ADK for Java opening up to third-party language models via LangChain4j integration- Google Developers Blog

This post introduces the integration of LangChain4j into the Agent Development Kit (ADK) for Java, enabling ADK agents to leverage a wide array of third-party and local LLMs. It details how to configure agents to use models from providers like OpenAI, Anthropic, Mistral, and local models via Ollama and Docker Model Runner. Specific examples demonstrate running Gemma 3 with Docker Model Runner and Qwen 3 with Ollama. The release also includes instance-based FunctionTools, improved async support for FunctionTools, chained callbacks for agent lifecycle events, an InMemoryMemoryService, and VertexAiRagRetrieval.