🔴 Lets build an AI Newsletter SaaS with Next.js 16! (MongoDB, Prisma, OpenAI, AI SDK, Clerk, Stripe)
Join me as I show you how to build an AI Powered Newsletter SaaS App from scratch with the latest Next.js 16 - This comprehensive tutorial covers everything you need to create an AI Newsletter SaaS App with Subscriptions & Payments! 🎯 What You'll Learn 🚀 Modern Tech Stack (Using the NEWEST Releases!): - Next.js 16 - JUST RELEASED! React 19 with App Router, Turbopack, and Server Components - OpenAI Integration - GPT-4o by default (fully customizable: gpt-4o, gpt-4o-mini, gpt-3.5-turbo) - MongoDB + Prisma - NoSQL database with type-safe ORM and auto-generated TypeScript types - Clerk - Complete authentication + billing integration with plan-based feature gating - Tailwind CSS v4 - Modern utility-first styling - RSS Parser - Automated content aggregation from multiple feed sources - Server-Sent Events (SSE) - Real-time streaming with progressive updates 💻 Core Features: - AI Newsletter Generation - Streaming AI responses with customizable models (GPT-4o, GPT-4o-mini, GPT-3.5-turbo) - RSS Feed Aggregation - Unlimited sources with tier-based limits (Starter: 3 feeds, Pro: unlimited) - Smart 3-Hour Caching - Cross-user cache reduces API calls by 80-90% - Article Deduplication - GUID-based storage prevents duplicates across feeds with sourceFeedIds tracking - Complete Newsletter Output - 5 title options, 5 subject lines, full body, top 5 announcements, insights - User Settings System - Custom tone, brand voice, target audience, disclaimers, sender info - Newsletter History - Pro-only feature: save and access all past newsletters - Date Range Selector - Weekly, monthly, or custom date ranges for content curation - Real-Time Streaming - Watch newsletter generation live with progressive SSE updates - Plan-Based Feature Gating - Clerk integration with Starter and Pro tier restrictions 🛠️ Advanced Concepts: - Intelligent Cross-User Caching - Shared cache benefits all users (MongoDB lastFetched optimization) - Article Deduplication Architecture - O(1) lookups with unique GUID indexing + sourceFeedIds arrays