LangChain4j

LangChain4j is s Java library that provides a uniform interface to multiple language models.

See https://docs.langchain4j.dev/

The Arc Framework provides a wrapper for the LangChain4j ChatLanguageModel interface, which allows us to use any LangChain4j client within our Arc Agents.

Supported LangChain4j clients:

Model	Package	Supported Version
Amazon Bedrock	dev.langchain4j:langchain4j-bedrock	0.36.2
Google Gemini	dev.langchain4j:langchain4j-google-ai-gemini	0.36.2
Ollama.	dev.langchain4j:langchain4j-ollama	0.36.2
Groq	dev.langchain4j:langchain4j-open-ai	0.36.2

Check out the following example on how to set up clients:

• https://github.com/eclipse-lmos/arc/tree/main/arc-runner/src/main/kotlin/server/ChatCompleterProvider.kt