Top JavaScript/TypeScript Gen AI Frameworks for 2026: A Hands-On Comparison" description

Introduction The Generative AI tooling ecosystem has exploded over the past two years. What started as a handful of Python libraries has grown into a rich, opinionated landscape of frameworks spanning multiple languages, deployment targets, and philosophy bets. As a developer who has shipped production applications using all five of the frameworks covered in this article, Genkit , Vercel AI SDK , Mastra , LangChain , and Google ADK , I want to offer a practical, hands-on view of where each one e