Top Gen AI Frameworks for Java in 2026: A Hands-On Comparison

A 2026 comparison reviews four active Java generative AI frameworks: Genkit Java, Spring AI, LangChain4j, and Google ADK Java.

The piece explains how Genkit Java is designed and where it sits relative to the others for building LLM applications.

The frameworks differ in architecture, integration style, and developer experience, which matters for production AI systems.

Java teams now have more mature options for tasks like typed flows, agents, RAG, and MCP-based integrations.