Bloggers who want high-quality content without writing - SEO marketers seeking fresh, long-form articles - WordPress site owners automating publishing workflows - Growth hackers targeting high-volume content generation --- What Problem Does It Solve? Creating SEO-rich blog content is time-consuming, expensive, and requires expertise. BlogBlitz removes that friction with free models (OpenRouter) for text and metadata, so the workflow is nearly free to operate. The only cost is the featured image (~$0.0016/image). --- What This Workflow Does Triggers: Every 3 hours (or via Telegram command: generate) Generates Metadata: Title, slug, category, focus keyphrase, and meta description using OpenRouter Writes SEO Article: 1,500–3,500 words with headings, H2/H3s, CTA, and outbound links Creates Image: Generates realistic 1024×1024 blog image with Runware AI Publishes to WordPress: Auto-publishes with category ID, featured image, and Yoast SEO fields Notifies: Sends publish link to Discord and Telegram (optional) --- Setup Instructions - Import .json into n8n - Add credentials: - OpenRouter API (free LLMs like LLaMA-3, Nemotron, docs) - Runware API key (get it here) - (Optional) Telegram Bot + Discord Webhook - Test by sending the word generate via Telegram --- Pre-Requirements - Self-hosted or cloud-based n8n instance - WordPress with category IDs configured: - Technology → 3 - AI → 4 - Tech Fact → 7 - Tech History → 8 - Tech Tips → 9 - OpenRouter API Key (free) - Runware API Key (for images) - WordPress user ID (admin, default is 1) - Telegram bot (optional) - Discord webhook (optional) --- Customize It Further - Change writing tone or prompt in Compose SEO Article Content node - Configure the category - Swap free LLMs (Claude, Gemini, GPT, etc.) in OpenRouter settings - Adjust schedule (every 6h, daily, etc.) - Extend alerts (email, Slack, Notion) --- Nodes Used - Schedule Trigger - Telegram Trigger - @n8n/n8n-nodes-langchain (OpenRouter) - WordPress Node - HTTP Request (Runware API) - Discord Webhook - Sticky Notes (Documentation inside canvas) --- Quick Answers What does it actually cost to run? Text and metadata are free via OpenRouter free-tier models. You only pay ~$0.0016 per featured image. How often does it publish? Every 3 hours by default, or manually with generate on Telegram. How long are the articles? 1,500–3,500 words with headings, CTA, and outbound links. Support Created by: khmuhtadin Tag: wordpress, blog, seo, openai, telegram Category: AI Automation, Blogging Need a custom? contact me on LinkedIn or Web Additional info Built with n8n. Need an assessment on your business? Feel free to reach out at https://khmuhtadin.com/consultation/