Build an AI Changelog Generator SaaS with Next.js & GPT Writing changelogs is tedious. Developers spend hours summarizing git commits into user-friendly release notes that nobody enjoys writing. In this tutorial, you'll build a SaaS application that automatically transforms raw git commits into polished, categorized changelogs using Next.js 14 and the OpenAI GPT API . By the end, you'll have a deployable product that accepts a GitHub repository URL, fetches recent commits, and generates beautiful changelogs with a single click. This is a real-world project you can monetize or add to your portfolio.…