tessl/maven-dev-langchain4j--langchain4j-vertex-ai

LangChain4j integration for Google Vertex AI models including chat, language, embedding, image, and scoring capabilities

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LangChain4j Vertex AI Integration

Name: tessl/maven-dev-langchain4j--langchain4j-vertex-ai
Author: tessl

LangChain4j integration for Google Vertex AI. Provides Java APIs for chat, language, embedding, image, and scoring models.

Installation

<dependency>
    <groupId>dev.langchain4j</groupId>
    <artifactId>langchain4j-vertex-ai</artifactId>
    <version>1.11.0-beta19</version>
</dependency>

Quick Start

VertexAiChatModel model = VertexAiChatModel.builder()
    .endpoint("https://us-central1-aiplatform.googleapis.com/v1/")
    .project("your-project-id")
    .location("us-central1")
    .publisher("google")
    .modelName("chat-bison@001")
    .build();

Models

Chat Model - Conversational AI (chat-bison, gemini)
Language Model - Text generation (text-bison)
Embedding Model - Text embeddings (text-embedding-004)
Image Model - Image generation (imagegeneration@006)
Scoring Model - Text ranking (semantic-ranker-512)

Setup & Reference

Installation | Authentication | Configuration
Quick Reference - All models at a glance
SPI Factories - Dependency injection integration